SIRI Sirius XM Holdings Inc.
Sirius XM Holdings Inc. (SIRI) 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 |
|---|---|---|---|---|---|---|
| J. Goldman & Co. Long/Short | New | +2.92M | — | $86.3M | 3.4% | 73 |
| Gates Capital Management Event Value | Increased | +1.80M | +65.5% | $53.1M | 4.6% | 70 |
| Point72 Asset Management, L.P. | Sold Out | -355.1K | -100.0% | $10.5M | 0.0% | 63 |
| MILLENNIUM MANAGEMENT LLC | Sold Out | -509.1K | -100.0% | $15.0M | 0.0% | 61 |
| D. E. Shaw & Co., Inc. Quant | Sold Out | -101.5K | -100.0% | $3.0M | 0.0% | 60 |
| MARSHALL WACE, LLP Long/Short | Sold Out | -50.5K | -100.0% | $1.5M | 0.0% | 58 |
| Holocene Advisors, LP | Sold Out | -106.8K | -100.0% | $3.2M | 0.0% | 58 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Sold Out | -106.4K | -100.0% | $3.1M | 0.0% | 58 |
| Maverick Capital Long/Short Growth | Sold Out | -31.6K | -100.0% | $933.5K | 0.0% | 57 |
| Magnetar Capital Event Quant | Sold Out | -55.1K | -100.0% | $1.6M | 0.0% | 56 |
Most significant buyers
By move score, not size.
- J. Goldman & Co.
- Gates Capital Management
- Weiss Asset Management
- Caxton Associates
- Tudor Investment Corporation
Most significant sellers
By move score, not size.
- Point72 Asset Management, L.P.
- MILLENNIUM MANAGEMENT LLC
- D. E. Shaw & Co., Inc.
- MARSHALL WACE, LLP
- Holocene Advisors, LP
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| J. Goldman & Co. | 3 | 2.9M | 0 | +2.92M | — | 3.4% | New | 73 |
| Gates Capital Management | 2 | 4.5M | 2.7M | +1.80M | +65.5% | 4.6% | Increased | 70 |
| Point72 Asset Management, L.P. | 1 | 0 | 355.1K | -355.1K | -100.0% | 0.0% | Sold Out | 63 |
| MILLENNIUM MANAGEMENT LLC | 2 | 0 | 509.1K | -509.1K | -100.0% | 0.0% | Sold Out | 61 |
| D. E. Shaw & Co., Inc. | 1 | 0 | 101.5K | -101.5K | -100.0% | 0.0% | Sold Out | 60 |
| MARSHALL WACE, LLP | 2 | 0 | 50.5K | -50.5K | -100.0% | 0.0% | Sold Out | 58 |
| Holocene Advisors, LP | 2 | 0 | 106.8K | -106.8K | -100.0% | 0.0% | Sold Out | 58 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 2 | 0 | 106.4K | -106.4K | -100.0% | 0.0% | Sold Out | 58 |
| Maverick Capital | 2 | 0 | 31.6K | -31.6K | -100.0% | 0.0% | Sold Out | 57 |
| Magnetar Capital | 2 | 0 | 55.1K | -55.1K | -100.0% | 0.0% | Sold Out | 56 |
| Weiss Asset Management | 2 | 40.9K | 0 | +40.9K | — | 0.0% | New | 56 |
| Caxton Associates | 3 | 85.9K | 0 | +85.9K | — | 0.0% | New | 55 |
| LMR Partners | 3 | 0 | 186.0K | -186.0K | -100.0% | 0.0% | Sold Out | 55 |
| Jain Global | 3 | 0 | 56.4K | -56.4K | -100.0% | 0.0% | Sold Out | 54 |
| Tudor Investment Corporation | 2 | 8.5K | 0 | +8.5K | — | 0.0% | New | 53 |
| Squarepoint Ops LLC | 2 | 1.6M | 45.0K | +1.60M | +3565.7% | 0.1% | Increased | 53 |
| Lighthouse Investment Partners | 3 | 0 | 58.9K | -58.9K | -100.0% | 0.0% | Sold Out | 53 |
| Brevan Howard Capital Management | 3 | 54.1K | 0 | +54.1K | — | 0.0% | New | 51 |
| Graham Capital Management | 3 | 34.7K | 0 | +34.7K | — | 0.0% | New | 51 |
| Walleye Capital | 3 | 0 | 896 | -896 | -100.0% | 0.0% | Sold Out | 51 |
| Y-Intercept | 4 | 0 | 43.0K | -43.0K | -100.0% | 0.0% | Sold Out | 50 |
| Verition Fund Management | 2 | 174.2K | 33.0K | +141.2K | +427.9% | 0.0% | Increased | 50 |
| CenterBook Partners | 4 | 16.2K | 0 | +16.2K | — | 0.0% | New | 49 |
| Centiva Capital | 4 | 11.2K | 0 | +11.2K | — | 0.0% | New | 48 |
| ExodusPoint Capital Management | 3 | 531.9K | 269.7K | +262.3K | +97.3% | 0.1% | Increased | 48 |
| Bridgewater Associates | 1 | 148.3K | 91.3K | +57.0K | +62.3% | 0.0% | Increased | 48 |
| Balyasny Asset Management L.P. | 2 | 76.7K | 283.3K | -206.6K | -72.9% | 0.0% | Reduced | 46 |
| Man Group | 3 | 107.8K | 55.8K | +52.0K | +93.2% | 0.0% | Increased | 46 |
| Winton Group | 4 | 298.6K | 15.7K | +282.9K | +1801.7% | 0.3% | Increased | 46 |
| Quantbot Technologies | 4 | 0 | 26.1K | -26.1K | -100.0% | 0.0% | Sold Out | 45 |
| Engineers Gate | 4 | 303.0K | 58.3K | +244.7K | +419.8% | 0.1% | Increased | 44 |
| TWO SIGMA INVESTMENTS, LP | 2 | 792.0K | 1.8M | -985.3K | -55.4% | 0.0% | Reduced | 44 |
| Whitebox Advisors | 2 | 74.4K | 153.9K | -79.5K | -51.6% | 0.1% | Reduced | 41 |
| Readystate Asset Management | 3 | 199.0K | 439.3K | -240.3K | -54.7% | 0.4% | Reduced | 40 |
| HBK Investments | 1 | 848.8K | 1.2M | -315.4K | -27.1% | 0.3% | Reduced | 39 |
| CastleKnight Management | 3 | 256.9K | 413.7K | -156.8K | -37.9% | 0.3% | Reduced | 33 |
| CITADEL ADVISORS LLC | 1 | 3.3M | 3.3M | +48.9K | +1.5% | 0.1% | Increased | 29 |
| Gotham Asset Management, LLC | 2 | 1.4M | 1.2M | +144.7K | +11.7% | 0.1% | Increased | 29 |
| AQR Capital Management | 3 | 3.4M | 3.0M | +407.4K | +13.6% | 0.0% | Increased | 27 |
| Empyrean Capital Partners | 2 | 692.8K | 692.8K | 0 | +0.0% | 0.8% | Unchanged | 23 |
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.