Latest Period
Q1 2026
Security Snapshot
PUMA BIOTECHNOLOGY, INC. - Common Stock (PBYI) Institutional Ownership
CUSIP: 74587V107
13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026
Institutions Reporting
155
Shares (Excl. Options)
37,858,589
Price
$6.39
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- Security type / class
- Equity / Common Stock
- Symbol
- PBYI on Nasdaq
- Shares outstanding
- 49,633,071
- Reported price per share
- $7.48
- Price from insider filings
- $7.48
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 37,858,589
- Total reported value
- $241,840,020
- Portfolio coverage rank
- 0%
- Share change
- +2,492,862
- Value change
- +$16,253,874
- Number of holders
- 155
Security identity
Issuer context
Latest holder snapshot
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Key facts
- PBYI - PUMA BIOTECHNOLOGY, INC. - Common Stock is tracked under CUSIP 74587V107.
- 155 institutions reported positions in Q1 2026.
- 3 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 151 to 155 between Q4 2025 and Q1 2026.
- Reported value moved from $210,235,242 to $241,840,020.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 155 institutions filings for Q1 2026.
Security key
74587V107
Latest holder period
Q1 2026
13F holders
155
13D/G owners
3
CIK / CUSIP context first
Open Q1 2026 holders
PBYI full holder history
PUMA BIOTECHNOLOGY, INC. SEC filings
PUMA BIOTECHNOLOGY, INC. company facts
PUMA BIOTECHNOLOGY, INC. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 74587V107:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
3
Security
PBYI
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| ACORN BIOVENTURES, L.P. | 8% | +19% | $11,859,557 | +$1,988,442 | 3,940,052 | +20% | Anders Hove | 31 Dec 2024 |
| BlackRock, Inc. | 5.6% | $8,366,151 | 2,779,452 | BlackRock, Inc. | 31 Mar 2025 | |||
| MILLENNIUM MANAGEMENT LLC | 3.9% | $5,701,319 | 1,894,126 | Millennium Management LLC | 31 Dec 2024 |
As of 31 Mar 2026, 155 institutional investors reported holding 37,858,589 shares of PUMA BIOTECHNOLOGY, INC. - Common Stock (PBYI). This represents 76% of the company’s total 49,633,071 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
64%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| ACORN CAPITAL ADVISORS, LLC | 8.3% | 4,131,299 | 0% | 7.5% | $26,399,001 |
| BlackRock, Inc. | 7.3% | 3,598,952 | -1.2% | 0% | $22,997,304 |
| ACADIAN ASSET MANAGEMENT LLC | 4.1% | 2,041,759 | +0.84% | 0.02% | $13,043,000 |
| RENAISSANCE TECHNOLOGIES LLC | 3.9% | 1,942,413 | -8.5% | 0.02% | $12,412,019 |
| AMERICAN CENTURY COMPANIES INC | 3.9% | 1,916,346 | +16% | 0.01% | $12,245,451 |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.7% | 1,817,681 | 0% | 0% | $11,614,982 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 3.5% | 1,734,649 | 0% | 0% | $11,084,407 |
| MILLENNIUM MANAGEMENT LLC | 3% | 1,477,519 | +8793% | 0.01% | $9,441,346 |
| DIMENSIONAL FUND ADVISORS LP | 2.9% | 1,436,106 | +7.2% | 0% | $9,174,976 |
