PUMA BIOTECHNOLOGY INC PBYI
COM · Common Stock · CUSIP 74587V107 · ISIN US74587V1070
Pharmaceutical company
- SectorHealth care
- IndustryPharmaceutical Preparations
- HeadquartersLos Angeles, CA
- Websitepumabiotechnology.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($30.1k this quarter). Holder counts are more reliable. Shares outstanding: 47.5m as of 2023-07-31, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $3.53. Options: 8 managers hold calls ($1.4m notional), 5 hold puts ($230.4k).
Trends to Q2 2023
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 83 |
| Q4 2022 | 89 |
| Q1 2023 | 79 |
| Q2 2023 | 69 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2022 | 42 | 39 |
| Q1 2023 | 40 | 40 |
| Q2 2023 | 16 | 42 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2022 | $1.1m | $134.0k | 0.13 |
| Q4 2022 | $870.0k | $213.5k | 0.25 |
| Q1 2023 | $1.1m | $229.2k | 0.20 |
| Q2 2023 | $1.4m | $230.4k | 0.16 |
Biggest buyers
| GSA CAPITAL PARTNERS LLP | New | +114.7k |
| Squarepoint Ops LLC | Added | +74.1k |
| MARSHALL WACE, LLP | Added | +51.0k |
| Assenagon Asset Management S.A. | Added | +30.1k |
| Patriot Financial Group Insurance Agency, LLC | Added | +29.0k |
| Affinity Asset Advisors, LLC | Added | +25.0k |
| Connor, Clark & Lunn Investment Management Ltd. | Added | +15.8k |
| Prospera Financial Services Inc | Added | +8.4k |
| GEODE CAPITAL MANAGEMENT, LLC | Added | +4.8k |
| RICE HALL JAMES & ASSOCIATES, LLC | Added | +3.5k |
Biggest sellers
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | -361.6k |
| Eversept Partners, LP | Reduced | -279.9k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -179.6k |
| Cubist Systematic Strategies, LLC | Reduced | -116.5k |
| TWO SIGMA INVESTMENTS, LP | Reduced | -102.1k |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | -76.9k |
| Qube Research & Technologies Ltd | Sold out | -76.7k |
| FMR LLC | Reduced | -63.9k |
| Man Group plc | Sold out | -62.5k |
| 683 Capital Management, LLC | Sold out | -36.5k |
Biggest calls
| MILLENNIUM MANAGEMENT LLC | Added | $931.2k263.8k shares |
| GROUP ONE TRADING LLC | Added | $180.0k51.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $113.7k32.2k shares |
| SIMPLEX TRADING, LLC | Reduced | $82.0k23.3k shares |
| CITADEL ADVISORS LLC | Added | $59.7k16.9k shares |
| WOLVERINE TRADING, LLC | New | $37.4k11.0k shares |
| Patriot Financial Group Insurance Agency, LLC | New | $2.7k7.7k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $117.2k33.2k shares |
| SIMPLEX TRADING, LLC | Reduced | $55.0k15.6k shares |
| CITADEL ADVISORS LLC | Added | $38.8k11.0k shares |
| GROUP ONE TRADING LLC | Added | $19.4k5.5k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
AUERBACH ALAN H
13D · may seek influence
filed 2026-10-06
Stated purposeThe information set forth or incorporated in Item 3 above is incorporated herein by reference. From time to time, Mr. Auerbach may acquire beneficial ownership of additional shares of Common Stock or other securities of the Issuer by purchase, as compensation from the Issuer, or otherwise, including, but not limited to, awards of restricted Common Shares, options to purchase Common Shares, and restricted stock units for Common Shares, or dispose of some or all of the shares of Common Stock beneficially owned by Mr. Auerbach in the open market or in privately negotiated transactions (which may be with the Issuer or with third parties) on such terms and at such times as Mr. Auerbach may deem advisable. Mr. Auerbach is the President, Chief Executive Officer and a director of the Issuer. In … Full filing |
