Astera Labs (ALAB)
Astera Labs on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as semiconductors & related devices.
8.0M
Short interest
settlement 2026-10-15
1.8
Days to cover
-0.4 days vs prior
50.6%
Short share of volume
2026-10-28
3,282
Fails to deliver
settlement 2026-09-30
Tue 3 Nov
Next earnings
estimated date
-$127.3M
Insider flow, 90 days
0 buys, 102 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 ALAB is 8,015,331 shares, down 670,579 shares over the last month. Over the last 48 readings it ranged from 7,678,854 shares (31 January 2025) to 15,495,055 shares (31 March 2026). The latest reading sits at the bottom of that range. At the reported average volume of 4.4M shares a day that is 1.8 days to cover.
Embed this chart.The embed keeps its attribution line.
<iframe src="https://xoomar.com/embed/stocks/alab" width="100%" height="440" style="border:0;max-width:100%" loading="lazy" title="XOOMAR chart"></iframe>
| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 8,015,331 | -12.7% | 4,421,940 | 1.81 |
| 2026-09-30 | 9,176,900 | +5.7% | 4,126,264 | 2.22 |
| 2026-09-15 | 8,685,910 | -3.9% | 3,878,190 | 2.24 |
| 2026-08-31 | 9,033,499 | +3.2% | 3,197,501 | 2.83 |
| 2026-08-14 | 8,753,228 | -3.9% | 4,734,294 | 1.85 |
| 2026-07-31 | 9,109,856 | -4.4% | 4,494,876 | 2.03 |
| 2026-07-15 | 9,525,824 | -24.9% | 4,602,991 | 2.07 |
| 2026-06-30 | 12,676,294 | +10.1% | 7,296,656 | 1.74 |
| 2026-06-15 | 11,511,657 | -3.3% | 5,580,970 | 2.06 |
| 2026-05-29 | 11,906,625 | -4.1% | 7,029,384 | 1.69 |
| 2026-05-15 | 12,417,409 | -5.4% | 5,734,203 | 2.17 |
| 2026-04-30 | 13,125,304 | -9.1% | 5,671,640 | 2.31 |
| 2026-04-15 | 14,440,640 | -6.8% | 5,695,210 | 2.54 |
| 2026-03-31 | 15,495,055 | +14.6% | 4,355,140 | 3.56 |
| 2026-03-13 | 13,516,520 | +25.6% | 4,874,844 | 2.77 |
| 2026-02-27 | 10,763,918 | -7.5% | 3,848,917 | 2.80 |
| 2026-02-13 | 11,632,347 | +9.2% | 7,593,876 | 1.53 |
| 2026-01-30 | 10,653,797 | -4.4% | 4,674,980 | 2.28 |
| 2026-01-15 | 11,139,247 | -4.9% | 5,005,664 | 2.23 |
| 2025-12-31 | 11,711,907 | -4.7% | 3,448,172 | 3.40 |
| 2025-12-15 | 12,293,014 | +1.8% | 7,056,946 | 1.74 |
| 2025-11-28 | 12,081,579 | +13.5% | 6,152,726 | 1.96 |
| 2025-11-14 | 10,645,508 | +26.8% | 6,402,199 | 1.66 |
| 2025-10-31 | 8,398,986 | -9.3% | 4,949,276 | 1.70 |
| 2025-10-15 | 9,260,453 | +3.0% | 7,049,741 | 1.31 |
| 2025-09-30 | 8,989,174 | -6.6% | 7,564,602 | 1.19 |
| 2025-09-15 | 9,621,313 | +4.5% | 5,389,988 | 1.79 |
| 2025-08-29 | 9,206,501 | +2.3% | 4,187,157 | 2.20 |
| 2025-08-15 | 8,997,848 | -3.0% | 7,035,267 | 1.28 |
| 2025-07-31 | 9,280,319 | -16.9% | 6,300,511 | 1.47 |
| 2025-07-15 | 11,165,582 | +1.2% | 3,999,303 | 2.79 |
| 2025-06-30 | 11,029,405 | +0.5% | 5,999,550 | 1.84 |
| 2025-06-13 | 10,977,921 | +3.0% | 3,266,908 | 3.36 |
| 2025-05-30 | 10,657,092 | -2.9% | 4,660,808 | 2.29 |
| 2025-05-15 | 10,970,970 | +1.9% | 4,843,278 | 2.27 |
| 2025-04-30 | 10,761,874 | +5.6% | 2,567,758 | 4.19 |
| 2025-04-15 | 10,193,758 | -5.8% | 4,618,847 | 2.21 |
| 2025-03-31 | 10,824,891 | -2.6% | 2,936,337 | 3.69 |
| 2025-03-14 | 11,119,748 | +16.4% | 5,247,633 | 2.12 |
| 2025-02-28 | 9,551,710 | +12.2% | 5,603,421 | 1.70 |
| 2025-02-14 | 8,510,641 | +10.8% | 6,602,470 | 1.29 |
| 2025-01-31 | 7,678,854 | -4.6% | 6,380,059 | 1.20 |
| 2025-01-15 | 8,046,067 | -20.0% | 3,175,147 | 2.53 |