| LSV ASSET MANAGEMENT | 2.4% | 1,182,868 | +192% | 0.02% | $7,559,000 |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC | 2.3% | 1,138,169 | +1.6% | 0.04% | $7,272,900 |
| GEODE CAPITAL MANAGEMENT, LLC | 2% | 1,017,342 | +2.3% | 0% | $6,502,357 |
| STATE STREET CORP | 1.8% | 917,590 | +4.6% | 0% | $5,863,400 |
| KENNEDY CAPITAL MANAGEMENT LLC | 1.8% | 889,601 | +2.5% | 0.12% | $5,684,550 |
| AQR CAPITAL MANAGEMENT LLC | 1.6% | 800,194 | +20% | 0% | $5,113,239 |
| Connor, Clark & Lunn Investment Management Ltd. | 1.6% | 782,798 | -11% | 0.01% | $5,002,079 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 1.6% | 775,341 | +0.24% | 0.1% | $4,954,429 |
| RITHOLTZ WEALTH MANAGEMENT | 1.6% | 774,308 | +12% | 0.09% | $4,947,828 |
| GOLDMAN SACHS GROUP INC | 1.3% | 669,719 | -16% | 0% | $4,279,504 |
| NORTHERN TRUST CORP | 1.3% | 641,753 | +4.1% | 0% | $4,100,802 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1.1% | 538,155 | -1.8% | 0% | $3,438,810 |
| UBS Group AG | 1.1% | 534,227 | +320% | 0% | $3,413,710 |
| SEI INVESTMENTS CO | 1% | 508,182 | +18% | 0% | $3,247,282 |
| MORGAN STANLEY | 0.72% | 359,742 | +10% | 0% | $2,298,751 |
| D. E. Shaw & Co., Inc. | 0.71% | 351,235 | -7.2% | 0% | $2,244,392 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
49
Latest
Q1 2026
Rows shown
1-25 of 49
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 37,858,589 | $241,840,020 | +$16,253,874 | $6.39 | 155 |
| 2025 Q4 | 35,345,329 | $210,235,242 | +$5,397,552 | $5.95 | 151 |
| 2025 Q3 | 34,380,273 | $182,532,985 | +$11,531,913 | $5.31 | 131 |
| 2025 Q2 | 32,782,327 | $112,437,236 | +$8,596,760 | $3.43 | 121 |
| 2025 Q1 | 30,413,709 | $90,020,693 | +$2,952,602 | $2.96 | 116 |
| 2024 Q4 | 29,394,127 | $89,648,308 | -$7,801,084 | $3.05 | 111 |
| 2024 Q3 | 29,741,414 | $75,860,432 | -$5,784,759 | $2.55 | 100 |
| 2024 Q2 | 30,964,332 | $100,942,686 | -$1,236,662 | $3.26 | 98 |
| 2024 Q1 | 29,743,016 | $157,668,204 | +$17,052,475 | $5.30 | 93 |
| 2023 Q4 | 26,608,129 | $115,214,198 | +$4,767,738 | $4.33 | 82 |
| 2023 Q3 | 25,704,166 | $67,598,924 | -$2,428,856 | $2.63 | 67 |
| 2023 Q2 | 26,576,438 | $93,807,644 | -$4,382,380 | $3.53 | 67 |
| 2023 Q1 | 27,855,345 | $86,065,002 | -$527,663 | $3.09 | 77 |
| 2022 Q4 | 27,496,427 | $116,318,396 | -$138,759 | $4.23 | 86 |
| 2022 Q3 | 27,643,484 | $65,508,451 | -$1,989,453 | $2.37 | 71 |
| 2022 Q2 | 27,896,143 | $79,494,556 | -$4,139,901 | $2.85 | 77 |
| 2022 Q1 | 29,904,506 | $86,071,643 | -$477,483 | $2.88 | 95 |
| 2021 Q4 | 30,286,741 | $92,179,926 | -$39,504,988 | $3.04 | 96 |
| 2021 Q3 | 32,161,600 | $225,498,183 | -$28,665,006 | $7.01 | 112 |
| 2021 Q2 | 34,758,681 | $319,233,355 | -$17,282,962 | $9.18 | 118 |
| 2021 Q1 | 36,622,682 | $355,897,814 | +$13,747,740 | $9.72 | 117 |
| 2020 Q4 | 35,303,327 | $362,460,750 | -$9,270,334 | $10.26 | 120 |
| 2020 Q3 | 38,674,035 | $390,198,466 | +$12,930,607 | $10.09 | 128 |
| 2020 Q2 | 35,087,132 | $365,869,787 | -$6,707,284 | $10.43 | 124 |
| 2020 Q1 | 36,622,300 | $308,895,684 | +$43,630,089 | $8.44 | 121 |