GRFS Grifols, S.A.
Grifols, S.A. (GRFS) 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 |
|---|---|---|---|---|---|---|
| Farallon Capital Management Event Value | Sold Out | -28.0K | -100.0% | $198.2K | 0.0% | 60 |
| CITADEL ADVISORS LLC Quant | Increased | +92.7K | +437.0% | $656.5K | 0.0% | 52 |
| Walleye Capital Long/Short Quant | New | +14 | — | $99 | 0.0% | 51 |
| Winton Group Quant Macro | Sold Out | -13.9K | -100.0% | $98.4K | 0.0% | 48 |
| Qube Research & Technologies Ltd Quant | Increased | +185.7K | +84.3% | $1.3M | 0.0% | 47 |
| Point72 Asset Management, L.P. | Reduced | -25.6K | -49.8% | $181.0K | 0.0% | 41 |
| Whitebox Advisors Event Value | Reduced | -464.3K | -22.5% | $3.3M | 0.6% | 38 |
| Hudson Bay Capital Management Event | Increased | +147.5K | +51.2% | $1.0M | 0.0% | 37 |
| MILLENNIUM MANAGEMENT LLC | Reduced | -635.6K | -12.7% | $4.5M | 0.0% | 32 |
| Verition Fund Management Event Long/Short | Reduced | -150.9K | -21.5% | $1.1M | 0.0% | 30 |
Most significant buyers
By move score, not size.
- CITADEL ADVISORS LLC
- Walleye Capital
- Qube Research & Technologies Ltd
- Hudson Bay Capital Management
- AQR Capital Management
Most significant sellers
By move score, not size.
- Farallon Capital Management
- Winton Group
- Point72 Asset Management, L.P.
- Whitebox Advisors
- MILLENNIUM MANAGEMENT LLC
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| Farallon Capital Management | 1 | 0 | 28.0K | -28.0K | -100.0% | 0.0% | Sold Out | 60 |
| CITADEL ADVISORS LLC | 1 | 113.9K | 21.2K | +92.7K | +437.0% | 0.0% | Increased | 52 |
| Walleye Capital | 3 | 14 | 0 | +14 | — | 0.0% | New | 51 |
| Winton Group | 4 | 0 | 13.9K | -13.9K | -100.0% | 0.0% | Sold Out | 48 |
| Qube Research & Technologies Ltd | 2 | 406.1K | 220.4K | +185.7K | +84.3% | 0.0% | Increased | 47 |
| Point72 Asset Management, L.P. | 1 | 25.8K | 51.4K | -25.6K | -49.8% | 0.0% | Reduced | 41 |
| Whitebox Advisors | 2 | 1.6M | 2.1M | -464.3K | -22.5% | 0.6% | Reduced | 38 |
| Hudson Bay Capital Management | 3 | 435.4K | 287.9K | +147.5K | +51.2% | 0.0% | Increased | 37 |
| MILLENNIUM MANAGEMENT LLC | 2 | 4.4M | 5.0M | -635.6K | -12.7% | 0.0% | Reduced | 32 |
| Verition Fund Management | 2 | 550.7K | 701.6K | -150.9K | -21.5% | 0.0% | Reduced | 30 |
| AQR Capital Management | 3 | 38.9K | 30.6K | +8.2K | +26.9% | 0.0% | Increased | 26 |
| Armistice Capital | 3 | 2.9M | 3.0M | -52.0K | -1.7% | 0.6% | Reduced | 26 |
| Engineers Gate | 4 | 48.7K | 66.7K | -18.0K | -27.0% | 0.0% | Reduced | 24 |
| Wolverine Asset Management | 2 | 164.7K | 164.7K | 0 | +0.0% | 0.1% | Unchanged | 18 |
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.