| 2024-12-31 | 10,061,804 | +25.1% | 4,824,533 | 2.09 |
| 2024-12-13 | 8,044,507 | -3.6% | 4,133,736 | 1.95 |
| 2024-11-29 | 8,341,303 | -6.4% | 5,637,935 | 1.48 |
| 2024-11-15 | 8,909,518 | -16.3% | 7,362,073 | 1.21 |
| 2024-10-31 | 10,641,402 | +3.0% | 3,099,302 | 3.43 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 28 October 2026, the short share of ALAB volume is 50.6%, down 7.7 points over the last five sessions. Over the last 30 readings it ranged from 42.0% (12 October 2026) to 64.3% (24 September 2026). The latest reading is 3.6 points below the 30-session average of 54.2%, on 1.3M shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-10-28 | 659K | 1.3M | 50.6% | 32,246 |
| 2026-10-27 | 885K | 1.6M | 55.1% | 1,665 |
| 2026-10-26 | 632K | 1.2M | 54.4% | 2,509 |
| 2026-10-23 | 509K | 941K | 54.1% | 34,335 |
| 2026-10-22 | 1.0M | 2.1M | 49.6% | 39,408 |
| 2026-10-21 | 485K | 833K | 58.2% | 1,996 |
| 2026-10-20 | 446K | 811K | 55.0% | 68 |
| 2026-10-19 | 563K | 1.1M | 51.7% | 295 |
| 2026-10-16 | 753K | 1.5M | 51.8% | 2,233 |
| 2026-10-15 | 868K | 1.7M | 52.6% | 2,067 |
| 2026-10-14 | 787K | 1.4M | 55.0% | 532 |
| 2026-10-13 | 600K | 1.2M | 49.4% | 13,520 |
| 2026-10-12 | 606K | 1.4M | 42.0% | 21 |
| 2026-10-09 | 756K | 1.7M | 43.5% | 82,078 |
| 2026-10-08 | 1.4M | 2.7M | 52.0% | 12,578 |
| 2026-10-07 | 1.1M | 1.9M | 56.8% | 2,898 |
| 2026-10-06 | 2.0M | 3.1M | 63.5% | 2,501 |
| 2026-10-05 | 867K | 1.4M | 62.1% | 21,220 |
| 2026-10-02 | 1.1M | 1.8M | 58.4% | 1,243 |
| 2026-10-01 | 960K | 1.6M | 60.5% | 1,575 |
| 2026-09-30 | 559K | 1.3M | 43.7% | 347 |
| 2026-09-29 | 539K | 1.1M | 49.6% | 349 |
| 2026-09-28 | 827K | 1.6M | 50.1% | 1,518 |
| 2026-09-25 | 753K | 1.3M | 59.7% | 1,404 |
| 2026-09-24 | 842K | 1.3M | 64.3% | 441 |
| 2026-09-23 | 695K | 1.4M | 50.2% | 2,410 |
| 2026-09-22 | 1.5M | 2.3M | 63.1% | 3,365 |
| 2026-09-21 | 1.2M | 2.1M | 60.1% | 856 |
| 2026-09-18 | 816K | 1.3M | 61.5% | 9,160 |
| 2026-09-17 | 784K | 1.7M | 46.3% | 4,120 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 30 September 2026, the fails-to-deliver balance in ALAB is 3,282 shares, down 280 shares over the last settlement date. Over the last 30 readings it ranged from 14 shares (3 September 2026) to 47,345 shares (6 July 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-09-30 | 3,282 | $357.84 | $1.2M |
| 2026-09-29 | 3,562 | $351.31 | $1.3M |
| 2026-09-28 | 11,647 | $364.62 | $4.2M |
| 2026-09-24 | 3,497 | $360.46 | $1.3M |
| 2026-09-22 | 20 | $340.74 | $7K |
| 2026-09-21 | 448 | $303.25 | $136K |
| 2026-09-18 | 123 | $293.56 | $36K |
| 2026-09-08 | 400 | $310.40 | $124K |
| 2026-09-03 | 14 | $274.13 | $4K |
| 2026-09-02 | 22,174 | $279.91 | $6.2M |
| 2026-08-28 | 84 | $304.09 | $26K |
| 2026-08-27 | 213 | $290.30 | $62K |
| 2026-08-26 | 22 | $282.65 | $6K |
| 2026-08-24 | 1,024 | $284.97 | $292K |
| 2026-08-14 | 24,226 | $322.78 | $7.8M |
| 2026-08-11 | 40,683 | $317.23 | $12.9M |
| 2026-08-10 | 43,973 | $334.17 | $14.7M |
| 2026-08-05 | 6,312 | $361.67 | $2.3M |
| 2026-08-04 | 22,147 | $321.05 | $7.1M |
| 2026-07-29 | 50 | $260.23 | $13K |
| 2026-07-27 | 25 | $291.58 | $7K |
| 2026-07-20 | 2,700 | $303.62 | $820K |
| 2026-07-17 | 1,266 | $319.74 | $405K |
| 2026-07-09 | 69 | $393.16 | $27K |
| 2026-07-08 | 100 | $382.89 | $38K |