16.0% |
| ACORN BIOVENTURES, L.P. 13G · passive investor +1.3 pts · filed 2025-02-14 | 8.0% |
| BlackRock, Inc. 13G · institution filed 2025-04-17 | 5.6% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27)
Insider purchases and sales in Q2 2023
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2021 | 0 | — | 0 | — | — |
| Q4 2021 | 0 | — | 4 | $38.9k | — |
| Q1 2022 | 0 | — | 5 | $205.1k | — |
| Q2 2022 | 0 | — | 8 | $255.0k | — |
| Q3 2022 | 0 | — | 6 | $225.0k | — |
| Q4 2022 | 0 | — | 4 | $19.1k | — |
| Q1 2023 | 0 | — | 5 | $217.3k | — |
| Q2 2023 | 0 | — | 7 | $285.3k | $285.3k |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2023-06-13 | WILSON TROY EDWARD Director | Sold plan | $93.2k27.0k shares |
| 2023-06-13 | Senderowicz Adrian Director | Sold plan | $93.2k27.0k shares |
| 2023-06-13 | MOYES JAY M Director | Sold plan | $75.9k22.0k shares |
| 2023-06-13 | MILLER MICHAEL PATRICK Director | Sold plan | $46.6k13.5k shares |
| 2023-06-13 | Dorval Allison Director | Sold plan | $34.5k10.0k shares |
| 2023-06-13 | Stuglik Brian M Director | Sold plan | $34.3k9.9k shares |
| 2023-06-02 | Wong Alvin F Chief Scientific Officer | Sold plan | $928269 shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2023
| Manager | Shares | Change |
|---|---|---|
| Camber Capital Management LP 0.49% of their portfolio | 4.2m $14.9m | Unchanged |
| VANGUARD GROUP INC 0.00% of their portfolio | 3.8m $13.3m | Reduced -7.2k |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 2.8m $9.9m | Reduced -179.6k |
| ACADIAN ASSET MANAGEMENT LLC 0.03% of their portfolio | 1.9m $6.6m | Reduced -736 |
| Athyrium Capital Management, LP 4.10% of their portfolio | 1.8m $6.3m | Unchanged |
| RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio | 1.8m $6.2m | Reduced -76.9k |
| Eversept Partners, LP 0.62% of their portfolio | 1.7m $5.9m | Reduced -279.9k |
| BlackRock Inc. 0.00% of their portfolio | 1.5m $5.4m | Reduced -1.6k |
| Hillsdale Investment Management Inc. 0.26% of their portfolio | 802.9k $2.8m | Reduced -31.2k |
| GLOBEFLEX CAPITAL L P 0.22% of their portfolio | 561.5k $2.0m | Unchanged |
| Kynam Capital Management, LP 0.26% of their portfolio | 473.1k $1.7m | Unchanged |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 430.3k $1.5m | Reduced -22.8k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 396.4k $1.4m | Added +4.8k |
| RICE HALL JAMES & ASSOCIATES, LLC 0.07% of their portfolio | 371.0k $1.3m | Added +3.5k |
| TWO SIGMA ADVISERS, LP 0.00% of their portfolio | 344.6k $1.2m | Reduced -36.0k |
| MORGAN STANLEY 0.00% of their portfolio | 323.6k $1.1m | Reduced -16.3k |
| SEI INVESTMENTS CO 0.00% of their portfolio | 285.6k $1.0m | Reduced -462 |
| MARSHALL WACE, LLP 0.00% of their portfolio | 224.8k $793.5k | Added +51.0k |
| Assenagon Asset Management S.A. 0.00% of their portfolio | 223.3k $788.3k | Added +30.1k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 219.4k $774.6k | Reduced -16.9k |
| Affinity Asset Advisors, LLC 0.28% of their portfolio | 202.3k $714.3k | Added +25.0k |
| Connor, Clark & Lunn Investment Management Ltd. 0.00% of their portfolio | 199.8k $705.2k | Added +15.8k |
| LSV ASSET MANAGEMENT 0.00% of their portfolio | 194.6k $687.0k | Unchanged |
| FEDERATED HERMES, INC. 0.00% of their portfolio | 181.9k $642.3k | Reduced -9.1k |
| STATE STREET CORP 0.00% of their portfolio | 166.6k $588.0k | Reduced -22.0k |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 148.4k $523.9k | Unchanged |
