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: −$7.71M (3 inflow days, 17 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 29.6% of shares outstanding.
Reported short interest has fallen from 13.45% to 12.99% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).
| Holder | Type | Period | Share change | New stake |
|---|---|---|---|---|
| Federated Hermes, Inc. | Mutual Fund | 2026/Q3 | +1,078,984 | 2.2% |
| Soleus Capital Management, L.P. | Hedge Fund | 2026/Q3 | +843,000 | 1.8% |
| LMR Partners LLP | Hedge Fund | 2026/Q3 | +721,608 | 1.3% |
| Janus Henderson Group plc | Mutual Fund | 2026/Q3 | +719,158 | 1.9% |
| T. Rowe Price Group, Inc. | Mutual Fund | 2026/Q3 | +718,404 | 8.0% |
| BlackRock | Mutual Fund | 2026/Q3 | +507,826 | 8.5% |
| William Blair Investment Management, LLC | Mutual Fund | 2026/Q3 | +492,964 | 2.2% |
| Frontier Capital Management | Mutual Fund | 2026/Q3 | +481,671 | 1.9% |
| Wellington Management Group | Mutual Fund | 2026/Q3 | +412,399 | 2.2% |
| Susquehanna International Group, LLP | Private Company | 2026/Q3 | +205,672 | 0.4% |
| Davern Capital Partners, LP | Hedge Fund | 2026/Q3 | +203,720 | 0.8% |
| BNP Paribas Financial Markets SNC | Private Company | 2026/Q3 | +201,894 | 0.7% |
| Deutsche Asset & Wealth Management | Mutual Fund | 2026/Q3 | +193,683 | 0.4% |
| Centerbook Partners LP | Hedge Fund | 2026/Q3 | +172,192 | 0.4% |
| Healthcare of Ontario Pension Plan Trust Fund | Government Pension Fund | 2026/Q3 | +160,581 | 0.3% |
Institutional buy/sell activity by reporting period, largest moves first.
| Date | Insider | Title | Transaction | Shares | Price | Held after |
|---|---|---|---|---|---|---|
| 1 Oct 2026 | Michael Mack | Independent Director | Other Acquisition | +7,727 | – | 7,727 |
| 1 Oct 2026 | Michael Mack | Independent Director | Other Derivative Acquisition | +12,191 | $17.16 | 12,191 |
| 8 Sep 2026 | Alaleh Nouri | EVP, Chief Legal Officer & Corporate Secretary | Open Market Disposition | -297 | $20.95 | 38,444 |
| 8 Sep 2026 | Barry Templin | Senior Vice President of Medical Affairs & Market Access | Open Market Disposition | -373 | $20.95 | 151,283 |
| 8 Sep 2026 | Kevin Waters | Chief Financial Officer | Open Market Disposition | -373 | $20.95 | 79,969 |
| 12 Aug 2026 | Alaleh Nouri | EVP, Chief Legal Officer & Corporate Secretary | Other Acquisition | +22,965 | – | 90,103 |
| 12 Aug 2026 | Alaleh Nouri | EVP, Chief Legal Officer & Corporate Secretary | Other Derivative Acquisition | +31,773 | $21.95 | 31,773 |
| 12 Aug 2026 | Barry Templin | Senior Vice President of Medical Affairs & Market Access | Other Acquisition | +26,246 | – | 151,656 |
| 12 Aug 2026 | Barry Templin | Senior Vice President of Medical Affairs & Market Access | Other Derivative Acquisition | +36,312 | $21.95 | 36,312 |
| 12 Aug 2026 | Kevin Waters | Chief Financial Officer | Other Acquisition | +29,527 | – | 101,405 |
| 12 Aug 2026 | Kevin Waters | Chief Financial Officer | Other Derivative Acquisition | +40,851 | $21.95 | 40,851 |
| 12 Aug 2026 | Pooja Sharma | Other Acquisition | +23,622 | – | 111,181 | |
| 12 Aug 2026 | Pooja Sharma | Other Derivative Acquisition | +32,681 | $21.95 | 32,681 | |
| 6 Aug 2026 | Larry Wood | Independent Director | Open Market Acquisition | +23,900 | $20.85 | 26,910 |
| 8 Jun 2026 | Thomas Prescott | Chairperson of the Board | Other Acquisition | +3,315 | – | 4,887 |
| 8 Jun 2026 | Thomas Prescott | Chairperson of the Board | Other Derivative Acquisition | +5,853 | $28.78 | 5,853 |
| 8 Jun 2026 | Frederic Moll | Independent Chairperson | Other Acquisition | +3,315 | – | 3,315 |
| 8 Jun 2026 | Frederic Moll | Independent Chairperson | Other Derivative Acquisition | +5,853 | $28.78 | 5,853 |
| 8 Jun 2026 | Taylor Harris | Independent Director | Other Acquisition | +3,315 | – | 3,315 |
| 8 Jun 2026 | Taylor Harris | Independent Director | Other Derivative Acquisition | +5,853 | $28.78 | 5,853 |
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 | 7,440,176 | 13.0% | 5.6 |
| 31 Aug 2026 | 7,248,594 | 12.7% | 8.6 |
| 14 Aug 2026 | 7,705,034 | 13.5% | 3.5 |
| 31 Jul 2026 | 7,091,454 | 12.5% | 5.1 |
| 15 Jul 2026 | 7,753,703 | 13.6% | 4.9 |
| 30 Jun 2026 | 7,654,020 | 13.4% | 3.9 |
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