Applied Optoelectronics (AAOI)
Applied Optoelectronics on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, financials, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as semiconductors & related devices.
16.3M
Short interest
settlement 2026-10-15
1.3
Days to cover
-0.7 days vs prior
61.6%
Short share of volume
2026-10-28
13,500
Fails to deliver
settlement 2026-09-29
Thu 5 Nov
Next earnings
estimated date
-$7.2M
Insider flow, 90 days
0 buys, 7 sells
As of 2026-10-28.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 15 October 2026, short interest in AAOI is 16,296,183 shares, up 3,989,037 shares over the last month. Over the last 48 readings it ranged from 8,415,378 shares (31 December 2024) to 16,296,183 shares (15 October 2026). The latest reading sits at the top of that range. At the reported average volume of 12.7M shares a day that is 1.3 days to cover.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 16,296,183 | +17.5% | 12,706,181 | 1.28 |
| 2026-09-30 | 13,870,138 | +12.7% | 7,077,084 | 1.96 |
| 2026-09-15 | 12,307,146 | +1.8% | 6,232,395 | 1.97 |
| 2026-08-31 | 12,086,618 | +16.0% | 9,129,360 | 1.32 |
| 2026-08-14 | 10,421,985 | -0.1% | 15,117,634 | 1.00 |
| 2026-07-31 | 10,434,298 | +5.0% | 8,703,601 | 1.20 |
| 2026-07-15 | 9,936,995 | -7.6% | 8,725,213 | 1.14 |
| 2026-06-30 | 10,756,408 | +5.1% | 12,803,113 | 1.00 |
| 2026-06-15 | 10,232,545 | +2.0% | 15,531,485 | 1.00 |
| 2026-05-29 | 10,036,132 | +7.5% | 10,443,084 | 1.00 |
| 2026-05-15 | 9,333,296 | -7.9% | 13,209,246 | 1.00 |
| 2026-04-30 | 10,132,671 | +0.0% | 9,249,383 | 1.10 |
| 2026-04-15 | 10,132,357 | +10.4% | 14,461,352 | 1.00 |
| 2026-03-31 | 9,181,438 | -10.9% | 12,156,563 | 1.00 |
| 2026-03-13 | 10,301,269 | -2.5% | 14,447,345 | 1.00 |
| 2026-02-27 | 10,560,298 | -0.6% | 6,230,845 | 1.69 |
| 2026-02-13 | 10,621,763 | -8.2% | 5,093,761 | 2.09 |
| 2026-01-30 | 11,565,357 | -3.8% | 5,648,689 | 2.05 |
| 2026-01-15 | 12,019,130 | -1.8% | 4,833,009 | 2.49 |
| 2025-12-31 | 12,234,802 | -3.7% | 4,562,268 | 2.68 |
| 2025-12-15 | 12,707,289 | -11.7% | 5,182,634 | 2.45 |
| 2025-11-28 | 14,389,524 | +11.8% | 4,558,907 | 3.16 |
| 2025-11-14 | 12,875,872 | +5.3% | 6,786,438 | 1.90 |
| 2025-10-31 | 12,222,308 | -6.3% | 4,784,448 | 2.55 |
| 2025-10-15 | 13,051,361 | -3.5% | 5,614,237 | 2.32 |
| 2025-09-30 | 13,521,211 | +10.8% | 4,531,969 | 2.98 |
| 2025-09-15 | 12,200,411 | -5.9% | 5,101,161 | 2.39 |
| 2025-08-29 | 12,969,044 | +8.7% | 5,412,166 | 2.40 |
| 2025-08-15 | 11,936,664 | +0.9% | 5,673,028 | 2.10 |
| 2025-07-31 | 11,827,489 | +0.1% | 4,205,903 | 2.81 |
| 2025-07-15 | 11,817,834 | -5.0% | 4,771,061 | 2.48 |
| 2025-06-30 | 12,437,052 | +3.5% | 7,014,723 | 1.77 |
| 2025-06-13 | 12,013,084 | +10.0% | 4,501,869 | 2.67 |
| 2025-05-30 | 10,918,833 | +3.3% | 2,853,657 | 3.83 |
| 2025-05-15 | 10,567,409 | -1.0% | 4,807,760 | 2.20 |
| 2025-04-30 | 10,676,523 | +11.3% | 2,658,840 | 4.02 |
| 2025-04-15 | 9,592,476 | +1.1% | 4,621,498 | 2.08 |
| 2025-03-31 | 9,487,486 | -2.5% | 3,592,276 | 2.64 |
| 2025-03-14 | 9,732,703 | +1.1% | 6,351,346 | 1.53 |
| 2025-02-28 | 9,623,902 | +10.3% | 5,861,405 | 1.64 |
| 2025-02-14 | 8,722,194 | -8.7% | 2,703,768 | 3.23 |
| 2025-01-31 | 9,550,966 | +12.9% | 3,147,312 | 3.03 |
| 2025-01-15 | 8,458,909 | +0.5% | 2,674,706 | 3.16 |
| 2024-12-31 | 8,415,378 | -12.0% | 2,915,244 | 2.89 |
| 2024-12-13 | 9,562,174 | +3.1% | 4,642,077 | 2.06 |
| 2024-11-29 | 9,273,849 | -5.7% | 4,030,267 | 2.30 |
| 2024-11-15 | 9,831,506 | -9.1% | 5,272,350 | 1.86 |
