Halozyme Therapeutics (HALO)
Halozyme Therapeutics 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 biological products, (no diagnostic substances).
13.7M
Short interest
settlement 2026-10-15
6.2
Days to cover
+1.6 days vs prior
57.0%
Short share of volume
2026-10-28
64
Fails to deliver
settlement 2026-09-29
Mon 2 Nov
Next earnings
estimated date
-$22.1M
Insider flow, 90 days
0 buys, 39 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 HALO is 13,654,228 shares, down 1,500,186 shares over the last month. Over the last 48 readings it ranged from 8,566,431 shares (29 November 2024) to 15,295,841 shares (30 September 2026). At the reported average volume of 2.2M shares a day that is 6.2 days to cover.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 13,654,228 | -10.7% | 2,216,627 | 6.16 |
| 2026-09-30 | 15,295,841 | +0.9% | 3,366,912 | 4.54 |
| 2026-09-15 | 15,154,414 | +1.8% | 1,307,689 | 11.59 |
| 2026-08-31 | 14,880,707 | +1.7% | 1,712,268 | 8.69 |
| 2026-08-14 | 14,636,927 | +4.4% | 2,919,803 | 5.01 |
| 2026-07-31 | 14,022,134 | +5.5% | 1,679,119 | 8.35 |
| 2026-07-15 | 13,295,961 | +0.5% | 1,828,707 | 7.27 |
| 2026-06-30 | 13,226,223 | +2.1% | 2,108,787 | 6.27 |
| 2026-06-15 | 12,948,289 | -5.1% | 1,652,526 | 7.84 |
| 2026-05-29 | 13,644,245 | +1.9% | 1,680,327 | 8.12 |
| 2026-05-15 | 13,389,887 | -6.9% | 1,991,771 | 6.72 |
| 2026-04-30 | 14,381,741 | +0.9% | 1,407,549 | 10.22 |
| 2026-04-15 | 14,257,845 | +1.5% | 1,348,999 | 10.57 |
| 2026-03-31 | 14,046,350 | +2.5% | 1,493,288 | 9.41 |
| 2026-03-13 | 13,701,015 | +1.5% | 1,630,424 | 8.40 |
| 2026-02-27 | 13,498,344 | -2.1% | 2,199,321 | 6.14 |
| 2026-02-13 | 13,795,570 | +2.1% | 2,134,102 | 6.46 |
| 2026-01-30 | 13,515,827 | -0.6% | 1,490,869 | 9.07 |
| 2026-01-15 | 13,593,503 | -1.5% | 2,227,816 | 6.10 |
| 2025-12-31 | 13,800,472 | +10.4% | 1,395,958 | 9.89 |
| 2025-12-15 | 12,500,858 | +1.0% | 2,816,317 | 4.44 |
| 2025-11-28 | 12,372,896 | -0.8% | 2,042,714 | 6.06 |
| 2025-11-14 | 12,479,411 | +10.4% | 3,188,411 | 3.91 |
| 2025-10-31 | 11,305,141 | -1.8% | 1,477,599 | 7.65 |
| 2025-10-15 | 11,510,110 | +6.6% | 2,398,287 | 4.80 |
| 2025-09-30 | 10,797,290 | -8.3% | 2,208,182 | 4.89 |
| 2025-09-15 | 11,779,854 | -0.9% | 1,836,341 | 6.41 |
| 2025-08-29 | 11,883,269 | +12.4% | 2,069,526 | 5.74 |
| 2025-08-15 | 10,571,710 | +6.4% | 2,285,628 | 4.63 |
| 2025-07-31 | 9,932,500 | +3.4% | 1,249,951 | 7.95 |
| 2025-07-15 | 9,602,474 | -5.6% | 1,558,889 | 6.16 |
| 2025-06-30 | 10,176,028 | -8.0% | 4,223,614 | 2.41 |
| 2025-06-13 | 11,065,499 | +4.9% | 1,648,108 | 6.71 |
| 2025-05-30 | 10,551,963 | -1.3% | 2,027,055 | 5.21 |
| 2025-05-15 | 10,690,600 | +13.0% | 4,533,203 | 2.36 |
| 2025-04-30 | 9,462,038 | -1.6% | 1,291,786 | 7.32 |
