Who holds it, who is betting against it, and where the big money is moving
Net of large-order buying minus selling, in USD. Over this window: −$3.89M (7 inflow days, 13 outflow days).
Super/Big orders approximate institutional-size trades; Mid/Small approximate retail-size trades. Net buy minus sell value in each bucket, summed over the window.
The five largest holders on file together own 26.8% of shares outstanding.
Reported short interest has risen from 12.75% to 21.64% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).
| Holder | Type | Period | Share change | New stake |
|---|---|---|---|---|
| Nuveen Asset Management LLC | Insurance Company | 2026/Q3 | +978,895 | 0.8% |
| Teachers Insurance and Annuity Association-College Retirement Equities Fund | Mutual Fund | 2026/Q3 | +959,339 | 0.9% |
| Propel Bio Management, LLC | Mutual Fund | 2026/Q3 | +731,409 | 1.1% |
| BlackRock | Mutual Fund | 2026/Q3 | +560,302 | 6.4% |
| Wasatch Advisors LP | Mutual Fund | 2026/Q3 | +507,527 | 1.1% |
| Renaissance Technologies Corp. | Hedge Fund | 2026/Q3 | +416,248 | 0.3% |
| State Street Global Advisors | Mutual Fund | 2026/Q3 | +381,829 | 2.3% |
| Numeric Investors LLC | Hedge Fund | 2026/Q3 | +351,700 | 0.3% |
| Hudson River Trading LLC | Private Company | 2026/Q3 | +344,811 | 0.3% |
| Dafna Capital Management, LLC | Hedge Fund | 2026/Q3 | +277,500 | 0.5% |
| Marshall Wace LLP | Hedge Fund | 2026/Q3 | +267,344 | 0.2% |
| Lido Advisors, LLC | Mutual Fund | 2026/Q3 | +215,316 | 0.2% |
| Geode Capital Management, LLC | Mutual Fund | 2026/Q3 | +214,697 | 2.1% |
| AWM Investment Company Inc | Hedge Fund | 2026/Q3 | +205,000 | 0.4% |
| Barclays PLC | Public Company | 2026/Q3 | +194,639 | 0.8% |
Institutional buy/sell activity by reporting period, largest moves first.
| Date | Insider | Title | Transaction | Shares | Price | Held after |
|---|---|---|---|---|---|---|
| 14 Sep 2026 | Daniel Barber | Chief Executive Officer | Open Market Disposition | -25,000 | $4.82 | 652,317 |
| 8 Sep 2026 | Peter Boyd | Senior Vice President of IT, HR & Communications | Derivative Exercise and Retained | +2,293 | $0.96 | 284,024 |
| 8 Sep 2026 | Sherry Korczynski | Officer | Derivative Exercise and Sale | -8,750 | $5.22 | 235,689 |
| 7 Sep 2026 | Daniel Barber | Chief Executive Officer | Derivative Exercise and Retained | +91,743 | $0.96 | 677,317 |
| 2 Sep 2026 | Cassie Jung | Officer | Derivative Exercise and Retained | +4,587 | $0.96 | 208,833 |
| 16 Aug 2026 | Daniel Barber | Chief Executive Officer | Open Market Disposition | -25,000 | $4.29 | 585,574 |
| 13 Aug 2026 | Sherry Korczynski | Officer | Sale to Issuer | -2,714 | $4.25 | 235,689 |
| 15 Jul 2026 | Daniel Barber | Chief Executive Officer | Open Market Disposition | -25,000 | $4.03 | 610,574 |
| 14 Jul 2026 | Daniel Barber | Chief Executive Officer | Intent to Sell (Form 144) | -25,000 | $4.04 | – |
| 22 Jun 2026 | Julie Krop | Independent Director | Derivative Exercise and Sale | -25,000 | $5.02 | – |
| 14 Jun 2026 | Daniel Barber | Chief Executive Officer | Open Market Disposition | -25,000 | $4.16 | 635,574 |
| 9 Jun 2026 | Timothy Morris | Independent Director | Other Derivative Acquisition | +50,500 | $3.99 | 50,500 |
| 9 Jun 2026 | Gregory Brown | Independent Director | Other Derivative Acquisition | +50,500 | $3.99 | 50,500 |
| 9 Jun 2026 | Julie Krop | Independent Director | Other Derivative Acquisition | +50,500 | $3.99 | 50,500 |
| 9 Jun 2026 | John Cochran | Independent Vice Chairperson | Other Derivative Acquisition | +50,500 | $3.99 | 50,500 |
| 9 Jun 2026 | Marco Taglietti | Independent Director | Other Derivative Acquisition | +50,500 | $3.99 | 50,500 |
| 9 Jun 2026 | Abigail Jenkins | Independent Director | Other Derivative Acquisition | +50,500 | $3.99 | 50,500 |
| 7 Jun 2026 | Sherry Korczynski | Officer | Sale to Issuer | -2,714 | – | 238,403 |
| 17 May 2026 | Thomas Zalewski | Chief Legal Officer & Chief Compliance Officer | Other Acquisition | +100,000 | – | 100,000 |
| 17 May 2026 | Thomas Zalewski | Chief Legal Officer & Chief Compliance Officer | Other Derivative Acquisition | +75,000 | $4.14 | 75,000 |
From Form 4/Form 144 filings. Negative share counts are disposals (sales, gifts, or shares withheld for taxes); positive are acquisitions.
| Report date | Shares short | % of float | Days to cover |
|---|---|---|---|
| 15 Sep 2026 | 27,161,738 | 21.6% | 11.8 |
| 31 Aug 2026 | 25,478,782 | 20.3% | 7.2 |
| 14 Aug 2026 | 20,951,747 | 16.7% | 5.2 |
| 31 Jul 2026 | 18,048,004 | 14.4% | 8.9 |
| 15 Jul 2026 | 16,674,440 | 13.3% | 10.9 |
| 30 Jun 2026 | 15,996,883 | 12.8% | 5.3 |
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