PUMA BIOTECHNOLOGY INC (PBYI)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
Institutions report 38,670,173 shares against 51,620,066 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| ACORN CAPITAL ADVISORS, LLC | $33.5M | 4,131,299 | 9.14% | 7q | HELD |
| BlackRock, Inc. | $30.9M | 3,804,736 | 0.00% | 8q | +5.7%+$1.7M |
| AMERICAN CENTURY COMPANIES INC | $18.8M | 2,319,996 | 0.01% | 11q | +21.1%+$3.3M |
| ACADIAN ASSET MANAGEMENT LLC | $16.6M | 2,053,523 | 0.02% | 30q | +0.6%+$95.4K |
| RENAISSANCE TECHNOLOGIES LLC | $14.9M | 1,836,213 | 0.02% | 27q | -5.5%-$861.3K |
| VANGUARD CAPITAL MANAGEMENT LLC | $14.9M | 1,835,643 | 0.00% | 2q | +1.0%+$145.7K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $14.8M | 1,825,599 | 0.00% | 2q | +5.2%+$737.6K |
| LSV ASSET MANAGEMENT | $13.1M | 1,617,981 | 0.02% | 16q | +36.8%+$3.5M |
| DIMENSIONAL FUND ADVISORS LP | $12.3M | 1,518,014 | 0.00% | 16q | +5.7%+$664.3K |
| GEODE CAPITAL MANAGEMENT, LLC | $10.9M | 1,339,405 | 0.00% | 31q | +31.7%+$2.6M |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC | $9.1M | 1,123,783 | 0.04% | 11q | -1.3%-$116.7K |
| STATE STREET CORP | $7.7M | 952,165 | 0.00% | 31q | +3.8%+$280.4K |
| KENNEDY CAPITAL MANAGEMENT LLC | $7.1M | 873,253 | 0.13% | 8q | -1.8%-$132.6K |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | $6.4M | 791,616 | 0.11% | 19q | +2.1%+$132.0K |
| RITHOLTZ WEALTH MANAGEMENT | $6.1M | 749,798 | 0.09% | 5q | -3.2%-$198.8K |
| AQR CAPITAL MANAGEMENT LLC | $5.9M | 725,192 | 0.00% | 7q | -9.4%-$608.3K |
| GOLDMAN SACHS GROUP INC | $5.4M | 669,156 | 0.00% | 31q | HELD |
| NORTHERN TRUST CORP | $5.3M | 652,386 | 0.00% | 31q | +1.7%+$86.2K |
| Connor, Clark & Lunn Investment Management Ltd. | $5.2M | 642,946 | 0.01% | 19q | -17.9%-$1.1M |
| UBS Group AG | $5.2M | 636,761 | 0.00% | 31q | +19.2%+$831.6K |
| MILLENNIUM MANAGEMENT LLC | $4.9M | 602,240 | 0.00% | 31q | -59.2%-$7.1M |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $4.3M | 532,450 | 0.00% | 6q | -1.1%-$46.3K |
| SEI INVESTMENTS CO | $3.4M | 418,669 | 0.00% | 31q | -17.6%-$726.0K |
| GLOBEFLEX CAPITAL L P | $3.1M | 382,807 | 0.40% | 25q | +9.5%+$268.9K |
| Bank of New York Mellon Corp | $2.9M | 360,734 | 0.00% | 31q | +3.7%+$104.2K |
| D. E. Shaw & Co., Inc. | $2.6M | 316,343 | 0.00% | 8q | -9.9%-$283.0K |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM | $2.5M | 309,106 | 0.00% | 3q | +13.3%+$293.7K |
| Invesco Ltd. | $2.4M | 301,002 | 0.00% | 9q | +216.7%+$1.7M |
| Russell Investments Group, Ltd. | $2.2M | 272,234 | 0.00% | 9q | +8.2%+$166.9K |
| VANGUARD FIDUCIARY TRUST CO | $2.2M | 269,070 | 0.00% | 2q | +6.9%+$141.0K |
| MORGAN STANLEY | $2.2M | 265,670 | 0.00% | 35q | -26.1%-$762.9K |
| FEDERATED HERMES, INC. | $2.0M | 250,766 | 0.00% | 31q | +5.5%+$105.8K |
| Empowered Funds, LLC | $1.8M | 220,316 | 0.01% | 5q | +8.0%+$132.0K |
