HSTM HealthStream, Inc.
HealthStream, Inc. (HSTM) 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 |
|---|---|---|---|---|---|---|
| Balyasny Asset Management L.P. | Sold Out | -15.0K | -100.0% | $409.6K | 0.0% | 57 |
| Squarepoint Ops LLC Quant | New | +8.1K | — | $222.1K | 0.0% | 54 |
| Verition Fund Management Event Long/Short | Sold Out | -22.5K | -100.0% | $613.2K | 0.0% | 54 |
| Jain Global Long/Short Quant | New | +12.0K | — | $327.0K | 0.0% | 52 |
| Schonfeld Strategic Advisors Long/Short Quant | Sold Out | -12.7K | -100.0% | $345.3K | 0.0% | 51 |
| CITADEL ADVISORS LLC Quant | Reduced | -68.4K | -86.8% | $1.9M | 0.0% | 50 |
| Brevan Howard Capital Management Macro | Sold Out | -12.7K | -100.0% | $346.7K | 0.0% | 49 |
| Graham Capital Management Quant Macro | New | +19.4K | — | $528.9K | 0.0% | 49 |
| Aquatic Capital Management Quant | Sold Out | -10.2K | -100.0% | $276.9K | 0.0% | 48 |
| Man Group Event Long/Short | Increased | +132.0K | +1212.0% | $3.6M | 0.0% | 48 |
Most significant buyers
By move score, not size.
- Squarepoint Ops LLC
- Jain Global
- Graham Capital Management
- Man Group
- AQR Capital Management
Most significant sellers
By move score, not size.
- Balyasny Asset Management L.P.
- Verition Fund Management
- Schonfeld Strategic Advisors
- CITADEL ADVISORS LLC
- Brevan Howard Capital Management
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| Balyasny Asset Management L.P. | 2 | 0 | 15.0K | -15.0K | -100.0% | 0.0% | Sold Out | 57 |
| Squarepoint Ops LLC | 2 | 8.1K | 0 | +8.1K | — | 0.0% | New | 54 |
| Verition Fund Management | 2 | 0 | 22.5K | -22.5K | -100.0% | 0.0% | Sold Out | 54 |
| Jain Global | 3 | 12.0K | 0 | +12.0K | — | 0.0% | New | 52 |
| Schonfeld Strategic Advisors | 3 | 0 | 12.7K | -12.7K | -100.0% | 0.0% | Sold Out | 51 |
| CITADEL ADVISORS LLC | 1 | 10.4K | 78.8K | -68.4K | -86.8% | 0.0% | Reduced | 50 |
| Brevan Howard Capital Management | 3 | 0 | 12.7K | -12.7K | -100.0% | 0.0% | Sold Out | 49 |
| Graham Capital Management | 3 | 19.4K | 0 | +19.4K | — | 0.0% | New | 49 |
| Aquatic Capital Management | 4 | 0 | 10.2K | -10.2K | -100.0% | 0.0% | Sold Out | 48 |
| Man Group | 3 | 142.9K | 10.9K | +132.0K | +1212.0% | 0.0% | Increased | 48 |
| Quantbot Technologies | 4 | 0 | 54.2K | -54.2K | -100.0% | 0.0% | Sold Out | 47 |
| AQR Capital Management | 3 | 240.2K | 58.8K | +181.4K | +308.3% | 0.0% | Increased | 47 |
| MILLENNIUM MANAGEMENT LLC | 2 | 121.3K | 175.6K | -54.3K | -30.9% | 0.0% | Reduced | 36 |
| Walleye Capital | 3 | 13.9K | 34.0K | -20.1K | -59.1% | 0.0% | Reduced | 35 |
| D. E. Shaw & Co., Inc. | 1 | 9.4K | 13.6K | -4.2K | -31.0% | 0.0% | Reduced | 34 |
| RENAISSANCE TECHNOLOGIES LLC | 1 | 423.0K | 477.8K | -54.8K | -11.5% | 0.0% | Reduced | 32 |
| TWO SIGMA INVESTMENTS, LP | 2 | 805.6K | 844.4K | -38.8K | -4.6% | 0.0% | Reduced | 29 |
| Engineers Gate | 4 | 77.0K | 88.8K | -11.7K | -13.2% | 0.0% | Reduced | 20 |
| MARSHALL WACE, LLP | 2 | 32.4K | 32.4K | 0 | +0.0% | 0.0% | Unchanged | 20 |
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.