Amgen AMGN
Ownership & positioning
Who holds it, who is betting against it, and where the big money is moving
Short-sale volume as % of daily volume
Large-order net flow, last 20 sessions
Net of large-order buying minus selling, in USD. Over this window: +$39.85M (13 inflow days, 7 outflow days).
Net flow by order size, last 20 sessions
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 31.8% of shares outstanding.
Largest holders
By investor type
Reported short interest has held roughly steady near 2.47% of float over the last 6 biweekly reports (31 Jul 2026 to 15 Oct 2026).
Recent institutional activity
| Holder | Type | Period | Share change | New stake |
|---|---|---|---|---|
| Assenagon Asset Management S.A. | Mutual Fund | 2026/Q3 | +888,819 | 0.2% |
| Wellington Management Group | Mutual Fund | 2026/Q3 | +2,514,254 | 0.5% |
| Charles Schwab Investment Management | Mutual Fund | 2026/Q3 | +2,267,157 | 2.8% |
| BlackRock | Mutual Fund | 2026/Q3 | +2,261,544 | 9.1% |
| T. Rowe Price Group, Inc. | Mutual Fund | 2026/Q3 | +2,089,803 | 0.7% |
| D. E. Shaw & Co., L.P. | Hedge Fund | 2026/Q3 | +1,112,208 | 0.2% |
| Two Sigma Investments, LP | Hedge Fund | 2026/Q3 | +1,057,001 | 0.2% |
| UBS Asset Management | Mutual Fund | 2026/Q3 | +766,583 | 1.6% |
| BNP Paribas Financial Markets SNC | Private Company | 2026/Q3 | +670,126 | 0.2% |
| Bellevue Asset Management AG | Mutual Fund | 2026/Q3 | +556,192 | 0.2% |
| Citadel Advisors LLC | Hedge Fund | 2026/Q3 | +519,021 | 0.1% |
| Amundi Asset Management | Mutual Fund | 2026/Q3 | +503,600 | 0.7% |
| First Trust Advisors L.P. | Mutual Fund | 2026/Q3 | +491,275 | 0.2% |
| SG Americas Securities, LLC | Private Company | 2026/Q3 | +466,719 | 0.2% |
| Invesco Capital Management LLC | Mutual Fund | 2026/Q3 | +465,679 | 2.9% |
Institutional buy/sell activity by reporting period, largest moves first.
Insider transactions
| Date | Insider | Title | Transaction | Shares | Price | Held after |
|---|---|---|---|---|---|---|
| 31 Aug 2026 | Thomas J. Dittrich | Chief Financial Officer | Initial Statement of Beneficial | +0 | – | 16,860 |
| 12 Aug 2026 | Rachna Khosla | Officer | Derivative Exercise and Sale | -1,252 | $416.43 | 4,890 |
| 10 Aug 2026 | Rachna Khosla | Officer | Open Market Disposition | -2,000 | $412.57 | 4,890 |
| 6 Aug 2026 | Charles Holley | Independent Director | Other Acquisition | +103 | – | 12,990 |
| 6 Aug 2026 | Michael Drake | Independent Director | Other Acquisition | +63 | – | 5,876 |
| 6 Aug 2026 | S. Ishrak | Independent Director | Other Acquisition | +85 | – | 6,551 |
| 6 Aug 2026 | Matthew Busch | Chief Accounting Officer & VP of Finance | Other Acquisition | +730 | – | 1,925 |
| 5 Aug 2026 | Nancy Grygiel | Senior VP of Worldwide Compliance & Business Ethics and Chief Compliance Officer | Intent to Sell (Form 144) | -2,970 | $402.00 | – |
| 5 Aug 2026 | Nancy Grygiel | Senior VP of Worldwide Compliance & Business Ethics and Chief Compliance Officer | Derivative Exercise and Sale | -2,970 | $402.16 | 5,968 |
| 5 Aug 2026 | Derek Miller | Officer | Derivative Exercise and Sale | -3,890 | $402.54 | 9,877 |
| 18 May 2026 | Robert Eckert | Lead Independent Director | Other Acquisition | +665 | – | 18,268 |
| 18 May 2026 | Amy Miles | Independent Director | Other Acquisition | +665 | – | 5,232 |
| 18 May 2026 | Charles Holley | Independent Director | Other Acquisition | +665 | – | 12,799 |
| 18 May 2026 | Gregory Garland | Independent Director | Other Acquisition | +665 | – | 13,848 |
| 18 May 2026 | Ellen Kullman | Independent Director | Other Acquisition | +665 | – | 14,126 |
| 18 May 2026 | Brian Druker | Independent Director | Other Acquisition | +665 | – | 6,244 |
| 18 May 2026 | Tyler Jacks | Independent Director | Other Acquisition | +665 | – | 14,838 |
| 18 May 2026 | Michael Drake | Independent Director | Other Acquisition | +665 | – | 5,774 |
| 18 May 2026 | Wanda Austin | Independent Director | Other Acquisition | +665 | – | 8,018 |
| 18 May 2026 | S. Ishrak | Independent Director | Other Acquisition | +665 | – | 6,424 |
From Form 4/Form 144 filings. Negative share counts are disposals (sales, gifts, or shares withheld for taxes); positive are acquisitions.
Short interest, by report
| Report date | Shares short | % of float | Days to cover |
|---|---|---|---|
| 15 Oct 2026 | 13,378,638 | 2.5% | 5.0 |
| 30 Sep 2026 | 14,028,739 | 2.6% | 4.1 |
| 15 Sep 2026 | 14,063,517 | 2.6% | 4.9 |
| 31 Aug 2026 | 12,973,938 | 2.4% | 5.6 |
| 14 Aug 2026 | 12,039,849 | 2.2% | 4.3 |
| 31 Jul 2026 | 13,280,607 | 2.5% | 5.2 |
No comments yet — be the first to weigh in on AMGN.
Sign in to join the discussion.