| 2025-04-15 | 9,619,716 | +4.3% | 1,800,888 | 5.34 |
| 2025-03-31 | 9,221,727 | -8.4% | 1,682,855 | 5.48 |
| 2025-03-14 | 10,069,735 | +3.3% | 1,455,005 | 6.92 |
| 2025-02-28 | 9,748,013 | +5.7% | 1,365,287 | 7.14 |
| 2025-02-14 | 9,221,430 | +1.8% | 977,109 | 9.44 |
| 2025-01-31 | 9,055,762 | -3.7% | 1,072,280 | 8.45 |
| 2025-01-15 | 9,405,294 | -1.1% | 1,757,468 | 5.35 |
| 2024-12-31 | 9,504,876 | +8.1% | 1,532,701 | 6.20 |
| 2024-12-13 | 8,789,545 | +2.6% | 1,016,508 | 8.65 |
| 2024-11-29 | 8,566,431 | -18.0% | 2,558,102 | 3.35 |
| 2024-11-15 | 10,450,111 | +2.0% | 2,203,379 | 4.74 |
| 2024-10-31 | 10,249,324 | -1.6% | 1,028,448 | 9.97 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 28 October 2026, the short share of HALO volume is 57.0%, down 17.6 points over the last five sessions. Over the last 30 readings it ranged from 45.4% (6 October 2026) to 92.3% (18 September 2026). The latest reading is 5.7 points below the 30-session average of 62.7%, on 591K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-10-28 | 336K | 591K | 57.0% | 0 |
| 2026-10-27 | 306K | 599K | 51.0% | 787 |
| 2026-10-26 | 300K | 522K | 57.4% | 2,174 |
| 2026-10-23 | 400K | 766K | 52.2% | 524 |
| 2026-10-22 | 1.5M | 2.2M | 67.4% | 133 |
| 2026-10-21 | 700K | 939K | 74.5% | 17,031 |
| 2026-10-20 | 590K | 1.2M | 49.3% | 810 |
| 2026-10-19 | 824K | 1.1M | 73.1% | 12,946 |
| 2026-10-16 | 525K | 917K | 57.3% | 25,826 |
| 2026-10-15 | 781K | 1.2M | 62.8% | 60 |
| 2026-10-14 | 1.2M | 1.9M | 62.4% | 52,958 |
| 2026-10-13 | 531K | 897K | 59.2% | 16,759 |
| 2026-10-12 | 587K | 977K | 60.1% | 400 |
| 2026-10-09 | 771K | 1.1M | 72.6% | 14,300 |
| 2026-10-08 | 962K | 1.3M | 71.8% | 25,670 |
| 2026-10-07 | 521K | 1.0M | 51.2% | 17,433 |
| 2026-10-06 | 302K | 666K | 45.4% | 4,018 |
| 2026-10-05 | 248K | 494K | 50.3% | 21,084 |
| 2026-10-02 | 646K | 956K | 67.6% | 13 |
| 2026-10-01 | 718K | 1.2M | 62.2% | 3,969 |
| 2026-09-30 | 838K | 1.3M | 66.1% | 190,749 |
| 2026-09-29 | 346K | 685K | 50.5% | 1,021 |
| 2026-09-28 | 580K | 830K | 69.8% | 43,300 |
| 2026-09-25 | 964K | 1.2M | 78.4% | 24,710 |
| 2026-09-24 | 888K | 1.5M | 58.7% | 69,755 |
| 2026-09-23 | 1.1M | 1.7M | 63.6% | 489 |
| 2026-09-22 | 1.6M | 2.2M | 75.2% | 31,844 |
| 2026-09-21 | 1.3M | 1.8M | 74.6% | 9,777 |
| 2026-09-18 | 6.4M | 7.0M | 92.3% | 119,483 |
| 2026-09-17 | 327K | 716K | 45.6% | 552 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 29 September 2026, the fails-to-deliver balance in HALO is 64 shares, down 1,300 shares over the last settlement date. Over the last 30 readings it ranged from 6 shares (18 June 2026) to 24,256 shares (29 June 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-09-29 | 64 | $112.89 | $7K |
| 2026-09-23 | 1,364 | $115.13 | $157K |