| 2024-10-31 | 10,813,841 | -1.0% | 2,360,157 | 4.58 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 28 October 2026, the short share of AAOI volume is 61.6%, up 7.1 points over the last five sessions. Over the last 30 readings it ranged from 47.1% (23 September 2026) to 62.8% (28 September 2026). The latest reading sits at the top of that range. The latest reading is 5.0 points above the 30-session average of 56.6%, on 4.3M shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-10-28 | 2.6M | 4.3M | 61.6% | 7,515 |
| 2026-10-27 | 2.5M | 4.3M | 57.7% | 1,903 |
| 2026-10-26 | 3.0M | 5.2M | 56.4% | 3,718 |
| 2026-10-23 | 2.4M | 3.9M | 61.0% | 242,328 |
| 2026-10-22 | 3.1M | 6.0M | 50.8% | 246,357 |
| 2026-10-21 | 1.8M | 3.4M | 54.5% | 1,654 |
| 2026-10-20 | 2.1M | 3.9M | 53.7% | 5,440 |
| 2026-10-19 | 2.4M | 4.5M | 53.3% | 12,004 |
| 2026-10-16 | 3.3M | 5.8M | 56.1% | 335,353 |
| 2026-10-15 | 4.5M | 7.4M | 60.2% | 457,987 |
| 2026-10-14 | 3.1M | 6.1M | 50.2% | 172,408 |
| 2026-10-13 | 2.3M | 4.5M | 50.4% | 323 |
| 2026-10-12 | 2.6M | 4.7M | 55.6% | 7,840 |
| 2026-10-09 | 3.4M | 6.6M | 50.7% | 441,647 |
| 2026-10-08 | 4.5M | 8.4M | 53.0% | 221,387 |
| 2026-10-07 | 2.7M | 4.5M | 60.2% | 3,576 |
| 2026-10-06 | 3.3M | 5.4M | 61.7% | 6,819 |
| 2026-10-05 | 2.5M | 4.1M | 60.7% | 5,032 |
| 2026-10-02 | 2.9M | 4.7M | 61.4% | 6,212 |
| 2026-10-01 | 2.4M | 4.5M | 53.3% | 8,227 |
| 2026-09-30 | 1.4M | 2.4M | 59.7% | 1,883 |
| 2026-09-29 | 2.0M | 3.3M | 62.1% | 2,828 |
| 2026-09-28 | 2.1M | 3.3M | 62.8% | 3,231 |
| 2026-09-25 | 1.3M | 2.3M | 58.5% | 35 |
| 2026-09-24 | 1.3M | 2.2M | 58.6% | 503 |
| 2026-09-23 | 1.3M | 2.8M | 47.1% | 470 |
| 2026-09-22 | 2.0M | 3.2M | 61.9% | 1,047 |
| 2026-09-21 | 1.8M | 3.2M | 54.6% | 3,597 |
| 2026-09-18 | 1.6M | 2.9M | 55.0% | 1,281 |
| 2026-09-17 | 1.7M | 3.0M | 55.3% | 10,242 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 29 September 2026, the fails-to-deliver balance in AAOI is 13,500 shares, up 12,494 shares over the last settlement date. Over the last 30 readings it ranged from 10 shares (16 September 2026) to 379,772 shares (10 September 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-09-29 | 13,500 | $96.82 | $1.3M |
| 2026-09-28 | 1,006 | $101.40 | $102K |
| 2026-09-25 | 47,689 | $101.03 | $4.8M |
| 2026-09-21 | 351,401 | $105.17 | $37.0M |
| 2026-09-18 | 9,069 | $98.06 | $889K |
| 2026-09-17 | 329 | $96.74 | $32K |
| 2026-09-16 | 10 | $95.29 | $953 |
| 2026-09-14 | 708 | $105.36 | $75K |
| 2026-09-10 | 379,772 | $107.93 | $41.0M |
| 2026-09-09 | 96,534 | $111.55 | $10.8M |
| 2026-08-28 | 572 | $113.28 | $65K |
| 2026-08-24 | 261,705 | $124.82 | $32.7M |
| 2026-08-20 | 6,983 | $122.19 | $853K |
| 2026-08-17 | 1,100 | $150.28 | $165K |
| 2026-08-13 | 93,371 | $138.08 | $12.9M |
| 2026-08-12 | 63,053 | $134.33 | $8.5M |
| 2026-08-10 | 14,829 | $135.63 | $2.0M |
| 2026-08-07 | 25,740 | $124.22 | $3.2M |
| 2026-08-06 | 106,356 | $128.56 | $13.7M |
| 2026-08-03 | 118 | $94.32 | $11K |
| 2026-07-31 | 1,254 | $90.11 | $113K |
| 2026-07-28 | 256 | $97.82 | $25K |
| 2026-07-27 | 68,120 | $100.15 | $6.8M |
| 2026-07-24 | 394 | $112.02 | $44K |
| 2026-07-23 | 940 | $110.52 | $104K |
| 2026-07-22 | 1,136 | $119.26 | $135K |
| 2026-07-20 | 821 | $102.41 | $84K |
| 2026-07-17 | 1,773 | $100.24 | $178K |
| 2026-07-14 | 84,982 | $111.88 | $9.5M |
| 2026-07-10 | 2,132 | $122.21 | $261K |
Insider trades
SEC Form 4, newest first. JSONInsiders at AAOI reported 7 open-market sells worth $7.2M in the last 90 days and no open-market buys. Latest filing: Chang Hung-Lun (Fred) (*** See Remarks) on 2026-10-22.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-10-22 | Chang Hung-Lun (Fred) | *** See Remarks | Tax withholding | 677 | $77.32 | $52K | 244K |
