PDFS PDF Solutions, Inc.
PDF Solutions, Inc. (PDFS) 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 |
|---|---|---|---|---|---|---|
| Atreides Management Long/Short Growth | New | +658.5K | — | $46.6M | 0.4% | 67 |
| Point72 Asset Management, L.P. | New | +598.9K | — | $42.4M | 0.1% | 64 |
| Bridgewater Associates Quant Macro | New | +4.8K | — | $340.3K | 0.0% | 61 |
| MILLENNIUM MANAGEMENT LLC | New | +45.9K | — | $3.3M | 0.0% | 59 |
| TWO SIGMA INVESTMENTS, LP Quant | New | +5.6K | — | $396.4K | 0.0% | 57 |
| Weiss Asset Management Event Quant | New | +16.1K | — | $1.1M | 0.0% | 56 |
| CITADEL ADVISORS LLC Quant | Increased | +49.8K | +144.1% | $3.5M | 0.0% | 54 |
| Voloridge Investment Management Quant | Sold Out | -11.6K | -100.0% | $820.0K | 0.0% | 53 |
| Jain Global Long/Short Quant | New | +9.2K | — | $651.3K | 0.0% | 52 |
| CenterBook Partners Long/Short Quant | Sold Out | -17.4K | -100.0% | $1.2M | 0.0% | 51 |
Most significant buyers
By move score, not size.
- Atreides Management
- Point72 Asset Management, L.P.
- Bridgewater Associates
- MILLENNIUM MANAGEMENT LLC
- TWO SIGMA INVESTMENTS, LP
Most significant sellers
By move score, not size.
- Voloridge Investment Management
- CenterBook Partners
- Man Group
- Boothbay Fund Management
- Squarepoint Ops LLC
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| Atreides Management | 1 | 658.5K | 0 | +658.5K | — | 0.4% | New | 67 |
| Point72 Asset Management, L.P. | 1 | 598.9K | 0 | +598.9K | — | 0.1% | New | 64 |
| Bridgewater Associates | 1 | 4.8K | 0 | +4.8K | — | 0.0% | New | 61 |
| MILLENNIUM MANAGEMENT LLC | 2 | 45.9K | 0 | +45.9K | — | 0.0% | New | 59 |
| TWO SIGMA INVESTMENTS, LP | 2 | 5.6K | 0 | +5.6K | — | 0.0% | New | 57 |
| Weiss Asset Management | 2 | 16.1K | 0 | +16.1K | — | 0.0% | New | 56 |
| CITADEL ADVISORS LLC | 1 | 84.4K | 34.6K | +49.8K | +144.1% | 0.0% | Increased | 54 |
| Voloridge Investment Management | 2 | 0 | 11.6K | -11.6K | -100.0% | 0.0% | Sold Out | 53 |
| Jain Global | 3 | 9.2K | 0 | +9.2K | — | 0.0% | New | 52 |
| CenterBook Partners | 4 | 0 | 17.4K | -17.4K | -100.0% | 0.0% | Sold Out | 51 |
| Aquatic Capital Management | 4 | 5.3K | 0 | +5.3K | — | 0.0% | New | 48 |
| Quantbot Technologies | 4 | 461 | 0 | +461 | — | 0.0% | New | 45 |
| Man Group | 3 | 7.3K | 18.8K | -11.5K | -61.2% | 0.0% | Reduced | 36 |
| Boothbay Fund Management | 4 | 15.2K | 39.8K | -24.6K | -61.8% | 0.0% | Reduced | 35 |
| Squarepoint Ops LLC | 2 | 95.3K | 130.9K | -35.6K | -27.2% | 0.0% | Reduced | 32 |
| Graham Capital Management | 3 | 7.1K | 9.6K | -2.6K | -26.5% | 0.0% | Reduced | 25 |
| Caxton Associates | 3 | 9.5K | 10.2K | -768 | -7.5% | 0.0% | Reduced | 24 |
| AQR Capital Management | 3 | 45.6K | 48.6K | -3.0K | -6.2% | 0.0% | Reduced | 21 |
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.