| 2026-09-21 | 20,214 | $112.45 | $2.3M |
| 2026-09-17 | 122 | $108.44 | $13K |
| 2026-08-31 | 395 | $105.35 | $42K |
| 2026-08-28 | 7,839 | $106.92 | $838K |
| 2026-08-25 | 22,676 | $108.64 | $2.5M |
| 2026-08-18 | 3,853 | $103.00 | $397K |
| 2026-08-17 | 704 | $98.66 | $69K |
| 2026-08-13 | 14 | $101.79 | $1K |
| 2026-08-10 | 871 | $103.12 | $90K |
| 2026-08-07 | 4,876 | $85.76 | $418K |
| 2026-08-06 | 41 | $83.59 | $3K |
| 2026-08-05 | 108 | $83.23 | $9K |
| 2026-08-03 | 305 | $82.54 | $25K |
| 2026-07-31 | 1,515 | $83.30 | $126K |
| 2026-07-30 | 4,780 | $83.28 | $398K |
| 2026-07-23 | 50 | $77.82 | $4K |
| 2026-07-22 | 138 | $78.60 | $11K |
| 2026-07-21 | 18,373 | $77.09 | $1.4M |
| 2026-07-17 | 261 | $77.54 | $20K |
| 2026-07-15 | 17,716 | $75.05 | $1.3M |
| 2026-07-09 | 750 | $80.37 | $60K |
| 2026-07-06 | 4,643 | $79.45 | $369K |
| 2026-06-29 | 24,256 | $74.96 | $1.8M |
| 2026-06-26 | 8,279 | $72.64 | $601K |
| 2026-06-25 | 3,517 | $71.15 | $250K |
| 2026-06-24 | 3,233 | $69.62 | $225K |
| 2026-06-18 | 6 | $68.57 | $411 |
| 2026-06-15 | 129 | $69.50 | $9K |
Insider trades
SEC Form 4, newest first. JSONInsiders at HALO reported 39 open-market sells worth $22.1M in the last 90 days and no open-market buys. Latest filing: Torley Helen (PRESIDENT AND CEO) on 2026-10-08.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-10-08 | Torley Helen | PRESIDENT AND CEO | Sell | 200 | $110.51 | $22K | 768K |
| 2026-10-08 | Torley Helen | PRESIDENT AND CEO | Sell | 12K | $110.00 | $1.3M | 768K |
| 2026-10-08 | Torley Helen | PRESIDENT AND CEO | Sell | 3K | $108.91 | $337K | 780K |
| 2026-10-08 | Torley Helen | PRESIDENT AND CEO | Sell | 5K | $108.18 | $520K | 783K |
| 2026-10-08 | Torley Helen | PRESIDENT AND CEO | Exercise or conversion | 20K | $18.41 | $368K | 788K |
| 2026-10-07 | Torley Helen | PRESIDENT AND CEO | Sell | 200 | $113.69 | $23K | 768K |
| 2026-10-07 | Torley Helen | PRESIDENT AND CEO | Sell | 900 | $112.78 | $102K | 768K |
| 2026-10-07 | Torley Helen | PRESIDENT AND CEO | Sell | 10K | $111.84 | $1.2M | 769K |
| 2026-10-07 | Torley Helen | PRESIDENT AND CEO | Sell | 9K | $111.03 | $955K | 779K |
| 2026-10-07 | Torley Helen | PRESIDENT AND CEO | Exercise or conversion | 20K | $18.41 | $368K | 788K |
| 2026-10-06 | Torley Helen | PRESIDENT AND CEO | Sell | 2K | $110.81 | $197K | 768K |
| 2026-10-06 | Torley Helen | PRESIDENT AND CEO | Sell | 10K | $109.89 | $1.1M | 770K |
| 2026-10-06 | Torley Helen | PRESIDENT AND CEO | Sell | 6K | $109.33 | $656K | 779K |
| 2026-10-06 | Torley Helen | PRESIDENT AND CEO | Sell | 2K | $107.90 | $248K | 785K |
| 2026-10-06 | Torley Helen | PRESIDENT AND CEO | Exercise or conversion | 20K | $18.41 | $368K | 788K |