| 2026-10-22 | Chang Hung-Lun (Fred) | *** See Remarks | Tax withholding | 850 | $77.32 | $66K | 245K |
| 2026-10-22 | Chang Hung-Lun (Fred) | *** See Remarks | Tax withholding | 674 | $77.32 | $52K | 246K |
| 2026-10-22 | Chang Hung-Lun (Fred) | *** See Remarks | Tax withholding | 3K | $77.32 | $227K | 246K |
| 2026-10-22 | Murry Stefan J. | Chief Financial Officer | Tax withholding | 846 | $77.32 | $65K | 357K |
| 2026-10-22 | Murry Stefan J. | Chief Financial Officer | Tax withholding | 1K | $77.32 | $84K | 358K |
| 2026-10-22 | Murry Stefan J. | Chief Financial Officer | Tax withholding | 746 | $77.32 | $58K | 359K |
| 2026-10-22 | Murry Stefan J. | Chief Financial Officer | Tax withholding | 3K | $77.32 | $253K | 360K |
| 2026-10-22 | Kuo David C | *** See Remarks | Tax withholding | 447 | $77.32 | $35K | 142K |
| 2026-10-22 | Kuo David C | *** See Remarks | Tax withholding | 567 | $77.32 | $44K | 143K |
| 2026-10-22 | Kuo David C | *** See Remarks | Tax withholding | 519 | $77.32 | $40K | 143K |
| 2026-10-22 | Kuo David C | *** See Remarks | Tax withholding | 2K | $77.32 | $159K | 144K |
| 2026-10-22 | Yeh Shu-Hua (Joshua) | *** See Remarks | Tax withholding | 323 | $77.32 | $25K | 369K |
| 2026-10-22 | Yeh Shu-Hua (Joshua) | *** See Remarks | Tax withholding | 406 | $77.32 | $31K | 370K |
| 2026-10-22 | Yeh Shu-Hua (Joshua) | *** See Remarks | Tax withholding | 287 | $77.32 | $22K | 370K |
| 2026-10-22 | Yeh Shu-Hua (Joshua) | *** See Remarks | Tax withholding | 1K | $77.32 | $93K | 370K |
| 2026-10-22 | Lin Chih-Hsiang (Thompson) | President and CEO | Tax withholding | 2K | $77.32 | $167K | 1.3M |
| 2026-10-22 | Lin Chih-Hsiang (Thompson) | President and CEO | Tax withholding | 3K | $77.32 | $208K | 1.3M |
| 2026-10-22 | Lin Chih-Hsiang (Thompson) | President and CEO | Tax withholding | 2K | $77.32 | $192K | 1.3M |
| 2026-10-22 | Lin Chih-Hsiang (Thompson) | President and CEO | Tax withholding | 9K | $77.32 | $721K | 1.3M |
| 2026-10-12 | Murry Stefan J. | Chief Financial Officer | Sell | 4K | $102.87 | $411K | 363K |
| 2026-10-05 | Yeh Shu-Hua (Joshua) | *** See Remarks | Sell | 6K | $120.03 | $720K | 371K |
| 2026-09-15 | BLACK RICHARD B | Director | Gift | 2K | $0.00 | $0 | 159K |
| 2026-09-10 | Murry Stefan J. | Chief Financial Officer | Sell | 4K | $105.33 | $421K | 367K |
| 2026-09-08 | Chang Hung-Lun (Fred) | *** See Remarks | Sell | 32K | $110.21 | $3.5M | 249K |
| 2026-08-18 | Yeh Shu-Hua (Joshua) | *** See Remarks | Sell | 6K | $147.73 | $886K | 377K |
| 2026-08-10 | Murry Stefan J. | Chief Financial Officer | Sell | 4K | $144.79 | $579K | 371K |
| 2026-08-04 | Yeh Shu-Hua (Joshua) | *** See Remarks | Sell | 5K | $126.50 | $596K | 383K |
| 2026-07-31 | Lin Chih-Hsiang (Thompson) | President and CEO | Grant | 9K | $0.00 | $0 | 1.3M |
| 2026-07-22 | Kuo David C | *** See Remarks | Tax withholding | 407 | $119.26 | $49K | 146K |
| 2026-07-22 | Kuo David C | *** See Remarks | Tax withholding | 516 | $119.26 | $62K | 146K |
| 2026-07-22 | Kuo David C | *** See Remarks | Tax withholding | 472 | $119.26 | $56K | 147K |
| 2026-07-22 | Kuo David C | *** See Remarks | Tax withholding | 2K | $119.26 | $223K | 147K |
| 2026-07-22 | Murry Stefan J. | Chief Financial Officer | Tax withholding | 770 | $119.26 | $92K | 375K |
| 2026-07-22 | Murry Stefan J. | Chief Financial Officer | Tax withholding | 988 | $119.26 | $118K | 376K |
| 2026-07-22 | Murry Stefan J. | Chief Financial Officer | Tax withholding | 679 | $119.26 | $81K | 377K |
| 2026-07-22 | Murry Stefan J. | Chief Financial Officer | Tax withholding | 3K | $119.26 | $354K | 378K |
