VICR Vicor Corporation
Vicor Corporation (VICR) 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 |
|---|---|---|---|---|---|---|
| RENAISSANCE TECHNOLOGIES LLC Quant | Sold Out | -47.3K | -100.0% | $18.0M | 0.0% | 62 |
| Balyasny Asset Management L.P. | New | +11.9K | — | $4.5M | 0.0% | 59 |
| Qube Research & Technologies Ltd Quant | Sold Out | -89.6K | -100.0% | $34.0M | 0.0% | 59 |
| Maverick Capital Long/Short Growth | New | +1.8K | — | $685.5K | 0.0% | 57 |
| MARSHALL WACE, LLP Long/Short | Sold Out | -2.1K | -100.0% | $797.5K | 0.0% | 56 |
| Verition Fund Management Event Long/Short | Sold Out | -3.8K | -100.0% | $1.4M | 0.0% | 56 |
| Hudson Bay Capital Management Event | New | +3.2K | — | $1.2M | 0.0% | 55 |
| Caxton Associates Macro | New | +3.2K | — | $1.2M | 0.0% | 55 |
| Magnetar Capital Event Quant | New | +1.1K | — | $410.2K | 0.0% | 54 |
| D. E. Shaw & Co., Inc. Quant | Increased | +6.1K | +307.2% | $2.3M | 0.0% | 54 |
Most significant buyers
By move score, not size.
- Balyasny Asset Management L.P.
- Maverick Capital
- Hudson Bay Capital Management
- Caxton Associates
- Magnetar Capital
Most significant sellers
By move score, not size.
- RENAISSANCE TECHNOLOGIES LLC
- Qube Research & Technologies Ltd
- MARSHALL WACE, LLP
- Verition Fund Management
- Winton Group
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| RENAISSANCE TECHNOLOGIES LLC | 1 | 0 | 47.3K | -47.3K | -100.0% | 0.0% | Sold Out | 62 |
| Balyasny Asset Management L.P. | 2 | 11.9K | 0 | +11.9K | — | 0.0% | New | 59 |
| Qube Research & Technologies Ltd | 2 | 0 | 89.6K | -89.6K | -100.0% | 0.0% | Sold Out | 59 |
| Maverick Capital | 2 | 1.8K | 0 | +1.8K | — | 0.0% | New | 57 |
| MARSHALL WACE, LLP | 2 | 0 | 2.1K | -2.1K | -100.0% | 0.0% | Sold Out | 56 |
| Verition Fund Management | 2 | 0 | 3.8K | -3.8K | -100.0% | 0.0% | Sold Out | 56 |
| Hudson Bay Capital Management | 3 | 3.2K | 0 | +3.2K | — | 0.0% | New | 55 |
| Caxton Associates | 3 | 3.2K | 0 | +3.2K | — | 0.0% | New | 55 |
| Magnetar Capital | 2 | 1.1K | 0 | +1.1K | — | 0.0% | New | 54 |
| D. E. Shaw & Co., Inc. | 1 | 8.1K | 2.0K | +6.1K | +307.2% | 0.0% | Increased | 54 |
| Walleye Capital | 3 | 9.2K | 0 | +9.2K | — | 0.0% | New | 53 |
| Schonfeld Strategic Advisors | 3 | 12.4K | 0 | +12.4K | — | 0.0% | New | 53 |
| AQR Capital Management | 3 | 449.5K | 148.3K | +301.2K | +203.1% | 0.1% | Increased | 53 |
| LMR Partners | 3 | 2.0K | 0 | +2.0K | — | 0.0% | New | 53 |
| Winton Group | 4 | 0 | 8.5K | -8.5K | -100.0% | 0.0% | Sold Out | 51 |
| MILLENNIUM MANAGEMENT LLC | 2 | 62.8K | 221.9K | -159.1K | -71.7% | 0.0% | Reduced | 50 |
| TWO SIGMA INVESTMENTS, LP | 2 | 22.2K | 11.8K | +10.5K | +89.1% | 0.0% | Increased | 50 |
| Trexquant Investment | 3 | 48.1K | 6.2K | +42.0K | +682.7% | 0.1% | Increased | 49 |
| Capital Fund Management | 3 | 38.6K | 15.6K | +23.0K | +146.8% | 0.1% | Increased | 49 |
| ExodusPoint Capital Management | 3 | 25.5K | 11.9K | +13.6K | +114.1% | 0.1% | Increased | 49 |
| CITADEL ADVISORS LLC | 1 | 13.4K | 46.4K | -33.0K | -71.1% | 0.0% | Reduced | 49 |
| Point72 Asset Management, L.P. | 1 | 10.0K | 29.1K | -19.1K | -65.6% | 0.0% | Reduced | 47 |
| Bridgewater Associates | 1 | 18.4K | 33.2K | -14.8K | -44.5% | 0.0% | Reduced | 43 |
| Engineers Gate | 4 | 994 | 25.7K | -24.7K | -96.1% | 0.0% | Reduced | 43 |
| Y-Intercept | 4 | 2.5K | 22.5K | -20.0K | -88.8% | 0.0% | Reduced | 42 |
| Tudor Investment Corporation | 2 | 83.7K | 137.3K | -53.6K | -39.1% | 0.2% | Reduced | 37 |
| Man Group | 3 | 16.2K | 35.9K | -19.6K | -54.8% | 0.0% | Reduced | 37 |
| Portolan Capital Management | 3 | 38.1K | 26.7K | +11.4K | +42.8% | 0.5% | Increased | 36 |
| Jain Global | 3 | 4.4K | 3.0K | +1.4K | +48.2% | 0.0% | Increased | 33 |
| Gotham Asset Management, LLC | 2 | 8.4K | 11.3K | -2.9K | -25.5% | 0.0% | Reduced | 32 |
| Capstone Investment Advisors | 3 | 1.1K | 1.5K | -406 | -26.7% | 0.0% | Reduced | 29 |
| Weiss Asset Management | 2 | 27.4K | 28.5K | -1.1K | -3.7% | 0.2% | Reduced | 25 |
| Squarepoint Ops LLC | 2 | 8.7K | 8.5K | +128 | +1.5% | 0.0% | Increased | 24 |
| Brevan Howard Capital Management | 3 | 5.5K | 4.5K | +911 | +20.1% | 0.0% | Increased | 24 |
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.