| 2026-10-01 | Posard Matthew L. | Director | Sell | 100 | $110.04 | $11K | 54K |
| 2026-10-01 | Posard Matthew L. | Director | Sell | 1K | $109.57 | $121K | 54K |
| 2026-10-01 | Posard Matthew L. | Director | Sell | 3K | $108.45 | $358K | 55K |
| 2026-10-01 | Posard Matthew L. | Director | Sell | 730 | $107.17 | $78K | 58K |
| 2026-10-01 | Daly James M | Director | Grant | 1K | $0.00 | $0 | 1K |
| 2026-09-16 | Posard Matthew L. | Director | Sell | 4K | $108.99 | $436K | 59K |
| 2026-09-16 | Posard Matthew L. | Director | Sell | 9K | $108.04 | $961K | 63K |
| 2026-09-16 | Posard Matthew L. | Director | Sell | 3K | $106.83 | $320K | 72K |
| 2026-09-16 | Posard Matthew L. | Director | Sell | 3K | $106.13 | $329K | 75K |
| 2026-09-11 | Torley Helen | PRESIDENT AND CEO | Sell | 5K | $107.55 | $485K | 768K |
| 2026-09-11 | Torley Helen | PRESIDENT AND CEO | Sell | 15K | $107.15 | $1.7M | 772K |
| 2026-09-11 | Torley Helen | PRESIDENT AND CEO | Exercise or conversion | 20K | $18.41 | $368K | 788K |
| 2026-09-10 | Torley Helen | PRESIDENT AND CEO | Sell | 5K | $107.58 | $582K | 768K |
| 2026-09-10 | Torley Helen | PRESIDENT AND CEO | Sell | 15K | $107.01 | $1.6M | 773K |
| 2026-09-10 | Torley Helen | PRESIDENT AND CEO | Exercise or conversion | 20K | $18.41 | $368K | 788K |
| 2026-09-09 | Torley Helen | PRESIDENT AND CEO | Sell | 100 | $108.67 | $11K | 768K |
| 2026-09-09 | Torley Helen | PRESIDENT AND CEO | Sell | 7K | $107.82 | $711K | 768K |
| 2026-09-09 | Torley Helen | PRESIDENT AND CEO | Sell | 13K | $107.22 | $1.4M | 774K |
| 2026-09-09 | Torley Helen | PRESIDENT AND CEO | Exercise or conversion | 20K | $18.41 | $368K | 788K |
| 2026-09-01 | Appelhans Dannielle | Director | Grant | 1K | $0.00 | $0 | 1K |
| 2026-08-19 | Torley Helen | PRESIDENT AND CEO | Sell | 3K | $107.77 | $345K | 768K |
| 2026-08-19 | Torley Helen | PRESIDENT AND CEO | Sell | 10K | $107.22 | $1.0M | 771K |
| 2026-08-19 | Torley Helen | PRESIDENT AND CEO | Sell | 7K | $106.36 | $766K | 781K |
| 2026-08-19 | Torley Helen | PRESIDENT AND CEO | Exercise or conversion | 20K | $18.41 | $368K | 788K |
| 2026-08-18 | Torley Helen | PRESIDENT AND CEO | Sell | 9K | $104.87 | $986K | 768K |
| 2026-08-18 | Torley Helen | PRESIDENT AND CEO | Sell | 5K | $104.11 | $510K | 777K |
| 2026-08-18 | Torley Helen | PRESIDENT AND CEO | Sell | 6K | $103.08 | $588K | 782K |
| 2026-08-18 | Torley Helen | PRESIDENT AND CEO | Exercise or conversion | 20K | $18.41 | $368K | 788K |
| 2026-08-17 | Torley Helen | PRESIDENT AND CEO | Sell | 8K | $103.48 | $776K | 768K |
| 2026-08-17 | Torley Helen | PRESIDENT AND CEO | Sell | 9K | $102.55 | $923K | 775K |
| 2026-08-17 | Torley Helen | PRESIDENT AND CEO | Sell | 2K | $101.77 | $214K | 784K |
| 2026-08-17 | Torley Helen | PRESIDENT AND CEO | Sell | 500 | $100.46 | $50K | 786K |