| 2026-07-07 | 338 | $432.74 | $146K |
| 2026-07-06 | 47,345 | $406.42 | $19.2M |
| 2026-06-30 | 5,727 | $455.96 | $2.6M |
| 2026-06-29 | 423 | $391.74 | $166K |
| 2026-06-25 | 718 | $399.92 | $287K |
Insider trades
SEC Form 4, newest first. JSONInsiders at ALAB reported 102 open-market sells worth $127.3M in the last 90 days and no open-market buys. Latest filing: Dyckerhoff Stefan A (Director) on 2026-10-07.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-10-07 | Dyckerhoff Stefan A | Director | Sell | 661 | $376.06 | $249K | 3K |
| 2026-10-07 | Dyckerhoff Stefan A | Director | Sell | 8K | $376.06 | $3.1M | 286K |
| 2026-10-07 | Dyckerhoff Stefan A | Director | Sell | 4K | $376.06 | $1.3M | 47K |
| 2026-10-01 | HURLSTON MICHAEL E. | Director | Grant | 72 | $311.57 | $22K | 93K |
| 2026-10-01 | BARRATT CRAIG H | Director | Grant | 68 | $311.57 | $21K | 7K |
| 2026-10-01 | Dyckerhoff Stefan A | Director | Grant | 68 | $311.57 | $21K | 51K |
| 2026-09-02 | Dyckerhoff Stefan A | Director | Sell | 32 | $276.75 | $9K | 3K |
| 2026-09-02 | Dyckerhoff Stefan A | Director | Sell | 407 | $276.75 | $113K | 295K |
| 2026-09-02 | Dyckerhoff Stefan A | Director | Sell | 172 | $276.75 | $48K | 50K |
| 2026-09-02 | Dyckerhoff Stefan A | Director | Sell | 148 | $275.53 | $41K | 3K |
| 2026-09-02 | Dyckerhoff Stefan A | Director | Sell | 2K | $275.53 | $514K | 295K |
| 2026-09-02 | Dyckerhoff Stefan A | Director | Sell | 785 | $275.53 | $216K | 51K |
| 2026-09-02 | Dyckerhoff Stefan A | Director | Sell | 429 | $274.79 | $118K | 3K |
| 2026-09-02 | Dyckerhoff Stefan A | Director | Sell | 5K | $274.79 | $1.5M | 297K |
| 2026-09-02 | Dyckerhoff Stefan A | Director | Sell | 2K | $274.79 | $625K | 51K |
| 2026-09-02 | Dyckerhoff Stefan A | Director | Sell | 52 | $273.64 | $14K | 4K |
| 2026-09-02 | Dyckerhoff Stefan A | Director | Sell | 650 | $273.64 | $178K | 302K |
| 2026-09-02 | Dyckerhoff Stefan A | Director | Sell | 273 | $273.64 | $75K | 54K |
| 2026-09-01 | ALBA MANUEL | Director | Sell | 196 | $288.95 | $57K | 254K |
| 2026-09-01 | ALBA MANUEL | Director | Sell | 225 | $287.93 | $65K | 254K |
| 2026-09-01 | ALBA MANUEL | Director | Sell | 588 | $287.00 | $169K | 254K |
| 2026-09-01 | ALBA MANUEL | Director | Sell | 74 | $285.18 | $21K | 255K |
| 2026-09-01 | ALBA MANUEL | Director | Sell | 491 | $284.18 | $140K | 255K |
| 2026-09-01 | ALBA MANUEL | Director | Sell | 868 | $283.18 | $246K | 255K |
| 2026-09-01 | ALBA MANUEL | Director | Sell | 1K | $282.13 | $363K | 256K |
| 2026-09-01 | ALBA MANUEL | Director | Sell | 3K | $281.16 | $797K | 258K |
| 2026-09-01 | ALBA MANUEL | Director | Sell | 13K | $280.04 | $3.7M | 260K |
| 2026-09-01 | ALBA MANUEL | Director | Sell | 8K | $279.28 | $2.3M | 273K |
| 2026-09-01 | ALBA MANUEL | Director | Sell | 5K | $278.33 | $1.3M | 282K |
| 2026-09-01 | ALBA MANUEL | Director | Sell | 568 | $277.32 | $158K | 286K |
| 2026-09-01 | ALBA MANUEL | Director | Sell | 892 | $288.95 | $258K | 1.1M |
| 2026-09-01 | ALBA MANUEL | Director | Sell | 1K | $287.93 | $293K | 1.1M |
| 2026-09-01 | ALBA MANUEL | Director | Sell | 3K | $286.99 | $768K | 1.1M |
| 2026-09-01 | ALBA MANUEL | Director | Sell | 340 | $285.18 | $97K | 1.1M |
| 2026-09-01 | ALBA MANUEL | Director | Sell | 2K | $284.17 | $638K | 1.1M |
| 2026-09-01 | ALBA MANUEL | Director | Sell | 4K | $283.19 | $1.1M | 1.1M |