| PANAGORA ASSET MANAGEMENT INC | $1.8M | 217,545 | 0.01% | 5q | +11.6%+$183.8K |
| PRUDENTIAL FINANCIAL INC | $1.7M | 213,599 | 0.00% | 15q | -15.6%-$319.9K |
| JPMORGAN CHASE & CO | $1.7M | 211,339 | 0.00% | 31q | -4.3%-$76.9K |
| FMR LLC | $1.7M | 211,444 | 0.00% | 18q | +10.2%+$159.0K |
| STATE OF WISCONSIN INVESTMENT BOARD | $1.5M | 188,232 | 0.00% | 4q | -9.8%-$165.3K |
| FRANKLIN RESOURCES INC | $1.4M | 172,010 | 0.00% | 8q | -20.1%-$351.8K |
| Prospera Financial Services Inc | $1.3M | 158,762 | 0.02% | 23q | -8.3%-$115.9K |
| Haven Private, LLC | $1.2M | 148,448 | 0.46% | 3q | -4.4%-$55.2K |
| TWO SIGMA INVESTMENTS, LP | $1.1M | 140,587 | 0.00% | 18q | +981.4%+$1.0M |
| FIRST TRUST ADVISORS LP | $1.1M | 130,206 | 0.00% | 4q | +5.4%+$54.3K |
| Round Rock Advisors LLC | $1.0M | 128,912 | 0.13% | 4q | HELD |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $1.0M | 128,243 | 0.00% | 15q | +10.6%+$100.0K |
| WELLINGTON MANAGEMENT GROUP LLP | $1.0M | 126,091 | 0.00% | new | NEW |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $841.6K incl. $716.1K options CALL+PUT | 15,476 | 0.00% | 31q | -3.8%-$33.3K |
| STRS OHIO | $686.1K | 84,600 | 0.00% | 9q | -7.5%-$56.0K |
| Nuveen, LLC | $667.4K | 82,298 | 0.00% | 6q | +4.0%+$25.9K |
| EVERGREEN CAPITAL MANAGEMENT LLC | $598.0K | 73,731 | 0.01% | 5q | -23.2%-$180.6K |
| CANADA PENSION PLAN INVESTMENT BOARD | $596.1K | 73,500 | 0.00% | 3q | +222.4%+$411.2K |
| Trexquant Investment LP | $585.7K | 72,223 | 0.00% | new | NEW |
| Vise Technologies, Inc. | $584.2K | 72,030 | 0.01% | 3q | +78.7%+$257.3K |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | $497.0K | 61,255 | 0.00% | 3q | HELD |
| OpenArc Corporate Advisory, LLC | $482.5K | 59,491 | 0.01% | 3q | -33.5%-$243.3K |
| RHUMBLINE ADVISERS | $466.4K | 57,510 | 0.00% | 13q | +8.4%+$36.3K |
| D'Orazio & Associates, Inc. | $394.8K | 48,680 | 0.05% | 5q | -2.5%-$10.0K |
| Vanguard Global Advisers, LLC | $375.2K | 46,267 | 0.00% | 2q | +58.6%+$138.6K |
| DEUTSCHE BANK AG\ | $350.3K | 43,192 | 0.00% | 2q | +30.3%+$81.5K |
| Man Group plc | $336.6K | 41,506 | 0.00% | 3q | -12.4%-$47.6K |
| WINTON GROUP Ltd | $328.5K | 40,509 | 0.01% | 4q | -38.9%-$209.4K |
| XTX Topco Ltd | $326.8K | 40,296 | 0.00% | 2q | +166.6%+$204.2K |
| State of Wyoming | $323.0K | 39,833 | 0.03% | 4q | -47.5%-$291.8K |
| WELLS FARGO & COMPANY/MN | $305.0K | 37,606 | 0.00% | 31q | +131.1%+$173.0K |
| EntryPoint Capital, LLC | $303.2K | 37,386 | 0.07% | 3q | -30.1%-$130.4K |
| PRICE T ROWE ASSOCIATES INC /MD/ | $295.0K | 36,343 | 0.00% | 8q | +16.1%+$40.9K |
| Baron Wealth Management LLC | $295.0K | 36,372 | 0.08% | 4q | -5.0%-$15.5K |
| Creative Planning | $289.8K | 35,737 | 0.00% | 2q | +54.6%+$102.4K |
| LPL Financial LLC | $280.1K | 34,537 | 0.00% | 11q | -5.7%-$16.9K |
| Universal- Beteiligungs- und Servicegesellschaft mbH | $279.7K | 34,485 | 0.00% | 6q | -12.3%-$39.1K |