| 2026-07-22 | Chang Hung-Lun (Fred) | *** See Remarks | Tax withholding | 616 | $119.26 | $73K | 281K |
| 2026-07-22 | Chang Hung-Lun (Fred) | *** See Remarks | Tax withholding | 773 | $119.26 | $92K | 280K |
| 2026-07-22 | Chang Hung-Lun (Fred) | *** See Remarks | Tax withholding | 613 | $119.26 | $73K | 283K |
| 2026-07-22 | Chang Hung-Lun (Fred) | *** See Remarks | Tax withholding | 3K | $119.26 | $319K | 283K |
| 2026-07-22 | Lin Chih-Hsiang (Thompson) | President and CEO | Tax withholding | 2K | $119.26 | $242K | 1.3M |
| 2026-07-22 | Lin Chih-Hsiang (Thompson) | President and CEO | Tax withholding | 3K | $119.26 | $301K | 1.3M |
| 2026-07-22 | Lin Chih-Hsiang (Thompson) | President and CEO | Tax withholding | 2K | $119.26 | $278K | 1.3M |
| 2026-07-22 | Lin Chih-Hsiang (Thompson) | President and CEO | Tax withholding | 9K | $119.26 | $1.0M | 1.3M |
| 2026-07-22 | Yeh Shu-Hua (Joshua) | *** See Remarks | Tax withholding | 686 | $119.26 | $82K | 388K |
| 2026-07-22 | Yeh Shu-Hua (Joshua) | *** See Remarks | Tax withholding | 861 | $119.26 | $103K | 389K |
| 2026-07-22 | Yeh Shu-Hua (Joshua) | *** See Remarks | Tax withholding | 609 | $119.26 | $73K | 390K |
| 2026-07-22 | Yeh Shu-Hua (Joshua) | *** See Remarks | Tax withholding | 3K | $119.26 | $304K | 390K |
| 2026-07-21 | Yeh Shu-Hua (Joshua) | *** See Remarks | Sell | 1K | $120.02 | $154K | 393K |
| 2026-07-10 | Murry Stefan J. | Chief Financial Officer | Sell | 4K | $122.09 | $488K | 381K |
| 2026-06-18 | Yeh Shu-Hua (Joshua) | *** See Remarks | Sell | 6K | $171.89 | $1.0M | 394K |
| 2026-06-17 | Chang Hung-Lun (Fred) | *** See Remarks | Sell | 40K | $170.60 | $6.9M | 286K |
| 2026-06-12 | Yeh Shu-Hua (Joshua) | *** See Remarks | Sell | 29K | $166.53 | $4.8M | 400K |
| 2026-06-12 | Yeh Shu-Hua (Joshua) | *** See Remarks | Tax withholding | 23K | $172.78 | $4.0M | 429K |
| 2026-06-12 | Murry Stefan J. | Chief Financial Officer | Sell | 33K | $166.53 | $5.5M | 385K |
| 2026-06-12 | Murry Stefan J. | Chief Financial Officer | Tax withholding | 30K | $172.78 | $5.2M | 418K |
| 2026-06-12 | Lin Chih-Hsiang (Thompson) | President and CEO | Sell | 59K | $166.53 | $9.8M | 1.3M |
| 2026-06-12 | Lin Chih-Hsiang (Thompson) | President and CEO | Tax withholding | 87K | $172.78 | $15.0M | 1.4M |
| 2026-06-12 | Kuo David C | *** See Remarks | Sell | 29K | $166.53 | $4.9M | 149K |
| 2026-06-12 | Kuo David C | *** See Remarks | Tax withholding | 19K | $172.78 | $3.3M | 178K |
| 2026-06-12 | Chang Hung-Lun (Fred) | *** See Remarks | Sell | 34K | $166.53 | $5.7M | 326K |
| 2026-06-12 | Chang Hung-Lun (Fred) | *** See Remarks | Tax withholding | 27K | $172.78 | $4.7M | 360K |
| 2026-06-10 | Murry Stefan J. | Chief Financial Officer | Sell | 4K | $171.45 | $686K | 448K |
| 2026-06-09 | Yeh William H | Director | Grant | 1K | $0.00 | $0 | 240K |
| 2026-06-09 | Lin Che-Wei | Director | Grant | 1K | $0.00 | $0 | 255K |
| 2026-06-09 | Flanagan Robert James | Director | Grant | 1K | $0.00 | $0 | 1K |
| 2026-06-09 | DeLaney Cynthia | Director | Grant | 1K | $0.00 | $0 | 61K |
| 2026-06-09 | Chen Min-Chu (Mike) | Director | Grant | 1K | $0.00 | $0 | 162K |
| 2026-06-09 | BLACK RICHARD B | Director | Grant | 1K | $0.00 | $0 | 166K |
| 2026-06-05 | Chang Hung-Lun (Fred) | *** See Remarks | Sell | 4K | $200.07 | $800K | 388K |
| 2026-06-04 | Yeh Shu-Hua (Joshua) | *** See Remarks | Sell | 5K | $205.39 | $1.0M | 452K |
| 2026-06-04 | Yeh Shu-Hua (Joshua) | *** See Remarks | Sell | 5K | $204.75 | $1.0M | 457K |
| 2026-06-02 | Chen Min-Chu (Mike) | Director | Sell | 8K | $201.00 | $1.7M | 161K |