| 2026-09-01 | ALBA MANUEL | Director | Sell | 6K | $282.13 | $1.7M | 1.1M |
| 2026-09-01 | ALBA MANUEL | Director | Sell | 13K | $281.16 | $3.6M | 1.1M |
| 2026-09-01 | ALBA MANUEL | Director | Sell | 59K | $280.04 | $16.6M | 1.2M |
| 2026-09-01 | ALBA MANUEL | Director | Sell | 37K | $279.28 | $10.4M | 1.2M |
| 2026-09-01 | ALBA MANUEL | Director | Sell | 21K | $278.33 | $5.8M | 1.3M |
| 2026-09-01 | ALBA MANUEL | Director | Sell | 3K | $277.32 | $714K | 1.3M |
| 2026-08-17 | Gajendra Sanjay | President and COO | Sell | 13K | $333.60 | $4.2M | 1.1M |
| 2026-08-17 | Gajendra Sanjay | President and COO | Sell | 7K | $334.23 | $2.3M | 1.1M |
| 2026-08-17 | Gajendra Sanjay | President and COO | Sell | 2K | $335.41 | $598K | 1.1M |
| 2026-08-17 | Gajendra Sanjay | President and COO | Sell | 3K | $336.65 | $992K | 1.1M |
| 2026-08-17 | Gajendra Sanjay | President and COO | Sell | 10K | $337.76 | $3.5M | 1.1M |
| 2026-08-17 | Gajendra Sanjay | President and COO | Sell | 8K | $338.58 | $2.7M | 1.2M |
| 2026-08-17 | Gajendra Sanjay | President and COO | Sell | 6K | $339.74 | $2.2M | 1.2M |
| 2026-08-17 | Gajendra Sanjay | President and COO | Sell | 3K | $340.58 | $891K | 1.2M |
| 2026-08-17 | Gajendra Sanjay | President and COO | Sell | 2K | $341.71 | $550K | 1.2M |
| 2026-08-17 | Gajendra Sanjay | President and COO | Sell | 5K | $342.95 | $1.9M | 1.2M |
| 2026-08-17 | Gajendra Sanjay | President and COO | Sell | 4K | $343.94 | $1.3M | 1.2M |
| 2026-08-17 | Gajendra Sanjay | President and COO | Sell | 17K | $344.99 | $6.0M | 1.2M |
| 2026-08-17 | Gajendra Sanjay | President and COO | Sell | 3K | $346.13 | $874K | 1.2M |
| 2026-08-17 | Gajendra Sanjay | President and COO | Sell | 4K | $347.01 | $1.2M | 1.2M |
| 2026-08-17 | Gajendra Sanjay | President and COO | Sell | 1K | $348.05 | $368K | 1.2M |
| 2026-08-17 | Gajendra Sanjay | President and COO | Sell | 2K | $349.19 | $693K | 1.2M |
| 2026-08-17 | Gajendra Sanjay | President and COO | Sell | 1K | $351.24 | $368K | 1.2M |
| 2026-08-17 | Gajendra Sanjay | President and COO | Sell | 578 | $352.11 | $204K | 1.2M |
| 2026-08-17 | Mazzara Philip | General Counsel and Secretary | Sell | 814 | $333.64 | $272K | 97K |
| 2026-08-17 | Mazzara Philip | General Counsel and Secretary | Sell | 540 | $334.23 | $180K | 97K |
| 2026-08-17 | Mazzara Philip | General Counsel and Secretary | Sell | 136 | $335.42 | $46K | 98K |
| 2026-08-17 | Mazzara Philip | General Counsel and Secretary | Sell | 227 | $336.65 | $76K | 98K |
| 2026-08-17 | Mazzara Philip | General Counsel and Secretary | Sell | 797 | $337.76 | $269K | 98K |
| 2026-08-17 | Mazzara Philip | General Counsel and Secretary | Sell | 610 | $338.58 | $207K | 99K |
| 2026-08-17 | Mazzara Philip | General Counsel and Secretary | Sell | 504 | $339.74 | $171K | 100K |
| 2026-08-17 | Mazzara Philip | General Counsel and Secretary | Sell | 205 | $340.58 | $70K | 100K |
| 2026-08-17 | Mazzara Philip | General Counsel and Secretary | Sell | 125 | $341.71 | $43K | 100K |
| 2026-08-17 | Mazzara Philip | General Counsel and Secretary | Sell | 415 | $342.95 | $142K | 101K |
| 2026-08-17 | Mazzara Philip | General Counsel and Secretary | Sell | 287 | $343.94 | $99K | 101K |
| 2026-08-17 | Mazzara Philip | General Counsel and Secretary | Sell | 1K | $344.99 | $452K | 101K |
