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Of the 10 tracked institutions holding PBYI, 3 have a 3-year clone track record — 3 of them beat the S&P. Average holder's clone alpha: +4.8pt. It's a gauge of who owns the name, not just how many.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
Among the 10 tracked institutional investors we monitor, PBYI (PUMA BIOTECHNOLOGY INC) is held with a combined value of $90.29M across 12,163,272 shares. The largest holder is BlackRock, Inc. with a position worth $30.86M. WELLINGTON MANAGEMENT GROUP LLP opened a new position in the most recent quarter. 5 funds increased their holdings. 4 funds reduced their position.
Total Institutional Value
$90.29M
Total Shares Held
12,163,272
Institutional Holders
10
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | BlackRock, Inc. | $30.86M | 0.00% | +5.7% |
| 2 | VANGUARD GROUP INC | $22.60M | 0.00% | +2.9% |
| 3 | RENAISSANCE TECHNOLOGIES LLC | $14.89M | 0.02% | -5.5% |
| 4 | STATE STREET CORP | $7.72M | 0.00% | +3.8% |
| 5 | AQR CAPITAL MANAGEMENT LLC | $5.88M | 0.00% | -9.4% |
| 6 | MILLENNIUM MANAGEMENT LLC | $4.88M | 0.00% | -59.2% |
| 7 | FMR LLC | $1.71M | 0.00% | +10.2% |
| 8 | WELLINGTON MANAGEMENT GROUP LLP | $1.02M | 0.00% | New |
| 9 | TWO SIGMA ADVISERS, LP | $423.05K | 0.00% | -2.9% |
| 10 | PRICE T ROWE ASSOCIATES INC /MD/ | $295.00K | 0.00% | +16.1% |
SEC Schedule 13D (activist) and 13G (passive) filings for PBYI. Filed when an investor acquires 5%+ ownership.
As of the latest SEC 13F filings, BlackRock, Inc. is the largest institutional holder of PBYI with a position worth $30.86M, representing 0.00% of their portfolio. In total, 10 institutional investors hold PBYI with a combined value of $90.29M.
In the most recent quarter, 1 fund opened a new position in PBYI. Additionally, 5 increased their holdings and 4 reduced their positions.
Institutional investors hold $90.29M worth of PBYI stock across 10 positions. The largest institutional holder is BlackRock, Inc. with $30.86M in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For PBYI, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their PBYI positions.
Last Close
$10.90
2026-10-21
YTD
+88.9%
100% of 52-week range