| 2026-08-17 | Torley Helen | PRESIDENT AND CEO | Sell | 900 | $98.96 | $89K | 787K |
| 2026-08-17 | Torley Helen | PRESIDENT AND CEO | Exercise or conversion | 20K | $18.41 | $368K | 788K |
| 2026-08-10 | Connaughton Bernadette | Director | Sell | 2K | $102.80 | $167K | 40K |
| 2026-07-08 | Torley Helen | PRESIDENT AND CEO | Sell | 1K | $80.19 | $83K | 768K |
| 2026-07-08 | Torley Helen | PRESIDENT AND CEO | Sell | 888 | $79.28 | $70K | 769K |
| 2026-07-08 | Torley Helen | PRESIDENT AND CEO | Exercise or conversion | 2K | $12.07 | $23K | 770K |
| 2026-07-01 | Connaughton Bernadette | Director | Sell | 625 | $77.21 | $48K | 42K |
| 2026-07-01 | Connaughton Bernadette | Director | Sell | 1K | $76.39 | $76K | 43K |
| 2026-06-30 | RAMSAY DAVID A | EVP, PRESIDENT, DRUG DELIVERY | Tax withholding | 5K | $78.27 | $423K | 5K |
| 2026-06-30 | RAMSAY DAVID A | EVP, PRESIDENT, DRUG DELIVERY | Exercise or conversion | 10K | $0.00 | $0 | 10K |
| 2026-06-29 | Krishnan Mahesh | Director | Sell | 7K | $75.00 | $548K | 14K |
| 2026-06-29 | Krishnan Mahesh | Director | Exercise or conversion | 7K | $38.46 | $281K | 22K |
| 2026-06-12 | Snyder Mark Howard | SVP, CHIEF LEGAL OFFICER | Exercise or conversion | 5K | $0.00 | $0 | 53K |
| 2026-06-12 | Snyder Mark Howard | SVP, CHIEF LEGAL OFFICER | Tax withholding | 3K | $69.50 | $189K | 50K |
| 2026-06-03 | Torley Helen | PRESIDENT AND CEO | Sell | 6K | $69.69 | $425K | 768K |
| 2026-06-03 | Torley Helen | PRESIDENT AND CEO | Sell | 2K | $68.74 | $137K | 774K |
| 2026-06-03 | Torley Helen | PRESIDENT AND CEO | Sell | 2K | $67.67 | $102K | 776K |
| 2026-06-03 | Torley Helen | PRESIDENT AND CEO | Sell | 400 | $66.37 | $27K | 777K |
| 2026-06-03 | Torley Helen | PRESIDENT AND CEO | Exercise or conversion | 10K | $12.07 | $121K | 778K |
| 2026-06-02 | Torley Helen | PRESIDENT AND CEO | Sell | 3K | $66.75 | $227K | 768K |
| 2026-06-02 | Torley Helen | PRESIDENT AND CEO | Sell | 17K | $66.31 | $1.1M | 771K |
| 2026-06-02 | Torley Helen | PRESIDENT AND CEO | Exercise or conversion | 20K | $12.07 | $241K | 788K |
| 2026-06-01 | Connaughton Bernadette | Director | Sell | 2K | $66.21 | $108K | 44K |
| 2026-06-01 | Torley Helen | PRESIDENT AND CEO | Sell | 5K | $68.35 | $369K | 768K |
| 2026-06-01 | Torley Helen | PRESIDENT AND CEO | Sell | 13K | $67.41 | $876K | 773K |
| 2026-06-01 | Torley Helen | PRESIDENT AND CEO | Sell | 2K | $66.39 | $107K | 786K |
| 2026-06-01 | Torley Helen | PRESIDENT AND CEO | Exercise or conversion | 20K | $12.07 | $241K | 788K |
| 2026-05-13 | Torley Helen | PRESIDENT AND CEO | Sell | 600 | $70.81 | $42K | 768K |
| 2026-05-13 | Torley Helen | PRESIDENT AND CEO | Sell | 4K | $69.79 | $276K | 768K |