| 2026-08-17 | Mazzara Philip | General Counsel and Secretary | Sell | 199 | $346.13 | $69K | 103K |
| 2026-08-17 | Mazzara Philip | General Counsel and Secretary | Sell | 269 | $347.02 | $93K | 103K |
| 2026-08-17 | Mazzara Philip | General Counsel and Secretary | Sell | 81 | $348.05 | $28K | 103K |
| 2026-08-17 | Mazzara Philip | General Counsel and Secretary | Sell | 156 | $349.19 | $54K | 103K |
| 2026-08-17 | Mazzara Philip | General Counsel and Secretary | Sell | 82 | $351.24 | $29K | 103K |
| 2026-08-17 | Mazzara Philip | General Counsel and Secretary | Sell | 44 | $352.10 | $15K | 103K |
| 2026-08-17 | Mohan Jitendra | Chief Executive Officer | Sell | 13K | $333.60 | $4.2M | 1.3M |
| 2026-08-17 | Mohan Jitendra | Chief Executive Officer | Sell | 7K | $334.23 | $2.3M | 1.3M |
| 2026-08-17 | Mohan Jitendra | Chief Executive Officer | Sell | 2K | $335.41 | $598K | 1.3M |
| 2026-08-17 | Mohan Jitendra | Chief Executive Officer | Sell | 3K | $336.65 | $992K | 1.3M |
| 2026-08-17 | Mohan Jitendra | Chief Executive Officer | Sell | 10K | $337.76 | $3.5M | 1.3M |
| 2026-08-17 | Mohan Jitendra | Chief Executive Officer | Sell | 8K | $338.58 | $2.7M | 1.3M |
| 2026-08-17 | Mohan Jitendra | Chief Executive Officer | Sell | 6K | $339.74 | $2.2M | 1.3M |
| 2026-08-17 | Mohan Jitendra | Chief Executive Officer | Sell | 3K | $340.58 | $891K | 1.3M |
| 2026-08-17 | Mohan Jitendra | Chief Executive Officer | Sell | 2K | $341.71 | $550K | 1.3M |
| 2026-08-17 | Mohan Jitendra | Chief Executive Officer | Sell | 5K | $342.95 | $1.9M | 1.3M |
| 2026-08-17 | Mohan Jitendra | Chief Executive Officer | Sell | 4K | $343.94 | $1.3M | 1.3M |
| 2026-08-17 | Mohan Jitendra | Chief Executive Officer | Sell | 17K | $344.99 | $6.0M | 1.3M |
| 2026-08-17 | Mohan Jitendra | Chief Executive Officer | Sell | 3K | $346.13 | $874K | 1.3M |
| 2026-08-17 | Mohan Jitendra | Chief Executive Officer | Sell | 4K | $347.01 | $1.2M | 1.3M |
| 2026-08-17 | Mohan Jitendra | Chief Executive Officer | Sell | 1K | $348.05 | $368K | 1.4M |
| 2026-08-17 | Mohan Jitendra | Chief Executive Officer | Sell | 2K | $349.19 | $693K | 1.4M |
| 2026-08-17 | Mohan Jitendra | Chief Executive Officer | Sell | 1K | $351.24 | $368K | 1.4M |
| 2026-08-17 | Mohan Jitendra | Chief Executive Officer | Sell | 578 | $352.11 | $204K | 1.4M |
| 2026-08-06 | Dyckerhoff Stefan A | Director | Sell | 416 | $313.07 | $130K | 4K |
| 2026-08-06 | Dyckerhoff Stefan A | Director | Sell | 5K | $313.07 | $1.6M | 303K |
| 2026-08-06 | Dyckerhoff Stefan A | Director | Sell | 2K | $313.07 | $691K | 54K |
| 2026-08-06 | Dyckerhoff Stefan A | Director | Sell | 51 | $311.37 | $16K | 4K |
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 ALAB worth $782.2M at the prices reported; 6 in the last 90 days worth $116.9M. Latest: Dyckerhoff Stefan A filed on 2026-10-07 to sell 12,499 shares ($4.7M) from 2026-10-07.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-10-07 | Dyckerhoff Stefan AAffiliate | 12K | $4.7M | 0.007% | 2026-10-07 | Stifel Nicolaus & Company Inc |
| 2026-09-02 | Dyckerhoff Stefan AAffiliate | 12K | $3.4M | 0.007% | 2026-09-02 | Stifel Nicolaus & Company Inc |