| 2026-05-28 | Lin Chih-Hsiang (Thompson) | President and CEO | Other transaction | 722K | price not stated in the filing | not stated | 808K |
| 2026-05-28 | Lin Chih-Hsiang (Thompson) | President and CEO | Gift | 86K | $0.00 | $0 | 86K |
| 2026-05-28 | Lin Chih-Hsiang (Thompson) | President and CEO | Other transaction | 722K | price not stated in the filing | not stated | 808K |
| 2026-05-28 | Lin Chih-Hsiang (Thompson) | President and CEO | Gift | 86K | $0.00 | $0 | 808K |
| 2026-05-26 | DeLaney Cynthia | Director | Sell | 57K | $189.23 | $10.7M | 60K |
| 2026-05-19 | Yeh Shu-Hua (Joshua) | *** See Remarks | Sell | 39K | $173.26 | $6.8M | 462K |
| 2026-05-19 | Yeh Shu-Hua (Joshua) | *** See Remarks | Tax withholding | 8K | $190.36 | $1.5M | 502K |
| 2026-05-19 | Murry Stefan J. | Chief Financial Officer | Sell | 33K | $173.26 | $5.7M | 452K |
| 2026-05-19 | Murry Stefan J. | Chief Financial Officer | Tax withholding | 30K | $190.36 | $5.8M | 485K |
| 2026-05-19 | Lin Chih-Hsiang (Thompson) | President and CEO | Sell | 58K | $173.26 | $10.0M | 2.3M |
| 2026-05-19 | Lin Chih-Hsiang (Thompson) | President and CEO | Tax withholding | 87K | $190.36 | $16.5M | 2.3M |
| 2026-05-19 | Kuo David C | *** See Remarks | Sell | 19K | $173.26 | $3.3M | 197K |
| 2026-05-19 | Kuo David C | *** See Remarks | Tax withholding | 19K | $190.36 | $3.6M | 217K |
| 2026-05-19 | Chang Hung-Lun (Fred) | *** See Remarks | Sell | 34K | $173.26 | $5.8M | 392K |
| 2026-05-19 | Chang Hung-Lun (Fred) | *** See Remarks | Tax withholding | 27K | $190.36 | $5.2M | 425K |
| 2026-05-15 | Yeh Shu-Hua (Joshua) | *** See Remarks | Grant | 192K | $0.00 | $0 | 510K |
| 2026-05-15 | Murry Stefan J. | Chief Financial Officer | Grant | 249K | $0.00 | $0 | 515K |
| 2026-05-15 | Lin Chih-Hsiang (Thompson) | President and CEO | Grant | 712K | $0.00 | $0 | 2.4M |
| 2026-05-15 | Kuo David C | *** See Remarks | Grant | 157K | $0.00 | $0 | 236K |
| 2026-05-15 | Chang Hung-Lun (Fred) | *** See Remarks | Grant | 224K | $0.00 | $0 | 453K |
| 2026-05-11 | Murry Stefan J. | Chief Financial Officer | Sell | 4K | $159.53 | $638K | 266K |
| 2026-04-22 | Lin Chih-Hsiang (Thompson) | President and CEO | Tax withholding | 2K | $150.57 | $326K | 1.7M |
| 2026-04-22 | Lin Chih-Hsiang (Thompson) | President and CEO | Tax withholding | 3K | $150.57 | $405K | 1.7M |
| 2026-04-22 | Lin Chih-Hsiang (Thompson) | President and CEO | Tax withholding | 2K | $150.57 | $374K | 1.7M |
| 2026-04-22 | Lin Chih-Hsiang (Thompson) | President and CEO | Tax withholding | 9K | $150.57 | $1.4M | 1.7M |
| 2026-04-22 | Chang Hung-Lun (Fred) | *** See Remarks | Tax withholding | 677 | $150.57 | $102K | 228K |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Planned sales (Form 144)
Newest first. JSON49 Form 144 notices on file for AAOI worth $134.8M at the prices reported; 7 in the last 90 days worth $7.2M. Latest: Murry Stefan J. filed on 2026-10-13 to sell 4,000 shares ($411K) from 2026-10-12.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-10-13 | Murry Stefan J.Officer | 4K | $411K | 0.005% | 2026-10-12 | Raymond James & Associates, Inc. |
| 2026-10-05 | Yeh Shu-Hua (Joshua)Officer | 6K | $720K | 0.007% | 2026-10-05 | Raymond James & Associates, Inc. |
| 2026-09-10 | Murry Stefan J.Officer | 4K | $421K | 0.005% | 2026-09-10 | Raymond James and Associates |
| 2026-09-09 | Chang Hung-Lun (Fred)Officer | 32K | $3.5M | 0.038% | 2026-09-08 | Raymond James & Associates, Inc. |
| 2026-08-18 | Yeh Shu-Hua (Joshua)Officer | 6K | $886K | 0.007% | 2026-08-18 | Raymond James and Associates Inc. |
| 2026-08-10 | Murry Stefan J.Officer | 4K | $579K | 0.005% | 2026-08-10 | Raymond James & Associates |