| 2026-05-13 | Torley Helen | PRESIDENT AND CEO | Sell | 3K | $68.88 | $231K | 772K |
| 2026-05-13 | Torley Helen | PRESIDENT AND CEO | Sell | 2K | $68.10 | $143K | 776K |
| 2026-05-13 | Torley Helen | PRESIDENT AND CEO | Exercise or conversion | 10K | $12.07 | $121K | 778K |
| 2026-05-12 | Torley Helen | PRESIDENT AND CEO | Sell | 3K | $73.12 | $205K | 768K |
| 2026-05-12 | Torley Helen | PRESIDENT AND CEO | Sell | 6K | $72.15 | $426K | 771K |
| 2026-05-12 | Torley Helen | PRESIDENT AND CEO | Sell | 10K | $71.37 | $700K | 776K |
| 2026-05-12 | Torley Helen | PRESIDENT AND CEO | Sell | 1K | $70.29 | $98K | 786K |
| 2026-05-12 | Torley Helen | PRESIDENT AND CEO | Sell | 100 | $67.85 | $7K | 788K |
| 2026-05-12 | Torley Helen | PRESIDENT AND CEO | Exercise or conversion | 20K | $12.07 | $241K | 788K |
| 2026-05-11 | Torley Helen | PRESIDENT AND CEO | Sell | 7K | $66.33 | $444K | 768K |
| 2026-05-11 | Torley Helen | PRESIDENT AND CEO | Sell | 4K | $65.46 | $234K | 774K |
| 2026-05-11 | Torley Helen | PRESIDENT AND CEO | Sell | 10K | $64.63 | $629K | 778K |
| 2026-05-11 | Torley Helen | PRESIDENT AND CEO | Exercise or conversion | 20K | $12.07 | $241K | 788K |
| 2026-05-05 | Posard Matthew L. | Director | Grant | 4K | $0.00 | $0 | 78K |
| 2026-05-05 | Krishnan Mahesh | Director | Grant | 4K | $0.00 | $0 | 14K |
| 2026-05-05 | Lang James Paul | Director | Grant | 4K | $0.00 | $0 | 5K |
| 2026-05-05 | Henderson Jeffrey William | Director | Grant | 4K | $0.00 | $0 | 37K |
| 2026-05-05 | DUNCAN BARBARA GAYLE | Director | Grant | 4K | $0.00 | $0 | 24K |
| 2026-05-05 | Connaughton Bernadette | Director | Grant | 7K | $0.00 | $0 | 45K |
| 2026-05-01 | Connaughton Bernadette | Director | Sell | 2K | $63.48 | $103K | 38K |
| 2026-04-06 | Torley Helen | PRESIDENT AND CEO | Sell | 4K | $64.02 | $262K | 768K |
| 2026-04-06 | Torley Helen | PRESIDENT AND CEO | Sell | 6K | $63.14 | $373K | 772K |
| 2026-04-06 | Torley Helen | PRESIDENT AND CEO | Exercise or conversion | 10K | $12.07 | $121K | 778K |
| 2026-04-02 | Torley Helen | PRESIDENT AND CEO | Sell | 4K | $64.89 | $273K | 768K |
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. JSON11 Form 144 notices on file for HALO worth $33.2M at the prices reported; 3 in the last 90 days worth $8.1M. Latest: MATTHEW POSARD filed on 2026-09-16 to sell 34,226 shares ($3.6M) from 2026-09-16.