| 2026-09-01 | Mar 2011 Childrens TrustDirector | 170K | $50.5M | 0.098% | 2026-09-01 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-09-01 | Alba 2003 Living TrustDirector | 150K | $44.5M | 0.086% | 2026-09-01 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-09-01 | Casa Alameda 2007, LLCDirector | 33K | $9.8M | 0.019% | 2026-09-01 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-06 | Dyckerhoff Stefan AAffiliate | 12K | $3.9M | 0.007% | 2026-08-06 | Stifel Nicolaus & Company Inc |
| 2026-07-01 | Dyckerhoff Stefan AAffiliate | 12K | $5.6M | 0.007% | 2026-07-01 | Stifel Nicolaus & Company Inc |
| 2026-07-01 | MAR 2011 CHILDRENS TRUST U/A DTD 06/01/2011Director | 170K | $82.1M | 0.099% | 2026-07-01 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-07-01 | CASA ALAMEDA 2007, LLCDirector | 33K | $15.9M | 0.019% | 2026-07-01 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-07-01 | ALBA 2003 LIVING TRUSTDirector | 150K | $72.5M | 0.088% | 2026-07-01 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-06-24 | Mayer BethanyDirector | 686 | $276K | 0.000% | 2026-06-24 | UBS Financial Services, Inc. |
| 2026-06-04 | LAZAR JACK RDirector | 10K | $3.6M | 0.006% | 2026-06-04 | UBS Financial Services, Inc. |
| 2026-06-03 | Dyckerhoff Stefan AAffiliate | 12K | $4.6M | 0.007% | 2026-06-03 | Stifel Nicolaus & Company Inc |
| 2026-05-28 | TATE 1997 LIVING TRUSTFormer Officer | 30K | $10.4M | 0.018% | 2026-05-28 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-26 | TATE 1997 LIVING TRUSTFormer Officer | 20K | $6.4M | 0.012% | 2026-05-26 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-22 | TATE 1997 LIVING TRUSTFormer Officer | 30K | $9.3M | 0.018% | 2026-05-22 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-21 | PHILIP MAZZARAOfficer | 796 | $232K | 0.000% | 2026-05-21 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-21 | Navad Trust dated November 1, 2012Director, Officer | 400K | $115.0M | 0.233% | 2026-05-21 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-21 | TATE 1997 LIVING TRUSTFormer Officer | 20K | $5.9M | 0.012% | 2026-05-21 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-20 | TATE 1997 LIVING TRUSTFormer Officer | 8K | $2.3M | 0.005% | 2026-05-20 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-19 | RN2021 Irrevocable Trust dated June 10, 2021Director, Officer | 40K | $8.6M | 0.023% | 2026-05-19 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-19 | SN2021 Irrevocable Trust dated June 10, 2021Director, Officer | 40K | $8.6M | 0.023% | 2026-05-19 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-19 | Navad Trust dated November 1, 2012Director, Officer | 200K | $43.1M | 0.117% | 2026-05-19 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-18 | PHILIP MAZZARAOfficer | 9K | $2.2M | 0.005% | 2026-05-18 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-14 | TATE 1997 LIVING TRUSTFormer Officer | 50K | $11.2M | 0.029% | 2026-05-14 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-07 | Dyckerhoff Stefan AAffiliate | 12K | $2.5M | 0.007% | 2026-05-07 | Stifel Nicolaus & Company Inc |
| 2026-05-07 | SN2021 Irrevocable Trust dated June 10, 2021Director, Officer | 40K | $8.6M | 0.023% | 2026-05-07 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-07 | RN2021 Irrevocable Trust dated June 10, 2021Director, Officer | 40K | $8.6M | 0.023% | 2026-05-07 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-07 | Navad Trust dated November 1, 2012Director, Officer | 200K | $42.8M | 0.117% | 2026-05-07 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-04-17 | Dyckerhoff Stefan AAffiliate | 25K | $4.4M | 0.015% | 2026-04-17 | Stifel |