| 2026-08-04 | Yeh Shu-Hua (Joshua)Officer | 5K | $596K | 0.006% | 2026-08-04 | Raymond James & Associates |
| 2026-07-21 | Yeh Shu-Hua (Joshua)Officer | 1K | $154K | 0.002% | 2026-07-21 | Raymond James & Associates |
| 2026-07-09 | Murry Stefan J.Officer | 4K | $492K | 0.005% | 2026-07-10 | Raymond James & Associates |
| 2026-06-18 | Yeh Shu-Hua (Joshua)Officer | 6K | $1.0M | 0.007% | 2026-06-18 | Raymond James & Associates |
| 2026-06-17 | Chang Hung-Lun (Fred)Officer | 40K | $6.9M | 0.050% | 2026-06-17 | Raymond James & Associates |
| 2026-06-12 | Yeh Shu-Hua (Joshua)Officer, SENIOR VICE PRESIDENT AND ASIA GENERAL MANAGER | 29K | $5.0M | 0.036% | 2026-06-12 | CITIGROUP GLOBAL MARKETS |
| 2026-06-12 | Lin Chih-Hsiang (Thompson)Officer, PRESIDENT AND CEO | 59K | $10.2M | 0.074% | 2026-06-12 | CITIGROUP GLOBAL MARKETS |
| 2026-06-12 | Murry Stefan J.Officer, CHIEF FINANCIAL OFFICER | 33K | $5.7M | 0.041% | 2026-06-12 | CITIGROUP GLOBAL MARKETS |
| 2026-06-12 | Kuo David COfficer, SENIOR VICE PRESIDENT AND CHIEF LEGAL OFFICER | 29K | $5.0M | 0.036% | 2026-06-12 | CITIGROUP GLOBAL MARKETS |
| 2026-06-12 | Chang Hung-Lun (Fred)Officer, SENIOR VP NORTH AMERICA GENERAL MANAGER | 34K | $5.9M | 0.042% | 2026-06-12 | CITIGROUP GLOBAL MARKETS |
| 2026-06-10 | Murry Stefan J.Officer | 4K | $686K | 0.005% | 2026-06-10 | Raymond James & Associates |
| 2026-06-05 | Chang Hung-Lun (Fred)Officer | 12K | $2.6M | 0.015% | 2026-06-05 | Raymond James & Associates |
| 2026-06-04 | Yeh Shu-Hua (Joshua)Officer | 25K | $5.5M | 0.031% | 2026-06-04 | Raymond James & Associates |
| 2026-05-27 | DeLaney CynthiaDirector | 57K | $10.7M | 0.071% | 2026-05-26 | Raymond James & Associates |
| 2026-05-19 | Murry Stefan J.Officer, CHIEF FINANCIAL OFFICER | 33K | $5.7M | 0.041% | 2026-05-19 | CITIGROUP GLOBAL MARKETS |
| 2026-05-19 | Yeh Shu-Hua (Joshua)Officer, SENIOR VICE PRESIDENT AND ASIA GENERAL MANAGER | 39K | $6.8M | 0.049% | 2026-05-19 | CITIGROUP GLOBAL MARKETS |
| 2026-05-19 | Lin Chih-Hsiang (Thompson)Officer, PRESIDENT AND CEO | 58K | $10.0M | 0.072% | 2026-05-19 | CITIGROUP GLOBAL MARKETS |
| 2026-05-19 | Kuo David COfficer, SENIOR VICE PRESIDENT AND CHIEF LEGAL OFFICER | 19K | $3.3M | 0.024% | 2026-05-19 | CITIGROUP GLOBAL MARKETS |
| 2026-05-19 | Chang Hung-Lun (Fred)Officer, SENIOR VP NORTH AMERICA GENERAL MANAGER | 34K | $5.8M | 0.042% | 2026-05-19 | CITIGROUP GLOBAL MARKETS |
| 2026-05-19 | Chen Min-Chu (Mike)Officer | 18K | $3.1M | 0.023% | 2026-05-19 | Charles Schwab Corp. |
| 2026-05-11 | Murry Stefan J.Officer | 4K | $638K | 0.005% | 2026-05-11 | Raymond James & Associates |
| 2026-04-10 | Murry Stefan J.Officer | 4K | $546K | 0.005% | 2026-04-10 | Raymond James & Associates |
| 2026-03-19 | Kuo David COfficer | 17K | $876K | 0.026% | 2026-02-11 | RAYMOND JAMES & ASSOCIATES, INC. |
| 2026-03-19 | Kuo David COfficer | 29K | $2.9M | 0.039% | 2026-03-19 | RAYMOND JAMES & ASSOCIATES, INC. |
| 2026-03-16 | Chang Hung-Lun (Fred)Officer | 36K | $3.6M | 0.048% | 2026-03-16 | Raymond James & Associates |
| 2026-03-10 | Murry Stefan J.Officer | 4K | $451K | 0.005% | 2026-03-10 | Raymond James & Associates |
| 2026-03-09 | Yeh Shu-Hua (Joshua)Officer | 50K | $4.9M | 0.066% | 2026-03-09 | Raymond James & Associates, Inc. |
| 2026-03-09 | Yeh William HDirector | 15K | $1.6M | 0.020% | 2026-03-09 | Raymond James & Associates |
| 2026-03-06 | Chen Min-Chu (Mike)Officer | 15K | $1.5M | 0.020% | 2026-03-06 | Charles Schwab Corp. |
| 2026-03-05 | BLACK RICHARD BDirector | 3K | $307K | 0.004% | 2026-03-05 | Raymond James & Associates |
| 2026-03-04 | Cynthia DeLaneyDirector of Board | 21K | $2.1M | 0.028% | 2026-03-04 | Ameriprise |
