MTZ MasTec Inc.
MasTec Inc. (MTZ) 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 |
|---|---|---|---|---|---|---|
| Third Point Activist Event | Reduced | -30.0K | -9.4% | $12.5M | 2.6% | 66 |
| CITADEL ADVISORS LLC Quant | Sold Out | -279.8K | -100.0% | $116.4M | 0.0% | 66 |
| Maplelane Capital Long/Short | New | +88.8K | — | $36.9M | 1.5% | 65 |
| Farallon Capital Management Event Value | Sold Out | -17.0K | -100.0% | $7.1M | 0.0% | 62 |
| Zimmer Partners Long/Short | New | +85.0K | — | $35.4M | 0.8% | 62 |
| Anomaly Capital Management Long/Short | Increased | +82.4K | +36.7% | $34.3M | 4.9% | 61 |
| Holocene Advisors, LP | Sold Out | -101.7K | -100.0% | $42.3M | 0.0% | 60 |
| Peconic Partners Long/Short Value | Increased | +100.0K | +2.8% | $41.6M | 20.3% | 60 |
| Rokos Capital Management Macro | Sold Out | -6.8K | -100.0% | $2.8M | 0.0% | 58 |
| D. E. Shaw & Co., Inc. Quant | Increased | +126.9K | +237.8% | $52.8M | 0.1% | 58 |
Most significant buyers
By move score, not size.
- Maplelane Capital
- Zimmer Partners
- Anomaly Capital Management
- Peconic Partners
- D. E. Shaw & Co., Inc.
Most significant sellers
By move score, not size.
- Third Point
- CITADEL ADVISORS LLC
- Farallon Capital Management
- Holocene Advisors, LP
- Rokos Capital Management
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| Third Point | 1 | 290.0K | 320.0K | -30.0K | -9.4% | 2.6% | Reduced | 66 |
| CITADEL ADVISORS LLC | 1 | 0 | 279.8K | -279.8K | -100.0% | 0.0% | Sold Out | 66 |
| Maplelane Capital | 2 | 88.8K | 0 | +88.8K | — | 1.5% | New | 65 |
| Farallon Capital Management | 1 | 0 | 17.0K | -17.0K | -100.0% | 0.0% | Sold Out | 62 |
| Zimmer Partners | 2 | 85.0K | 0 | +85.0K | — | 0.8% | New | 62 |
| Anomaly Capital Management | 2 | 306.9K | 224.5K | +82.4K | +36.7% | 4.9% | Increased | 61 |
| Holocene Advisors, LP | 2 | 0 | 101.7K | -101.7K | -100.0% | 0.0% | Sold Out | 60 |
| Peconic Partners | 1 | 3.7M | 3.6M | +100.0K | +2.8% | 20.3% | Increased | 60 |
| Rokos Capital Management | 2 | 0 | 6.8K | -6.8K | -100.0% | 0.0% | Sold Out | 58 |
| D. E. Shaw & Co., Inc. | 1 | 180.2K | 53.4K | +126.9K | +237.8% | 0.1% | Increased | 58 |
| WORLDQUANT MILLENNIUM ADVISORS LLC | 2 | 7.8K | 0 | +7.8K | — | 0.0% | New | 58 |
| MILLENNIUM MANAGEMENT LLC | 2 | 43.9K | 503.2K | -459.3K | -91.3% | 0.0% | Reduced | 58 |
| Lone Pine Capital | 1 | 1.3M | 1.5M | -185.9K | -12.1% | 3.4% | Reduced | 58 |
| Balyasny Asset Management L.P. | 2 | 91 | 128.6K | -128.5K | -99.9% | 0.0% | Reduced | 58 |
| ExodusPoint Capital Management | 3 | 0 | 56.0K | -56.0K | -100.0% | 0.0% | Sold Out | 57 |
| Jain Global | 3 | 0 | 37.7K | -37.7K | -100.0% | 0.0% | Sold Out | 57 |
| MARSHALL WACE, LLP | 2 | 0 | 852 | -852 | -100.0% | 0.0% | Sold Out | 56 |
| Woodline Partners LP | 2 | 3.5K | 0 | +3.5K | — | 0.0% | New | 56 |
| Electron Capital Partners | 2 | 620.2K | 713.0K | -92.8K | -13.0% | 10.5% | Reduced | 55 |
| Bridgewater Associates | 1 | 7.0K | 40.1K | -33.2K | -82.6% | 0.0% | Reduced | 55 |