| 2026-04-01 | ALBA 2003 LIVING TRUSTDirector | 150K | $16.4M | 0.088% | 2026-04-01 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-04-01 | CASA ALAMEDA 2007, LLCDirector | 33K | $3.6M | 0.019% | 2026-04-01 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-04-01 | MAR 2011 CHILDRENS TRUST U/A DTD 06/01/2011Director | 170K | $18.6M | 0.100% | 2026-04-01 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-03-17 | Jitendra MohanCEO, Director | 281K | $35.9M | 0.165% | 2026-03-17 | J.P. Morgan Securities LLC |
| 2026-03-16 | LAZAR JACK RDirector | 3K | $325K | 0.001% | 2026-03-16 | UBS Financial Services, Inc. |
| 2026-03-05 | LAZAR JACK RDirector | 8K | $898K | 0.004% | 2026-03-05 | UBS Financial Services, Inc. |
| 2026-02-19 | Mazzara PhilipOfficer | 5K | $600K | 0.003% | 2026-02-17 | Morgan Stanley Smith Barney LLC |
| 2026-02-19 | Tate Michael TruettOfficer | 12K | $1.5M | 0.007% | 2026-02-17 | Morgan Stanley Smith Barney LLC |
| 2026-02-19 | Gajendra SanjayOfficer, Director | 95K | $11.8M | 0.056% | 2026-02-17 | Morgan Stanley Smith Barney LLC |
| 2026-02-19 | Mohan JitendraOfficer, Director | 95K | $11.8M | 0.056% | 2026-02-17 | Morgan Stanley Smith Barney LLC |
| 2026-01-02 | PHILIP MAZZARAOfficer | 30K | $5.0M | 0.018% | 2026-01-02 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-01 | MAR 2011 CHILDRENS TRUST U/A DTD 06/01/2011Director | 170K | $26.8M | 0.101% | 2025-12-01 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-01 | CASA ALAMEDA 2007, LLCDirector | 33K | $5.2M | 0.020% | 2025-12-01 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-12-01 | ALBA 2003 LIVING TRUSTDirector | 150K | $23.6M | 0.089% | 2025-12-01 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-11-20 | LAZAR JACK RDirector | 3K | $386K | 0.001% | 2025-11-20 | UBS Financial Services, Inc. |
| 2025-11-17 | Tate Michael TruettOfficer | 11K | $1.6M | 0.007% | 2025-11-17 | Morgan Stanley Smith Barney LLC |
| 2025-11-17 | Mazzara PhilipOfficer | 5K | $667K | 0.003% | 2025-11-17 | Morgan Stanley Smith Barney LLC |
| 2025-11-17 | Gajendra SanjayOfficer, Director | 90K | $13.1M | 0.054% | 2025-11-17 | Morgan Stanley Smith Barney LLC |
| 2025-11-17 | Mohan JitendraOfficer, Director | 90K | $13.1M | 0.054% | 2025-11-17 | Morgan Stanley Smith Barney LLC |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON4 holders report 5% or more of ALAB in their latest filing, all on Schedule 13G (passive). The largest reported stake is Abigail P. Johnson at 9.1% of the class (15,774,196 shares), filed 2026-10-07 for an event on 2026-09-30.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-10-07 | 13G/Ano. 2 | Abigail P. Johnsonindividual | 15.8M | 9.1% | 2026-09-30 |
| 2026-10-07 | 13G/Ano. 2 | FMR LLCparent holding company | 15.8M | 9.1% | 2026-09-30 |
| 2026-07-27 | 13G/Ano. 2 | BlackRock, Inc.parent holding company | 12.7M | 7.4% | 2026-06-30 |
| 2026-03-26 | 13G/Ano. 2 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
| 2025-11-14 | 13G/Ano. 1 | Gajendra Sanjayindividual | 7.6M | 4.5% | 2025-09-30 |
| 2025-11-14 | 13G/Ano. 1 | Mohan Jitendraindividual | 9.2M | 5.4% | 2025-09-30 |