| 2026-03-03 | Loboa Elizabeth GDirector | 102K | $9.8M | 0.136% | 2026-03-03 | Raymond James & Associates |
| 2026-02-11 | Murry Stefan J.Officer | 18K | $884K | 0.026% | 2026-02-11 | Raymond James & Associates |
| 2026-02-11 | Kuo David COfficer | 17K | $876K | 0.026% | 2026-02-11 | Raymond James & Associates |
| 2026-02-10 | Murry Stefan J.Officer | 6K | $311K | 0.009% | 2026-02-10 | Raymond James & Associates |
| 2026-02-10 | Kuo David COfficer | 3K | $127K | 0.004% | 2026-02-10 | Raymond James & Associates |
| 2026-01-28 | Kuo David COfficer | 12K | $541K | 0.018% | 2026-01-28 | Raymond James & Associates |
| 2026-01-13 | Murry Stefan J.Officer | 1K | $35K | 0.001% | 2026-01-13 | RAYMOND JAMES & ASSOCIATES |
| 2026-01-12 | Murry Stefan J.Officer | 3K | $101K | 0.004% | 2026-01-12 | RAYMOND JAMES & ASSOCIATES |
| 2025-12-29 | Kuo David COfficer | 13K | $502K | 0.018% | 2025-12-23 | Raymond James & Associates |
| 2025-12-15 | Loboa Elizabeth GDirector | 4K | $124K | 0.006% | 2025-12-15 | Raymond James & Associates |
| 2025-12-11 | Murry Stefan J.Officer | 4K | $126K | 0.006% | 2025-12-10 | Raymond James & Associates |
| 2025-12-10 | Murry Stefan J.Officer | 3K | $91K | 0.004% | 2025-12-10 | Raymond James & Associates |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON2 holders report 5% or more of AAOI in their latest filing, all on Schedule 13G (passive). The largest reported stake is Marex Securities Products Inc. at 5.6% of the class (4,486,292 shares), filed 2026-05-13 for an event on 2026-05-08.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-10-27 | 13G/Ano. 2 | BlackRock, Inc.parent holding company | 4.2M | 4.9% | 2026-09-30 |
| 2026-08-10 | 13G/Ano. 1 | JANE STREET GROUP, LLCparent holding company | 2.0M | 2.4% | 2026-06-30 |
| 2026-08-10 | 13G/Ano. 1 | Jane Street Capital, LLCbroker-dealer | 2.0M | 2.4% | 2026-06-30 |
| 2026-08-10 | 13G/Ano. 1 | Jane Street Options, LLCbroker-dealer | 0 | 0.0% | 2026-06-30 |
| 2026-08-10 | 13G/Ano. 1 | Jane Street Global Trading, LLCother entity | 1K | 0.0% | 2026-06-30 |
| 2026-08-10 | 13G/Ano. 1 | Jane Street Singapore Pte. Ltdother entity | 228 | 0.0% | 2026-06-30 |
| 2026-05-13 | 13G | Marex Securities Products Inc.corporation | 4.5M | 5.6% | 2026-05-08 |
| 2026-05-13 | 13G | Marex Group plcother entity | 4.5M | 5.6% | 2026-05-08 |
| 2026-05-06 | 13G/Ano. 1 | Invesco Ltd.parent holding company, investment adviser | 2.0M | 2.7% | 2026-03-31 |
| 2026-03-26 | 13G/Ano. 3 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
13F holders
Tracked managers holding AAOI at their latest 13F. JSON5 of the 30 tracked managers held AAOI at their latest 13F, $46.2M in total at quarter-end prices. Millennium Management is the largest at $18.7M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 2 added shares and 3 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Millennium Management | 2026-06-30 | 126K | $18.7M | 0.01% | +30K |
| Citadel Advisors | 2026-06-30 | 73K | $10.8M | 0.00% | -348K |
| AQR Capital Management | 2026-06-30 | 50K | $7.3M | 0.00% | +19K |
| D. E. Shaw & Co. | 2026-06-30 | 41K | $6.1M | 0.00% | -2.1M |
| Two Sigma Investments | 2026-06-30 | 22K | $3.3M | 0.00% | -319K |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
Financials
SEC XBRL, as filed. JSONIn Q2 FY 2026 (quarter ended 2026-06-30) Applied Optoelectronics reported revenue of $191.9M, up 86.4% from the same quarter a year earlier, and net loss of $22.8M (-0.28 diluted EPS). In FY 2025 it generated -$174.4M of operating cash flow. As of 2026-06-30, cash was $499.7M against $1.7M of debt.