| Moore Capital Management | 3 | 9.5K | 0 | +9.5K | — | 0.1% | New | 55 |
| Alyeska Investment Group, L.P. | 2 | 2.5K | 87.5K | -85.0K | -97.1% | 0.0% | Reduced | 54 |
| Point72 Asset Management, L.P. | 1 | 156.3K | 433.1K | -276.7K | -63.9% | 0.1% | Reduced | 54 |
| Caption Management | 3 | 13.2K | 0 | +13.2K | — | 0.2% | New | 53 |
| Caxton Associates | 3 | 2.1K | 0 | +2.1K | — | 0.0% | New | 53 |
| Armistice Capital | 3 | 2.1K | 0 | +2.1K | — | 0.0% | New | 53 |
| Squarepoint Ops LLC | 2 | 24.5K | 225.7K | -201.2K | -89.1% | 0.0% | Reduced | 53 |
| Graham Capital Management | 3 | 7.4K | 0 | +7.4K | — | 0.1% | New | 52 |
| Edgestream Partners | 4 | 12.6K | 0 | +12.6K | — | 0.2% | New | 52 |
| Forest Avenue Capital Management | 2 | 248.6K | 269.9K | -21.2K | -7.9% | 4.3% | Reduced | 52 |
| Scopus Asset Management | 2 | 62.9K | 35.9K | +27.1K | +75.5% | 0.7% | Increased | 50 |
| Trexquant Investment | 3 | 4.0K | 92.1K | -88.1K | -95.7% | 0.0% | Reduced | 49 |
| J. Goldman & Co. | 3 | 4.0K | 35.0K | -31.0K | -88.7% | 0.1% | Reduced | 48 |
| Brevan Howard Capital Management | 3 | 22.6K | 94.7K | -72.1K | -76.1% | 0.2% | Reduced | 44 |
| Quantbot Technologies | 4 | 8.2K | 4.0K | +4.3K | +107.9% | 0.1% | Increased | 42 |
| Walleye Capital | 3 | 19.5K | 59.2K | -39.7K | -67.1% | 0.1% | Reduced | 42 |
| Samlyn Capital | 2 | 100.6K | 138.1K | -37.4K | -27.1% | 0.7% | Reduced | 41 |
| Merewether Investment Management | 2 | 190.2K | 223.1K | -32.8K | -14.7% | 1.5% | Reduced | 41 |
| COATUE MANAGEMENT LLC | 1 | 517.3K | 583.6K | -66.3K | -11.4% | 0.4% | Reduced | 40 |
| Voleon Capital Management | 3 | 6.4K | 18.9K | -12.5K | -66.2% | 0.0% | Reduced | 39 |
| LMR Partners | 3 | 19.5K | 41.1K | -21.6K | -52.5% | 0.1% | Reduced | 38 |
| Interval Partners | 3 | 3.5K | 2.2K | +1.3K | +60.4% | 0.0% | Increased | 37 |
| TWO SIGMA INVESTMENTS, LP | 2 | 125.1K | 100.3K | +24.7K | +24.7% | 0.0% | Increased | 36 |
| Boothbay Fund Management | 4 | 5.9K | 15.9K | -10.0K | -62.9% | 0.1% | Reduced | 36 |
| Centiva Capital | 4 | 900 | 2.9K | -2.0K | -68.9% | 0.0% | Reduced | 35 |
| Qube Research & Technologies Ltd | 2 | 409.2K | 485.4K | -76.2K | -15.7% | 0.2% | Reduced | 33 |
| Hudson Bay Capital Management | 3 | 13.6K | 11.1K | +2.5K | +22.7% | 0.0% | Increased | 30 |
| Engineers Gate | 4 | 6.2K | 10.5K | -4.3K | -40.7% | 0.0% | Reduced | 29 |
| Gotham Asset Management, LLC | 2 | 151.6K | 170.8K | -19.2K | -11.2% | 0.2% | Reduced | 29 |
| Man Group | 3 | 7.5K | 9.4K | -1.8K | -19.5% | 0.0% | Reduced | 26 |
| Schonfeld Strategic Advisors | 3 | 21.8K | 24.3K | -2.4K | -10.0% | 0.1% | Reduced | 25 |
| AQR Capital Management | 3 | 657.6K | 660.1K | -2.5K | -0.4% | 0.1% | Reduced | 22 |
| Hill City Capital | 1 | 2.2M | 2.2M | 0 | +0.0% | 21.9% | Unchanged | 47 |
| Voloridge Investment Management | 2 | 45.0K | 45.0K | 0 | +0.0% | 0.1% | Unchanged | 18 |
| Systematic Alpha Investments | 2 | 629 | 629 | 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.