| BANK OF AMERICA CORP /DE/ | $257.5K | 31,747 | 0.00% | 31q | -21.3%-$69.9K |
| Kathmere Capital Management, LLC | $252.8K | 31,172 | 0.01% | 5q | +4.7%+$11.3K |
| ENVESTNET ASSET MANAGEMENT INC | $236.7K | 29,190 | 0.00% | 2q | +9.9%+$21.3K |
| Y-Intercept (Hong Kong) Ltd | $212.7K | 26,222 | 0.00% | new | NEW |
| MARTINGALE ASSET MANAGEMENT L P | $205.7K | 25,364 | 0.00% | new | NEW |
| Metis Global Partners, LLC | $204.9K | 25,264 | 0.00% | 10q | HELD |
| MetLife Investment Management, LLC | $201.7K | 24,873 | 0.00% | 6q | +57.0%+$73.2K |
| C2C Wealth Management, LLC | $191.6K | 23,620 | 0.15% | 7q | HELD |
| CITIGROUP INC | $175.7K | 21,666 | 0.00% | 12q | +533.1%+$148.0K |
| PRELUDE CAPITAL MANAGEMENT, LLC | $174.8K | 21,548 | 0.01% | 7q | +16.8%+$25.1K |
| One Wealth Advisors, LLC | $171.0K | 21,079 | 0.02% | 3q | HELD |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $165.3K | 20,383 | 0.00% | 8q | -1.2%-$2.0K |
| BAILARD, INC. | $146.8K | 18,100 | 0.00% | 2q | HELD |
| Allspring Global Investments Holdings, LLC | $143.4K | 17,945 | 0.00% | 2q | +5.2%+$7.0K |
| JANE STREET GROUP, LLC | $141.9K CALL | options only | 0.00% | 5q | OPTIONS |
| Spark Investment Management LLC | $137.9K | 17,000 | 0.27% | new | NEW |
| ALLIANCEBERNSTEIN L.P. | $136.5K | 21,360 | 0.00% | 5q | +54.8%+$48.3K |
| Police & Firemen's Retirement System of New Jersey | $127.5K | 15,719 | 0.00% | 7q | HELD |
| Lido Advisors, LLC | $122.0K | 15,045 | 0.00% | new | NEW |
| Mariner, LLC | $120.6K | 14,869 | 0.00% | 2q | +1.5%+$1.8K |
| Caprock Group, LLC | $112.4K | 13,862 | 0.00% | 5q | -46.7%-$98.4K |
| PERKINS CAPITAL MANAGEMENT INC | $108.7K | 13,400 | 0.08% | 4q | +7.2%+$7.3K |
| TOCQUEVILLE ASSET MANAGEMENT L.P. | $108.0K | 13,312 | 0.00% | 2q | +2.7%+$2.9K |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | $105.6K | 13,203 | 0.00% | 3q | +13.5%+$12.5K |
| OSAIC HOLDINGS, INC. | $98.7K | 12,169 | 0.00% | 26q | +4.3%+$4.1K |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | $97.8K | 12,056 | 0.00% | 6q | +2.5%+$2.4K |
| R Squared Ltd | $97.2K | 11,991 | 0.05% | new | NEW |
| Abel Hall, LLC | $93.4K | 11,520 | 0.02% | 3q | HELD |
| BARCLAYS PLC | $90.8K | 11,202 | 0.00% | 31q | -19.9%-$22.6K |
| IEQ CAPITAL, LLC | $86.5K | 10,671 | 0.00% | 3q | -28.4%-$34.3K |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-10-06 | 13D/A | Alan H. Auerbach INDIVIDUAL | 16.0% |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-14 | Cesano Alessandra | Director | Sold | 62,150 | $567.0K |
| 2026-06-12 | Senderowicz Adrian | Director | Sold | 27,000 | $194.3K |
| 2026-06-12 | MOYES JAY M | Director | Sold | 22,000 | $158.8K |
Ten percent owners and entities
Usually an institution that crossed a reporting threshold, or a company taking a strategic stake, rather than an individual with a view.