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-09-16 | MATTHEW POSARDDirector | 34K | $3.6M | 0.030% | 2026-09-16 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-11 | CORTNEY A CAUDILLOfficer | 42K | $4.3M | 0.037% | 2026-08-11 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-10 | BERNADETTE CONNAUGHTONDirector | 2K | $168K | 0.001% | 2026-08-10 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-06-29 | MAHESH KRISHNANDirector | 7K | $548K | 0.006% | 2026-06-29 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-15 | NICOLE LABROSSEFormer Officer | 15K | $987K | 0.012% | 2026-05-15 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-05-01 | BERNADETTE CONNAUGHTONDirector | 5K | $310K | 0.004% | 2026-05-01 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-03-10 | CORTNEY A CAUDILLOfficer | 9K | $599K | 0.008% | 2026-03-10 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-03-09 | CORTNEY A CAUDILLOfficer | 20K | $1.4M | 0.017% | 2026-03-09 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-02-03 | Helen TorleyPresident, CEO, Director | 150K | $11.2M | 0.128% | 2026-02-03 | J.P. Morgan Securities LLC |
| 2026-01-05 | BERNADETTE CONNAUGHTONDirector | 2K | $141K | 0.002% | 2026-01-05 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-10-01 | Helen TorleyPresident, CEO, Director | 137K | $10.0M | 0.117% | 2025-10-01 | J.P. Morgan Securities LLC |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON1 holder reports 5% or more of HALO in its latest filing, on Schedule 13G (passive). The holder is Vanguard Capital Management at 5.2% of the class (6,173,547 shares), filed 2026-04-30 for an event on 2026-03-31.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-04-30 | 13G | Vanguard Capital Managementinvestment adviser | 6.2M | 5.2% | 2026-03-31 |
| 2026-03-27 | 13G/Ano. 13 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
13F holders
Tracked managers holding HALO at their latest 13F. JSON8 of the 30 tracked managers held HALO at their latest 13F, $479.4M in total at quarter-end prices. D. E. Shaw & Co. is the largest at $157.0M (0.1% of its portfolio) as of 2026-06-30. Over the prior quarter 3 added shares and 5 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| D. E. Shaw & Co. | 2026-06-30 | 2.0M | $157.0M | 0.07% | +138K |
| Two Sigma Investments | 2026-06-30 | 1.7M | $129.4M | 0.09% | +68K |
| AQR Capital Management | 2026-06-30 | 786K | $61.5M | 0.02% | -231K |
| Renaissance Technologies | 2026-06-30 | 480K | $37.5M | 0.05% | -252K |
| Bridgewater Associates | 2026-06-30 | 463K | $36.3M | 0.15% | -48K |
| Fisher Asset Management | 2026-06-30 | 428K | $33.5M | 0.01% | -17K |
| Citadel Advisors | 2026-06-30 | 289K | $22.6M | 0.00% | +98K |
| Millennium Management | 2026-06-30 | 20K | $1.6M | 0.00% | -451K |
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) Halozyme Therapeutics reported revenue of $481.0M, up 47.7% from the same quarter a year earlier, and net income of $229.9M (1.90 diluted EPS). In FY 2025 it generated $651.6M of operating cash flow and spent $342.4M on buybacks. As of 2026-06-30, cash was $163.1M against $1.94B of debt.
