AMT American Tower Corp.
American Tower Corp. (AMT) 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 |
|---|---|---|---|---|---|---|
| Ilex Capital Partners Long/Short | New | +157.4K | — | $25.8M | 0.5% | 61 |
| MILLENNIUM MANAGEMENT LLC | Increased | +1.17M | +114.5% | $191.2M | 0.3% | 61 |
| Heard Capital Long/Short | Reduced | -307.3K | -27.6% | $50.3M | 5.6% | 60 |
| Qube Research & Technologies Ltd Quant | Increased | +1.14M | +7134.1% | $185.8M | 0.2% | 58 |
| Alyeska Investment Group, L.P. | Increased | +524.6K | +172.7% | $85.8M | 0.4% | 58 |
| WORLDQUANT MILLENNIUM ADVISORS LLC Quant | Increased | +439.2K | +316.3% | $71.8M | 0.3% | 57 |
| ExodusPoint Capital Management Long/Short Quant | Sold Out | -119.4K | -100.0% | $19.5M | 0.0% | 57 |
| Weiss Asset Management Event Quant | New | +23.8K | — | $3.9M | 0.1% | 56 |
| Capula Management Quant Macro | Sold Out | -515 | -100.0% | $84.2K | 0.0% | 56 |
| AQR Capital Management Long/Short Quant | Increased | +1.89M | +328.6% | $308.5M | 0.1% | 55 |
Most significant buyers
By move score, not size.
- Ilex Capital Partners
- MILLENNIUM MANAGEMENT LLC
- Qube Research & Technologies Ltd
- Alyeska Investment Group, L.P.
- WORLDQUANT MILLENNIUM ADVISORS LLC
Most significant sellers
By move score, not size.
- Heard Capital
- ExodusPoint Capital Management
- Capula Management
- Edgestream Partners
- TWO SIGMA INVESTMENTS, LP
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| Ilex Capital Partners | 2 | 157.4K | 0 | +157.4K | — | 0.5% | New | 61 |
| MILLENNIUM MANAGEMENT LLC | 2 | 2.2M | 1.0M | +1.17M | +114.5% | 0.3% | Increased | 61 |
| Heard Capital | 2 | 804.8K | 1.1M | -307.3K | -27.6% | 5.6% | Reduced | 60 |
| Qube Research & Technologies Ltd | 2 | 1.2M | 15.9K | +1.14M | +7134.1% | 0.2% | Increased | 58 |
| Alyeska Investment Group, L.P. | 2 | 828.4K | 303.8K | +524.6K | +172.7% | 0.4% | Increased | 58 |
| WORLDQUANT MILLENNIUM ADVISORS LLC | 2 | 578.1K | 138.9K | +439.2K | +316.3% | 0.3% | Increased | 57 |
| ExodusPoint Capital Management | 3 | 0 | 119.4K | -119.4K | -100.0% | 0.0% | Sold Out | 57 |
| Weiss Asset Management | 2 | 23.8K | 0 | +23.8K | — | 0.1% | New | 56 |
| Capula Management | 2 | 0 | 515 | -515 | -100.0% | 0.0% | Sold Out | 56 |
| AQR Capital Management | 3 | 2.5M | 574.1K | +1.89M | +328.6% | 0.1% | Increased | 55 |
| Quadrature Capital | 3 | 34.3K | 0 | +34.3K | — | 0.1% | New | 55 |
| Magnetar Capital | 2 | 4.3K | 0 | +4.3K | — | 0.0% | New | 55 |
| Holocene Advisors, LP | 2 | 281.1K | 29.9K | +251.3K | +840.6% | 0.1% | Increased | 54 |
| Schonfeld Strategic Advisors | 3 | 37.5K | 0 | +37.5K | — | 0.0% | New | 53 |
| Squarepoint Ops LLC | 2 | 290.3K | 113.0K | +177.3K | +156.9% | 0.1% | Increased | 53 |
| Gotham Asset Management, LLC | 2 | 262.6K | 36.3K | +226.3K | +623.5% | 0.1% | Increased | 53 |
| LMR Partners | 3 | 4.5K | 0 | +4.5K | — | 0.0% | New | 53 |