| CORNERCAP INVESTMENT COUNSEL INC 0.08% of their portfolio | 127.0k $448.2k | Added +2.0k |
| GSA CAPITAL PARTNERS LLP 0.04% of their portfolio | 114.7k $405.0k | New |
| Prospera Financial Services Inc 0.01% of their portfolio | 108.4k $382.8k | Added +8.4k |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 106.1k $374.4k | Reduced -102.1k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 100.6k $355.2k | Reduced -361.6k |
| Squarepoint Ops LLC 0.00% of their portfolio | 91.0k $321.2k | Added +74.1k |
| XTX Topco Ltd 0.05% of their portfolio | 78.5k $276.9k | Reduced -3.2k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 73.9k $260.9k | Reduced -90 |
| Bank of New York Mellon Corp 0.00% of their portfolio | 72.3k $255.1k | Reduced -1.1k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 69.6k $245.7k | Reduced -246 |
| Patriot Financial Group Insurance Agency, LLC 0.04% of their portfolio | 65.0k $229.4k | Added +29.0k |
| FMR LLC 0.00% of their portfolio | 63.9k $225.6k | Reduced -63.9k |
| MACQUARIE GROUP LTD 0.00% of their portfolio | 61.3k $216.0k | Unchanged |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 32.9k $116.2k | Reduced -20.2k |
| Crestline Management, L.P. 0.01% of their portfolio | 32.6k $115.2k | Added +755 |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 24.2k $85.5k | Unchanged |
| PDT Partners, LLC 0.01% of their portfolio | 21.9k $77.5k | Unchanged |
| Cubist Systematic Strategies, LLC 0.00% of their portfolio | 21.7k $76.6k | Reduced -116.5k |
| Jump Financial, LLC 0.00% of their portfolio | 19.5k $68.8k | Reduced -15.4k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 19.5k $68.7k | Unchanged |
| Focus Partners Advisor Solutions, LLC 0.00% of their portfolio | 19.2k $67.8k | Unchanged |
| BARCLAYS PLC 0.00% of their portfolio | 17.3k $61.2k | Added +42 |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 16.4k $57.9k | Unchanged |
| CAXTON ASSOCIATES LP 0.01% of their portfolio | 16.2k $57.4k | Reduced -8.4k |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 16.2k $51.9k | Reduced -727 |
| COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio | 10.7k $38.0k | Unchanged |
| SIMPLEX TRADING, LLC 0.00% of their portfolio | 5.3k $18.0k | Reduced -5.0k |
| UBS Group AG 0.00% of their portfolio | 4.1k $14.3k | Reduced -6.9k |
| Lindbrook Capital, LLC 0.00% of their portfolio | 2.8k $9.9k | Unchanged |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 2.1k $7.4k | New |
| GHP Investment Advisors, Inc. 0.00% of their portfolio | 1.2k $4.5k | Unchanged |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 1.1k $3.9k | Unchanged |
| Geneos Wealth Management Inc. 0.00% of their portfolio | 1.0k $3.5k | Unchanged |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 988 $3.0k | Added +603 |
| Aspire Private Capital, LLC 0.00% of their portfolio | 700 $2.5k | Unchanged |
| Impact Partnership Wealth, LLC 0.00% of their portfolio | 308 $1.1k | First filing |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 289 $1.0k | Added +17 |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 242 $854 | Unchanged |
| US BANCORP \DE\ 0.00% of their portfolio | 200 $706 | Unchanged |
| Cutler Group LLC / CA 0.00% of their portfolio | 200 $0 | Unchanged |
| TUCKER ASSET MANAGEMENT LLC 0.00% of their portfolio | 126 $445 | Unchanged |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 35 $124 | Reduced -4.8k |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio | 0 $0 | Unchanged |