Institutional Holders (2026 Q1)
476 + investorsExplore institutional interest and hedge fund ownership dynamics. Analyze portfolio weights, new positions, and conviction trends in PEN. Verified SEC 13F-HR filings.
| # | Investor | % of Portfolio | Shares | Mkt Value |
|---|---|---|---|---|
| 1 | Ursa Fund Management, LLC | 15.21% | 49,800 | $16.4M |
| 2 | Decagon Asset Management LLP | 14.25% | 167,588 | $55.0M |
| 3 | Ursa Fund Management, LLC | 10.69% | 35,000 | $11.5M |
| 4 | Slotnik Capital, LLC | 9.70% | 101,000 | $33.2M |
| 5 | Birnam Oak Advisors, LP | 7.15% | 95,990 | $31.5M |
| 6 | Sand Grove Capital Management LLP | 6.41% | 86,758 | $28.5M |
| 7 | Vazirani Asset Management LLC | 5.68% | 7,500 | $2.5M |
| 8 | Hbk Investments L P | 5.45% | 1,634,261 | $536.6M |
| 9 | CIBRA Capital Ltd | 5.01% | 31,600 | $10.4M |
| 10 | PSquared Asset Management AG | 4.89% | 42,785 | $14.0M |
| 11 | Water Island Capital LLC | 4.40% | 120,095 | $39.4M |
| 12 | Olympiad Research LP | 4.39% | 4,389 | $1.4M |
| 13 | Equitec Proprietary Markets, LLC | 4.35% | 24,800 | $8.1M |
| 14 | PFM Health Sciences, LP | 4.19% | 139,779 | $45.9M |
| 15 | Versor Investments LP | 3.65% | 4,537 | $1.5M |
| 16 | Kryger Capital LLC | 3.57% | 153,848 | $50.5M |
| 17 | Harvest Management LLC | 2.86% | 18,000 | $5.9M |
| 18 | Melqart Asset Management (UK) Ltd | 2.65% | 81,822 | $26.9M |
| 19 | Alpine Associates Management INC. | 2.55% | 131,950 | $43.3M |
| 20 | GABELLI & Co INVESTMENT ADVISERS, INC. | 2.52% | 51,692 | $17.0M |
| 21 | Equitec Proprietary Markets, LLC | 2.49% | 14,200 | $4.7M |
| 22 | Rock Springs Capital Management LP | 2.33% | 120,500 | $39.6M |
| 23 | Cordgrass Capital Advisors, LLC | 2.33% | 30,307 | $10.0M |
| 24 | Quarry LP | 2.32% | 39,345 | $12.9M |
| 25 | Carret Asset Management, LLC | 2.31% | 72,000 | $23.6M |
| Investor | Ownership History |
% of Portfolio | Prev % | Rank | Conviction | Avg Buy Price | 13F Score™ 3Y / 7Y | Sell Timing | Shares | Mkt Value | Change | Change % | Source | Quarter | Filed |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|