- Cash
- $499.7M
- Debt
- $1.7M
- Equity
- $1.67B
- Total assets
- $2.30B
- Shares outstanding
- 84,569,237
Quarterly, last 8 quarters
| Quarter | Period end | Revenue | Net income | Margin | Diluted EPS |
|---|---|---|---|---|---|
| Q2 FY 2026 | 2026-06-30 | $191.9M | -$22.8M | -11.9% | -0.28 |
| Q1 FY 2026 | 2026-03-31 | $151.1M | -$14.3M | -9.4% | -0.19 |
| Q4 FY 2025derived | 2025-12-31 | $134.3M | -$2.0M | -1.5% | n/a |
| Q3 FY 2025 | 2025-09-30 | $118.6M | -$17.9M | -15.1% | -0.28 |
| Q2 FY 2025 | 2025-06-30 | $103.0M | -$9.1M | -8.8% | -0.16 |
| Q1 FY 2025 | 2025-03-31 | $99.9M | -$9.2M | -9.2% | -0.18 |
| Q4 FY 2024derived | 2024-12-31 | $100.3M | -$119.7M | -119.4% | n/a |
| Q3 FY 2024 | 2024-09-30 | $65.2M | -$17.8M | -27.3% | -0.42 |
Fiscal years, with buybacks and dividends
| Fiscal year | Ends | Revenue | Net income | Operating cash flow | Capex | Buybacks | Dividends |
|---|---|---|---|---|---|---|---|
| FY 2025 | 2025-12-31 | $455.7M | -$38.2M | -$174.4M | $179.1M | n/a | n/a |
| FY 2024 | 2024-12-31 | $249.4M | -$186.7M | -$69.5M | $43.4M | n/a | n/a |
| FY 2023 | 2023-12-31 | $217.6M | -$56.0M | -$7.9M | $9.1M | n/a | n/a |
| FY 2022 | 2022-12-31 | $222.8M | -$66.4M | -$14.0M | $3.2M | n/a | n/a |
| FY 2021 | 2021-12-31 | $211.6M | -$54.2M | -$11.6M | $8.0M | n/a | n/a |
Quarters are the three-month figures the company reports; a fourth quarter marked derived is the fiscal year less the three reported quarters, since companies report it only inside the 10-K. Fiscal years are the annual figures. Buybacks are the cash the company paid to repurchase its common stock in the year, not the amount authorized. Balance sheet lines are as of 2026-06-30; shares outstanding as of 2026-08-03 from the cover page.
What this page is
Applied Optoelectronics in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows Applied Optoelectronics (AAOI), SEC CIK 1158114, listed on Nasdaq, classified by the SEC as semiconductors & related devices. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-10-15.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-10-28.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-09-29.JSON and CSV
- Planned sales
- SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2026-10-13.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-10-27.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Financials
- SEC EDGAR 10-K and 10-Q filingsSource: SEC.Weekly; values are as filed in the 10-Q and 10-K. Latest 2026-06-30.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-08-06.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-10-22.JSON and CSV
- Company record
- EDGAR filing index for CIK 1158114Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
Other companies the SEC classifies as semiconductors & related devices
Other company pages
Datasets
Frequently Asked Questions
How much of AAOI is sold short?
16,296,183 shares were held short at the 2026-10-15 settlement, 1.3 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is AAOI's daily short volume?
On 2026-10-28, 2,621,187 of the 4,255,967 AAOI shares reported to FINRA were sold short, 61.6% of the day's reported volume. Short volume is a flow for one day, not a position.
Does AAOI have fails to deliver?
The SEC's latest file shows 13,500 AAOI shares failed to deliver at settlement 2026-09-29. Fails are reported per settlement date and published twice a month with a lag.
Are AAOI insiders buying or selling?
Insiders at AAOI reported 7 open-market sells worth $7.2M in the last 90 days and no open-market buys. Latest filing: Chang Hung-Lun (Fred) (*** See Remarks) on 2026-10-22.
Have AAOI insiders filed to sell?
49 Form 144 notices on file for AAOI worth $134.8M at the prices reported; 7 in the last 90 days worth $7.2M. Latest: Murry Stefan J. filed on 2026-10-13 to sell 4,000 shares ($411K) from 2026-10-12.
Who owns 5% or more of AAOI?
2 holders report 5% or more of AAOI in their latest filing, all on Schedule 13G (passive). The largest reported stake is Marex Securities Products Inc. at 5.6% of the class (4,486,292 shares), filed 2026-05-13 for an event on 2026-05-08.
What did AAOI report last quarter?
In Q2 FY 2026 (quarter ended 2026-06-30) Applied Optoelectronics reported revenue of $191.9M, up 86.4% from the same quarter a year earlier, and net loss of $22.8M (-0.28 diluted EPS). In FY 2025 it generated -$174.4M of operating cash flow. As of 2026-06-30, cash was $499.7M against $1.7M of debt.
Which tracked 13F managers own AAOI?
5 of the 30 tracked 13F managers held AAOI shares at their latest filing, $46.2M in all. The largest: Izzy Englander's Millennium Management (126K shares, $18.7M), Ken Griffin's Citadel Advisors (73K shares, $10.8M), Cliff Asness's AQR Capital Management (50K shares, $7.3M), D. E. Shaw & Co. (41K shares, $6.1M), Two Sigma Investments (22K shares, $3.3M).
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.