AMGN Amgen, Inc.
Amgen, Inc. (AMGN) Hedge Fund Activity
This view isolates hedge funds from the broader institutional ownership shown on the Institutional tab. A pension fund tracking an index may have no view on a stock; when a hedge fund builds or exits a position, that decision can carry information. This page measures those changes. Positions as of June 30, 2026.
Based on quarterly 13F long-equity filings. Changes compare reported quarter-end positions; filings can be reported up to 45 days later and do not represent a fund's complete exposure.
Most significant moves
Ranked by conviction, not size — how much of the fund's own book the position represents, how far it moved, and what kind of fund made it.
| Fund | Action | Shares changed | Change | Est. value | Portfolio wt. | Score |
|---|---|---|---|---|---|---|
| Capula Management Quant Macro | Increased | +300.0K | +491808.2% | $108.6M | 1.5% | 65 |
| Hudson Bay Capital Management Event | New | +281.0K | — | $101.8M | 0.6% | 64 |
| D. E. Shaw & Co., Inc. Quant | Increased | +1.11M | +624.8% | $402.8M | 0.3% | 63 |
| OrbiMed Advisors Growth Healthcare | Sold Out | -39.9K | -100.0% | $14.4M | 0.0% | 63 |
| TWO SIGMA INVESTMENTS, LP Quant | Increased | +1.06M | +1474.6% | $382.8M | 0.3% | 62 |
| Qube Research & Technologies Ltd Quant | Sold Out | -147.5K | -100.0% | $53.4M | 0.0% | 61 |
| CITADEL ADVISORS LLC Quant | Increased | +519.0K | +280.6% | $187.9M | 0.2% | 61 |
| WORLDQUANT MILLENNIUM ADVISORS LLC Quant | Increased | +298.0K | +313.6% | $107.9M | 0.5% | 60 |
| Quadrature Capital Quant | Sold Out | -45.6K | -100.0% | $16.5M | 0.0% | 58 |
| Alphadyne Asset Management Quant Macro | Sold Out | -15.1K | -100.0% | $5.5M | 0.0% | 57 |
Most significant buyers
By move score, not size.
- Capula Management
- Hudson Bay Capital Management
- D. E. Shaw & Co., Inc.
- TWO SIGMA INVESTMENTS, LP
- CITADEL ADVISORS LLC
Most significant sellers
By move score, not size.
- OrbiMed Advisors
- Qube Research & Technologies Ltd
- Quadrature Capital
- Alphadyne Asset Management
- Capital Fund Management
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| Capula Management | 2 | 300.1K | 61 | +300.0K | +491808.2% | 1.5% | Increased | 65 |
| Hudson Bay Capital Management | 3 | 281.0K | 0 | +281.0K | — | 0.6% | New | 64 |
| D. E. Shaw & Co., Inc. | 1 | 1.3M | 178.0K | +1.11M | +624.8% | 0.3% | Increased | 63 |
| OrbiMed Advisors | 2 | 0 | 39.9K | -39.9K | -100.0% | 0.0% | Sold Out | 63 |
| TWO SIGMA INVESTMENTS, LP | 2 | 1.1M | 71.7K | +1.06M | +1474.6% | 0.3% | Increased | 62 |
| Qube Research & Technologies Ltd | 2 | 0 | 147.5K | -147.5K | -100.0% | 0.0% | Sold Out | 61 |
| CITADEL ADVISORS LLC | 1 | 704.0K | 185.0K | +519.0K | +280.6% | 0.2% | Increased | 61 |
| WORLDQUANT MILLENNIUM ADVISORS LLC | 2 | 393.1K | 95.0K | +298.0K | +313.6% | 0.5% | Increased | 60 |
| Quadrature Capital | 3 | 0 | 45.6K | -45.6K | -100.0% | 0.0% | Sold Out | 58 |
| Alphadyne Asset Management | 3 | 0 | 15.1K | -15.1K | -100.0% | 0.0% | Sold Out | 57 |