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-06 | AUERBACH ALAN H | President and CEO | Sold | 44,058 | $364.1K |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 34 | $7.0M | 708,335 | 5 | 13 | 4 | 0.0% |
| Q2 2026 | 161 | $314.6M | 38,670,173 | 21 | 59 | 51 | 0.3% |
| Q1 2026 | 158 | $242.6M | 37,858,675 | 22 | 55 | 37 | 0.3% |
| Q4 2025 | 155 | $210.9M | 35,345,329 | 31 | 49 | 38 | 0.3% |
| Q3 2025 | 139 | $184.4M | 34,397,997 | 25 | 43 | 37 | 0.9% |
| Q2 2025 | 123 | $113.1M | 32,887,902 | 20 | 41 | 29 | 0.3% |
| Q1 2025 | 119 | $90.2M | 30,426,075 | 24 | 42 | 25 | 0.2% |
| Q4 2024 | 114 | $90.3M | 29,552,033 | 16 | 43 | 20 | 0.2% |
| Q3 2024 | 102 | $76.2M | 29,789,933 | 19 | 32 | 22 | 0.3% |
| Q2 2024 | 99 | $101.5M | 30,982,352 | 23 | 33 | 22 | 0.5% |
| Q1 2024 | 96 | $169.2M | 31,009,977 | 22 | 34 | 25 | 2.9% |
| Q4 2023 | 83 | $118.0M | 27,011,798 | 18 | 29 | 15 | 0.9% |
| Q3 2023 | 70 | $68.8M | 25,704,975 | 6 | 17 | 22 | 1.8% |
| Q2 2023 | 69 | $95.4M | 26,576,480 | 2 | 13 | 24 | 1.7% |
| Q1 2023 | 77 | $87.6M | 27,919,266 | 11 | 28 | 18 | 1.5% |
| Q4 2022 | 88 | $117.4M | 27,496,593 | 23 | 19 | 25 | 0.9% |
| Q3 2022 | 75 | $3.6B | 1,537,799,966 | 6 | 21 | 26 | 0.0% |
| Q2 2022 | 81 | $4.2B | 1,466,520,731 | 14 | 19 | 34 | 0.0% |
| Q1 2022 | 100 | $4.2B | 1,453,138,098 | 16 | 21 | 38 | 0.0% |
| Q4 2021 | 96 | $3.5B | 1,147,371,073 | 15 | 37 | 28 | 0.0% |
| Q3 2021 | 114 | $3.0B | 429,658,801 | 11 | 48 | 35 | 0.0% |
| Q2 2021 | 119 | $320.7M | 34,718,363 | 18 | 45 | 35 | 0.6% |
| Q1 2021 | 115 | $467.3M | 47,924,367 | 11 | 41 | 38 | 0.3% |
| Q4 2020 | 121 | $535.1M | 51,273,593 | 15 | 32 | 43 | 1.6% |
| Q3 2020 | 125 | $490.3M | 48,047,173 | 21 | 34 | 42 | 1.1% |
| Q2 2020 | 126 | $533.9M | 50,608,449 | 27 | 43 | 35 | 1.1% |
| Q1 2020 | 120 | $1.4B | 165,192,274 | 17 | 41 | 41 | 0.5% |
| Q4 2019 | 127 | $378.0M | 41,713,936 | 18 | 55 | 36 | 3.4% |
| Q3 2019 | 137 | $525.0M | 47,433,101 | 31 | 51 | 28 | 2.7% |
| Q2 2019 | 136 | $605.0M | 46,593,352 | 22 | 56 | 29 | 2.1% |
| Q1 2019 | 159 | $1.7B | 43,511,366 | 45 | 49 | 45 | 3.1% |
| Q4 2018 | 135 | $2.1B | 99,722,025 | 1 | 4 | 2 | 0.8% |