13F holders
Tracked managers holding ALAB at their latest 13F. JSON7 of the 30 tracked managers held ALAB at their latest 13F, $757.3M in total at quarter-end prices. D. E. Shaw & Co. is the largest at $328.6M (0.2% of its portfolio) as of 2026-06-30. Over the prior quarter 3 added shares and 4 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| D. E. Shaw & Co. | 2026-06-30 | 680K | $328.6M | 0.16% | -839K |
| Millennium Management | 2026-06-30 | 604K | $292.0M | 0.11% | +384K |
| Renaissance Technologies | 2026-06-30 | 153K | $74.1M | 0.10% | +24K |
| AQR Capital Management | 2026-06-30 | 67K | $32.4M | 0.01% | -21K |
| Two Sigma Investments | 2026-06-30 | 48K | $23.2M | 0.02% | -696K |
| Point72 Asset Management | 2026-06-30 | 14K | $6.5M | 0.01% | new |
| Bridgewater Associates | 2026-06-30 | 992 | $479K | 0.00% | -750K |
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.
What this page is
Astera Labs 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 Astera Labs (ALAB), SEC CIK 1736297, 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 2026-09-30.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 2026-10-07.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 2026-10-07.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
- 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 2026-08-04.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 2026-10-07.JSON and CSV
- Company record
- EDGAR filing index for CIK 1736297Ticker, 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 ALAB is sold short?
8,015,331 shares were held short at the 2026-10-15 settlement, 1.8 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 ALAB's daily short volume?
On 2026-10-28, 659,037 of the 1,303,311 ALAB shares reported to FINRA were sold short, 50.6% of the day's reported volume. Short volume is a flow for one day, not a position.
Does ALAB have fails to deliver?
The SEC's latest file shows 3,282 ALAB shares failed to deliver at settlement 2026-09-30. Fails are reported per settlement date and published twice a month with a lag.
Are ALAB insiders buying or selling?
Insiders at ALAB reported 102 open-market sells worth $127.3M in the last 90 days and no open-market buys. Latest filing: Dyckerhoff Stefan A (Director) on 2026-10-07.
Have ALAB insiders filed to sell?
49 Form 144 notices on file for ALAB worth $782.2M at the prices reported; 6 in the last 90 days worth $116.9M. Latest: Dyckerhoff Stefan A filed on 2026-10-07 to sell 12,499 shares ($4.7M) from 2026-10-07.
Who owns 5% or more of ALAB?
4 holders report 5% or more of ALAB in their latest filing, all on Schedule 13G (passive). The largest reported stake is Abigail P. Johnson at 9.1% of the class (15,774,196 shares), filed 2026-10-07 for an event on 2026-09-30.
Which tracked 13F managers own ALAB?
7 of the 30 tracked 13F managers held ALAB shares at their latest filing, $757.3M in all. The largest: D. E. Shaw & Co. (680K shares, $328.6M), Izzy Englander's Millennium Management (604K shares, $292.0M), Renaissance Technologies (153K shares, $74.1M), Cliff Asness's AQR Capital Management (67K shares, $32.4M), Two Sigma Investments (48K shares, $23.2M), Steve Cohen's Point72 Asset Management (14K shares, $6.5M). The table above lists all 7.
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.