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: −$3.90M (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 40.6% of shares outstanding.
Reported short interest has fallen from 25.45% to 21.74% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).
| Holder | Type | Period | Share change | New stake |
|---|---|---|---|---|
| T. Rowe Price Group, Inc. | Mutual Fund | 2026/Q3 | +2,524,309 | 4.6% |
| Trails Edge Capital Partners, LP | Hedge Fund | 2026/Q3 | +925,000 | 4.0% |
| Adage Capital Management, L.P. | Hedge Fund | 2026/Q3 | +644,047 | 4.1% |
| Diadema Partners LP | Hedge Fund | 2026/Q3 | +571,107 | 1.0% |
| Janus Henderson Group plc | Mutual Fund | 2026/Q3 | +499,138 | 10.4% |
| Catalio Capital Management, LP | VC/PE Fund | 2026/Q3 | +471,254 | 0.9% |
| Parkman Healthcare Partners LLC | Hedge Fund | 2026/Q3 | +425,607 | 1.7% |
| Citadel Advisors LLC | Hedge Fund | 2026/Q3 | +423,501 | 1.2% |
| BlackRock | Mutual Fund | 2026/Q3 | +400,756 | 8.2% |
| Schonfeld Strategic Advisors LLC | Hedge Fund | 2026/Q3 | +306,360 | 0.7% |
| Acuta Capital Partners, LLC | Hedge Fund | 2026/Q3 | +265,546 | 0.9% |
| Bank of America Corporation | Public Company | 2026/Q3 | +265,151 | 1.2% |
| Opaleye Management Inc. | Hedge Fund | 2026/Q3 | +222,146 | 0.6% |
| Northern Trust Global Investments | Mutual Fund | 2026/Q3 | +220,895 | 1.0% |
| Dimensional Fund Advisors | Mutual Fund | 2026/Q3 | +208,034 | 1.3% |
Institutional buy/sell activity by reporting period, largest moves first.
| Date | Insider | Title | Transaction | Shares | Price | Held after |
|---|---|---|---|---|---|---|
| 4 Oct 2026 | David Kirn | Chief Executive Officer | Intent to Sell (Form 144) | -58,333 | $12.92 | – |
| 15 Sep 2026 | Scott Bizily | Chief Legal & Human Resources Officer and Corporate Secretary | Derivative Exercise and Sale | -1,635 | $13.65 | 8,617 |
| 13 Sep 2026 | David Kirn | Chief Executive Officer | Automatic Disposition | -58,333 | $13.90 | 1,367,486 |
| 31 Aug 2026 | Scott Bizily | Chief Legal & Human Resources Officer and Corporate Secretary | Derivative Exercise and Sale | -584 | $14.00 | 8,617 |
| 18 Aug 2026 | David Kirn | Chief Executive Officer | Automatic Disposition | -19,076 | $16.42 | 1,425,819 |
| 18 Aug 2026 | David Kirn | Chief Executive Officer | Derivative Exercise and Sale | -50,000 | $16.42 | 1,425,819 |
| 16 Aug 2026 | Scott Bizily | Chief Legal & Human Resources Officer and Corporate Secretary | Derivative Exercise and Sale | -3,270 | $12.20 | 8,617 |
| 3 Aug 2026 | David Kirn | Chief Executive Officer | Automatic Disposition | -26,842 | $10.23 | 1,444,895 |
| 2 Aug 2026 | David Kirn | Chief Executive Officer | Automatic Disposition | -12,415 | $10.05 | 1,471,737 |
| 9 Jul 2026 | David Kirn | Chief Executive Officer | Intent to Sell (Form 144) | -15,725 | $12.31 | – |
| 9 Jul 2026 | David Kirn | Chief Executive Officer | Open Market Disposition | -58,333 | $12.87 | 1,484,152 |
| 8 Jul 2026 | David Kirn | Chief Executive Officer | Intent to Sell (Form 144) | -42,608 | $12.89 | – |
| 29 Jun 2026 | Scott Bizily | Chief Legal & Human Resources Officer and Corporate Secretary | Derivative Exercise and Sale | -6,566 | $14.00 | 8,617 |
| 22 Jun 2026 | Scott Bizily | Chief Legal & Human Resources Officer and Corporate Secretary | Derivative Exercise and Sale | -9,810 | $12.00 | 8,617 |
| 21 Jun 2026 | David Kirn | Chief Executive Officer | Automatic Disposition | -114,746 | $10.47 | 1,542,485 |
| 16 Jun 2026 | Glenn Sblendorio | Director | Other Derivative Acquisition | +50,000 | $9.42 | 50,000 |
| 16 Jun 2026 | John Milligan | Executive Chairperson | Other Derivative Acquisition | +75,000 | $9.42 | 75,000 |
| 16 Jun 2026 | Charles Theuer | Independent Director | Other Derivative Acquisition | +50,000 | $9.42 | 50,000 |
| 16 Jun 2026 | Susannah Gray | Independent Director | Other Derivative Acquisition | +50,000 | $9.42 | 50,000 |
| 16 Jun 2026 | Jacob Chacko | Independent Director | Other Derivative Acquisition | +50,000 | $9.42 | 50,000 |
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 | 12,008,645 | 21.7% | 18.6 |
| 31 Aug 2026 | 12,069,229 | 21.8% | 8.1 |
| 14 Aug 2026 | 12,289,621 | 22.2% | 22.3 |
| 31 Jul 2026 | 12,038,453 | 23.0% | 17.7 |
| 15 Jul 2026 | 11,363,434 | 21.7% | 15.5 |
| 30 Jun 2026 | 13,305,097 | 25.5% | 9.1 |
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