ALGM Allegro MicroSystems, Inc.
Allegro MicroSystems, Inc. (ALGM) 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 |
|---|---|---|---|---|---|---|
| Bridgewater Associates Quant Macro | Sold Out | -16.6K | -100.0% | $1.2M | 0.0% | 63 |
| CITADEL ADVISORS LLC Quant | Sold Out | -399.4K | -100.0% | $27.8M | 0.0% | 62 |
| RENAISSANCE TECHNOLOGIES LLC Quant | Sold Out | -123.9K | -100.0% | $8.6M | 0.0% | 60 |
| MILLENNIUM MANAGEMENT LLC | Sold Out | -28.1K | -100.0% | $2.0M | 0.0% | 59 |
| Holocene Advisors, LP | New | +63.0K | — | $4.4M | 0.0% | 58 |
| MARSHALL WACE, LLP Long/Short | Reduced | -726.5K | -98.2% | $50.6M | 0.0% | 56 |
| Tudor Investment Corporation Macro | Sold Out | -37.1K | -100.0% | $2.6M | 0.0% | 56 |
| Trexquant Investment Quant | Sold Out | -133.8K | -100.0% | $9.3M | 0.0% | 53 |
| Edgestream Partners Quant | New | +92.2K | — | $6.4M | 0.2% | 52 |
| Brevan Howard Capital Management Macro | Sold Out | -95.1K | -100.0% | $6.6M | 0.0% | 52 |
Most significant buyers
By move score, not size.
- Holocene Advisors, LP
- Edgestream Partners
- AQR Capital Management
- Balyasny Asset Management L.P.
- Gotham Asset Management, LLC
Most significant sellers
By move score, not size.
- Bridgewater Associates
- CITADEL ADVISORS LLC
- RENAISSANCE TECHNOLOGIES LLC
- MILLENNIUM MANAGEMENT LLC
- MARSHALL WACE, LLP
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| Bridgewater Associates | 1 | 0 | 16.6K | -16.6K | -100.0% | 0.0% | Sold Out | 63 |
| CITADEL ADVISORS LLC | 1 | 0 | 399.4K | -399.4K | -100.0% | 0.0% | Sold Out | 62 |
| RENAISSANCE TECHNOLOGIES LLC | 1 | 0 | 123.9K | -123.9K | -100.0% | 0.0% | Sold Out | 60 |
| MILLENNIUM MANAGEMENT LLC | 2 | 0 | 28.1K | -28.1K | -100.0% | 0.0% | Sold Out | 59 |
| Holocene Advisors, LP | 2 | 63.0K | 0 | +63.0K | — | 0.0% | New | 58 |
| MARSHALL WACE, LLP | 2 | 13.3K | 739.8K | -726.5K | -98.2% | 0.0% | Reduced | 56 |
| Tudor Investment Corporation | 2 | 0 | 37.1K | -37.1K | -100.0% | 0.0% | Sold Out | 56 |
| Trexquant Investment | 3 | 0 | 133.8K | -133.8K | -100.0% | 0.0% | Sold Out | 53 |
| Edgestream Partners | 4 | 92.2K | 0 | +92.2K | — | 0.2% | New | 52 |
| Brevan Howard Capital Management | 3 | 0 | 95.1K | -95.1K | -100.0% | 0.0% | Sold Out | 52 |
| Schonfeld Strategic Advisors | 3 | 0 | 11.7K | -11.7K | -100.0% | 0.0% | Sold Out | 51 |
| Boothbay Fund Management | 4 | 0 | 51.4K | -51.4K | -100.0% | 0.0% | Sold Out | 51 |
| CenterBook Partners | 4 | 0 | 21.8K | -21.8K | -100.0% | 0.0% | Sold Out | 51 |
| Y-Intercept | 4 | 0 | 45.1K | -45.1K | -100.0% | 0.0% | Sold Out | 50 |
| Maverick Capital | 2 | 10.1K | 42.2K | -32.1K | -76.1% | 0.0% | Reduced | 47 |
| Walleye Capital | 3 | 2.6K | 130.7K | -128.1K | -98.0% | 0.0% | Reduced | 47 |
| Man Group | 3 | 95.1K | 306.3K | -211.2K | -69.0% | 0.0% | Reduced | 42 |
| TWO SIGMA INVESTMENTS, LP | 2 | 344.0K | 639.8K | -295.8K | -46.2% | 0.0% | Reduced | 41 |
| ExodusPoint Capital Management | 3 | 15.3K | 44.9K | -29.6K | -66.0% | 0.0% | Reduced | 40 |
| Engineers Gate | 4 | 6.9K | 36.5K | -29.6K | -81.0% | 0.0% | Reduced | 39 |
| Graham Capital Management | 3 | 3.6K | 17.0K | -13.4K | -78.7% | 0.0% | Reduced | 38 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 2 | 1.1M | 1.5M | -342.8K | -23.4% | 0.1% | Reduced | 35 |
| AQR Capital Management | 3 | 493.8K | 345.1K | +148.6K | +43.1% | 0.0% | Increased | 34 |
| Balyasny Asset Management L.P. | 2 | 267.3K | 245.9K | +21.4K | +8.7% | 0.0% | Increased | 31 |
| Quantbot Technologies | 4 | 1.3K | 2.4K | -1.1K | -47.2% | 0.0% | Reduced | 26 |
| Gotham Asset Management, LLC | 2 | 325.4K | 312.2K | +13.2K | +4.2% | 0.1% | Increased | 25 |
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.