| Engineers Gate | 4 | 72.7K | 0 | +72.7K | — | 0.2% | New | 53 |
| MARSHALL WACE, LLP | 2 | 1.3M | 751.3K | +591.7K | +78.8% | 0.3% | Increased | 52 |
| Edgestream Partners | 4 | 0 | 39.6K | -39.6K | -100.0% | 0.0% | Sold Out | 52 |
| Boothbay Fund Management | 4 | 285.5K | 1.2K | +284.2K | +23032.7% | 1.0% | Increased | 51 |
| TWO SIGMA INVESTMENTS, LP | 2 | 431.9K | 1.2M | -795.0K | -64.8% | 0.1% | Reduced | 51 |
| Hudson Bay Capital Management | 3 | 3.1K | 70.4K | -67.3K | -95.5% | 0.0% | Reduced | 51 |
| Walleye Capital | 3 | 176.1K | 16.7K | +159.4K | +955.5% | 0.2% | Increased | 50 |
| J. Goldman & Co. | 3 | 1.5K | 0 | +1.5K | — | 0.0% | New | 50 |
| Graham Capital Management | 3 | 4.4K | 0 | +4.4K | — | 0.0% | New | 49 |
| Tudor Investment Corporation | 2 | 197.8K | 105.1K | +92.8K | +88.3% | 0.2% | Increased | 49 |
| Centiva Capital | 4 | 2.7K | 0 | +2.7K | — | 0.0% | New | 48 |
| CITADEL ADVISORS LLC | 1 | 1.4M | 876.8K | +494.5K | +56.4% | 0.1% | Increased | 48 |
| Lighthouse Investment Partners | 3 | 1.8K | 40.6K | -38.8K | -95.5% | 0.0% | Reduced | 47 |
| Parallax Volatility Advisers | 3 | 19.6K | 912 | +18.7K | +2046.6% | 0.2% | Increased | 47 |
| Winton Group | 4 | 34.4K | 2.9K | +31.5K | +1087.4% | 0.2% | Increased | 45 |
| Brevan Howard Capital Management | 3 | 20.6K | 10.6K | +10.0K | +94.4% | 0.1% | Increased | 44 |
| Cinctive Capital Management | 3 | 5.6K | 1.8K | +3.8K | +215.3% | 0.0% | Increased | 44 |
| Point72 Asset Management, L.P. | 1 | 853.7K | 1.2M | -351.6K | -29.2% | 0.2% | Reduced | 44 |
| Bridgewater Associates | 1 | 35.9K | 56.9K | -21.0K | -36.9% | 0.0% | Reduced | 41 |
| Voloridge Investment Management | 2 | 480.5K | 791.4K | -310.9K | -39.3% | 0.3% | Reduced | 41 |
| Verition Fund Management | 2 | 253.3K | 185.7K | +67.7K | +36.4% | 0.4% | Increased | 38 |
| Balyasny Asset Management L.P. | 2 | 537.4K | 435.4K | +102.0K | +23.4% | 0.2% | Increased | 37 |
| D. E. Shaw & Co., Inc. | 1 | 1.0M | 1.1M | -103.2K | -9.1% | 0.1% | Reduced | 34 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 2 | 485.2K | 419.4K | +65.8K | +15.7% | 0.1% | Increased | 33 |
| Y-Intercept | 4 | 14.5K | 29.8K | -15.3K | -51.5% | 0.0% | Reduced | 33 |
| Man Group | 3 | 989.5K | 826.1K | +163.3K | +19.8% | 0.3% | Increased | 31 |
| Capital Fund Management | 3 | 134.4K | 171.4K | -37.0K | -21.6% | 0.2% | Reduced | 30 |
| Jain Global | 3 | 164.0K | 191.6K | -27.5K | -14.4% | 0.4% | Reduced | 29 |
| Capstone Investment Advisors | 3 | 2.0K | 1.8K | +170 | +9.4% | 0.0% | Increased | 24 |
| Quantbot Technologies | 4 | 35.8K | 46.4K | -10.7K | -23.0% | 0.2% | Reduced | 24 |
| Caxton Associates | 3 | 1.2K | 1.2K | +48 | +4.0% | 0.0% | Increased | 23 |
| Systematic Alpha Investments | 2 | 1.8K | 1.8K | 0 | +0.0% | 0.0% | Unchanged | 18 |
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.