GRDN Guardian Pharmacy Services, Inc.
Guardian Pharmacy Services, Inc. (GRDN) 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 |
|---|---|---|---|---|---|---|
| Hudson Bay Capital Management Event | Sold Out | -141.8K | -100.0% | $5.9M | 0.0% | 55 |
| MILLENNIUM MANAGEMENT LLC | Increased | +93.4K | +343.5% | $3.9M | 0.0% | 53 |
| Capstone Investment Advisors Quant Macro | New | +14.5K | — | $607.3K | 0.0% | 53 |
| Quadrature Capital Quant | Sold Out | -23.5K | -100.0% | $984.9K | 0.0% | 53 |
| MARSHALL WACE, LLP Long/Short | Reduced | -381.7K | -91.4% | $16.0M | 0.0% | 52 |
| CITADEL ADVISORS LLC Quant | Reduced | -491.3K | -84.8% | $20.6M | 0.0% | 52 |
| Schonfeld Strategic Advisors Long/Short Quant | Sold Out | -9.4K | -100.0% | $393.0K | 0.0% | 51 |
| Lighthouse Investment Partners | New | +6.7K | — | $278.5K | 0.0% | 51 |
| Y-Intercept Quant | New | +85.0K | — | $3.6M | 0.1% | 51 |
| Quantbot Technologies Quant | Sold Out | -8.0K | -100.0% | $335.3K | 0.0% | 45 |
Most significant buyers
By move score, not size.
- MILLENNIUM MANAGEMENT LLC
- Capstone Investment Advisors
- Lighthouse Investment Partners
- Y-Intercept
- Qube Research & Technologies Ltd
Most significant sellers
By move score, not size.
- Hudson Bay Capital Management
- Quadrature Capital
- MARSHALL WACE, LLP
- CITADEL ADVISORS LLC
- Schonfeld Strategic Advisors
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| Hudson Bay Capital Management | 3 | 0 | 141.8K | -141.8K | -100.0% | 0.0% | Sold Out | 55 |
| MILLENNIUM MANAGEMENT LLC | 2 | 120.6K | 27.2K | +93.4K | +343.5% | 0.0% | Increased | 53 |
| Capstone Investment Advisors | 3 | 14.5K | 0 | +14.5K | — | 0.0% | New | 53 |
| Quadrature Capital | 3 | 0 | 23.5K | -23.5K | -100.0% | 0.0% | Sold Out | 53 |
| MARSHALL WACE, LLP | 2 | 36.0K | 417.7K | -381.7K | -91.4% | 0.0% | Reduced | 52 |
| CITADEL ADVISORS LLC | 1 | 87.8K | 579.1K | -491.3K | -84.8% | 0.0% | Reduced | 52 |
| Schonfeld Strategic Advisors | 3 | 0 | 9.4K | -9.4K | -100.0% | 0.0% | Sold Out | 51 |
| Lighthouse Investment Partners | 3 | 6.7K | 0 | +6.7K | — | 0.0% | New | 51 |
| Y-Intercept | 4 | 85.0K | 0 | +85.0K | — | 0.1% | New | 51 |
| Quantbot Technologies | 4 | 0 | 8.0K | -8.0K | -100.0% | 0.0% | Sold Out | 45 |
| TWO SIGMA INVESTMENTS, LP | 2 | 98.2K | 312.7K | -214.5K | -68.6% | 0.0% | Reduced | 45 |
| RENAISSANCE TECHNOLOGIES LLC | 1 | 44.8K | 100.0K | -55.2K | -55.2% | 0.0% | Reduced | 43 |
| Ghisallo Capital Management | 2 | 50.0K | 125.0K | -75.0K | -60.0% | 0.1% | Reduced | 42 |
| Gotham Asset Management, LLC | 2 | 6.3K | 16.0K | -9.7K | -60.9% | 0.0% | Reduced | 39 |
| J. Goldman & Co. | 3 | 79.2K | 159.6K | -80.4K | -50.4% | 0.1% | Reduced | 35 |
| Squarepoint Ops LLC | 2 | 21.9K | 36.4K | -14.5K | -39.8% | 0.0% | Reduced | 33 |
| AQR Capital Management | 3 | 6.2K | 13.0K | -6.8K | -52.5% | 0.0% | Reduced | 33 |
| Qube Research & Technologies Ltd | 2 | 97.5K | 79.3K | +18.2K | +22.9% | 0.0% | Increased | 30 |
| Trexquant Investment | 3 | 112.2K | 163.0K | -50.9K | -31.2% | 0.0% | Reduced | 30 |
| Engineers Gate | 4 | 13.0K | 26.6K | -13.6K | -51.2% | 0.0% | Reduced | 30 |
| D. E. Shaw & Co., Inc. | 1 | 73.8K | 75.7K | -1.8K | -2.4% | 0.0% | Reduced | 27 |
| Woodline Partners LP | 2 | 1.3M | 1.3M | +22 | +0.0% | 0.2% | Increased | 24 |
| Jain Global | 3 | 52.4K | 47.1K | +5.3K | +11.2% | 0.0% | Increased | 24 |
| Centiva Capital | 4 | 6.9K | 9.3K | -2.4K | -25.6% | 0.0% | Reduced | 24 |
| Alyeska Investment Group, L.P. | 2 | 275.0K | 275.0K | 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.