| Capital Fund Management | 3 | 0 | 12.9K | -12.9K | -100.0% | 0.0% | Sold Out | 55 |
| LMR Partners | 3 | 4.3K | 0 | +4.3K | — | 0.0% | New | 55 |
| Walleye Capital | 3 | 240.3K | 25 | +240.3K | +961172.0% | 0.7% | Increased | 55 |
| Jain Global | 3 | 0 | 10.7K | -10.7K | -100.0% | 0.0% | Sold Out | 54 |
| Balyasny Asset Management L.P. | 2 | 17.9K | 8.0K | +10.0K | +124.9% | 0.0% | Increased | 53 |
| Polar Asset Management Partners | 3 | 556 | 0 | +556 | — | 0.0% | New | 53 |
| J. Goldman & Co. | 3 | 0 | 9.9K | -9.9K | -100.0% | 0.0% | Sold Out | 53 |
| Lighthouse Investment Partners | 3 | 3.9K | 0 | +3.9K | — | 0.0% | New | 53 |
| Capstone Investment Advisors | 3 | 0 | 1.7K | -1.7K | -100.0% | 0.0% | Sold Out | 53 |
| Aquatic Capital Management | 4 | 18.1K | 0 | +18.1K | — | 0.2% | New | 51 |
| AQR Capital Management | 3 | 300.0K | 152.2K | +147.8K | +97.1% | 0.0% | Increased | 50 |
| MARSHALL WACE, LLP | 2 | 99.4K | 316.9K | -217.5K | -68.6% | 0.0% | Reduced | 49 |
| MILLENNIUM MANAGEMENT LLC | 2 | 79.3K | 230.0K | -150.7K | -65.5% | 0.0% | Reduced | 49 |
| Engineers Gate | 4 | 0 | 1.9K | -1.9K | -100.0% | 0.0% | Sold Out | 48 |
| Quantbot Technologies | 4 | 0 | 4.8K | -4.8K | -100.0% | 0.0% | Sold Out | 48 |
| Edgestream Partners | 4 | 29.1K | 8.4K | +20.7K | +247.1% | 0.3% | Increased | 46 |
| Brevan Howard Capital Management | 3 | 18.8K | 5.1K | +13.7K | +267.0% | 0.1% | Increased | 46 |
| Bridgewater Associates | 1 | 21.9K | 14.8K | +7.1K | +48.0% | 0.0% | Increased | 44 |
| Man Group | 3 | 234.0K | 142.5K | +91.5K | +64.2% | 0.2% | Increased | 42 |
| Y-Intercept | 4 | 5.3K | 32.4K | -27.1K | -83.7% | 0.0% | Reduced | 41 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 2 | 471.8K | 342.5K | +129.3K | +37.8% | 0.2% | Increased | 39 |
| Verition Fund Management | 2 | 1.8K | 4.5K | -2.8K | -60.6% | 0.0% | Reduced | 38 |
| Centiva Capital | 4 | 26.4K | 18.2K | +8.3K | +45.4% | 0.5% | Increased | 33 |
| Woodline Partners LP | 2 | 238.1K | 205.8K | +32.3K | +15.7% | 0.3% | Increased | 32 |
| Squarepoint Ops LLC | 2 | 208.0K | 184.3K | +23.7K | +12.9% | 0.2% | Increased | 30 |
| Chilton Investment Company | 2 | 3.3K | 3.7K | -429 | -11.5% | 0.0% | Reduced | 26 |
| Boothbay Fund Management | 4 | 1.1K | 1.8K | -607 | -34.6% | 0.0% | Reduced | 26 |
| Voleon Capital Management | 3 | 1.9K | 1.5K | +378 | +25.3% | 0.0% | Increased | 26 |
| Gotham Asset Management, LLC | 2 | 46.6K | 47.4K | -769 | -1.6% | 0.0% | Reduced | 24 |
| Parallax Volatility Advisers | 3 | 5.4K | 4.8K | +564 | +11.8% | 0.1% | Increased | 22 |
Every fund above opens. Subscribers can see any manager's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeHedge funds are identified from their 13F filings, which are due 45 days after quarter end and cover long U.S.-listed equity positions only. A fund's short book never appears, so a reduced position can mean a changed view or a changed hedge — the filing doesn't say which.