- Cash
- $163.1M
- Debt
- $1.94B
- Equity
- $143.5M
- Total assets
- $2.58B
- Shares outstanding
- 113,498,000
Quarterly, last 8 quarters
| Quarter | Period end | Revenue | Net income | Margin | Diluted EPS |
|---|---|---|---|---|---|
| Q2 FY 2026 | 2026-06-30 | $481.0M | $229.9M | 47.8% | 1.90 |
| Q1 FY 2026 | 2026-03-31 | $376.7M | $150.0M | 39.8% | 1.22 |
| Q4 FY 2025derived | 2025-12-31 | $451.8M | -$141.6M | -31.3% | n/a |
| Q3 FY 2025 | 2025-09-30 | $354.3M | $175.2M | 49.5% | 1.43 |
| Q2 FY 2025 | 2025-06-30 | $325.7M | $165.2M | 50.7% | 1.33 |
| Q1 FY 2025 | 2025-03-31 | $264.9M | $118.1M | 44.6% | 0.93 |
| Q4 FY 2024derived | 2024-12-31 | $298.0M | $137.0M | 46.0% | n/a |
| Q3 FY 2024 | 2024-09-30 | $290.1M | $137.0M | 47.2% | 1.05 |
Fiscal years, with buybacks and dividends
| Fiscal year | Ends | Revenue | Net income | Operating cash flow | Capex | Buybacks | Dividends |
|---|---|---|---|---|---|---|---|
| FY 2025 | 2025-12-31 | $1.40B | $316.9M | $651.6M | $7.0M | $342.4M | n/a |
| FY 2024 | 2024-12-31 | $1.02B | $444.1M | $479.1M | $10.7M | $250.0M | n/a |
| FY 2023 | 2023-12-31 | $829.3M | $281.6M | $388.6M | $15.3M | $402.4M | n/a |
| FY 2022 | 2022-12-31 | $660.1M | $202.1M | $240.1M | $4.8M | $200.0M | n/a |
| FY 2021 | 2021-12-31 | $443.3M | $402.7M | $299.4M | $1.5M | $350.1M | 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 2026-07-31 from the cover page.
What this page is
Halozyme Therapeutics 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 Halozyme Therapeutics (HALO), SEC CIK 1159036, listed on Nasdaq, classified by the SEC as biological products, (no diagnostic substances). 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 2026-09-16.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 2026-04-30.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 2026-10-08.JSON and CSV
- Company record
- EDGAR filing index for CIK 1159036Ticker, 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 biological products, (no diagnostic substances)
Other company pages
Datasets
Frequently Asked Questions
How much of HALO is sold short?
13,654,228 shares were held short at the 2026-10-15 settlement, 6.2 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 HALO's daily short volume?
On 2026-10-28, 336,408 of the 590,656 HALO shares reported to FINRA were sold short, 57.0% of the day's reported volume. Short volume is a flow for one day, not a position.
Does HALO have fails to deliver?
The SEC's latest file shows 64 HALO shares failed to deliver at settlement 2026-09-29. Fails are reported per settlement date and published twice a month with a lag.
Are HALO insiders buying or selling?
Insiders at HALO reported 39 open-market sells worth $22.1M in the last 90 days and no open-market buys. Latest filing: Torley Helen (PRESIDENT AND CEO) on 2026-10-08.
Have HALO insiders filed to sell?
11 Form 144 notices on file for HALO worth $33.2M at the prices reported; 3 in the last 90 days worth $8.1M. Latest: MATTHEW POSARD filed on 2026-09-16 to sell 34,226 shares ($3.6M) from 2026-09-16.
Who owns 5% or more of HALO?
1 holder reports 5% or more of HALO in its latest filing, on Schedule 13G (passive). The holder is Vanguard Capital Management at 5.2% of the class (6,173,547 shares), filed 2026-04-30 for an event on 2026-03-31.
What did HALO report last quarter?
In Q2 FY 2026 (quarter ended 2026-06-30) Halozyme Therapeutics reported revenue of $481.0M, up 47.7% from the same quarter a year earlier, and net income of $229.9M (1.90 diluted EPS). In FY 2025 it generated $651.6M of operating cash flow and spent $342.4M on buybacks. As of 2026-06-30, cash was $163.1M against $1.94B of debt.
Which tracked 13F managers own HALO?
8 of the 30 tracked 13F managers held HALO shares at their latest filing, $479.4M in all. The largest: D. E. Shaw & Co. (2.0M shares, $157.0M), Two Sigma Investments (1.7M shares, $129.4M), Cliff Asness's AQR Capital Management (786K shares, $61.5M), Renaissance Technologies (480K shares, $37.5M), Ray Dalio's Bridgewater Associates (463K shares, $36.3M), Ken Fisher's Fisher Asset Management (428K shares, $33.5M). The table above lists all 8.
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.