FAST Fastenal Co.
Fastenal Co. (FAST) 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 | -1.34M | -100.0% | $64.3M | 0.0% | 64 |
| RENAISSANCE TECHNOLOGIES LLC Quant | New | +59.2K | — | $2.8M | 0.0% | 60 |
| Qube Research & Technologies Ltd Quant | New | +253.8K | — | $12.2M | 0.0% | 59 |
| Holocene Advisors, LP | Reduced | -2.58M | -98.1% | $123.7M | 0.0% | 59 |
| Tudor Investment Corporation Macro | New | +271.0K | — | $13.0M | 0.1% | 58 |
| MILLENNIUM MANAGEMENT LLC | Increased | +2.03M | +263.3% | $97.3M | 0.1% | 58 |
| Weiss Asset Management Event Quant | Sold Out | -173.7K | -100.0% | $8.3M | 0.0% | 57 |
| Lighthouse Investment Partners | Sold Out | -210.4K | -100.0% | $10.1M | 0.0% | 57 |
| D. E. Shaw & Co., Inc. Quant | Increased | +285.2K | +367.3% | $13.7M | 0.0% | 56 |
| Jain Global Long/Short Quant | Sold Out | -180.4K | -100.0% | $8.7M | 0.0% | 54 |
Most significant buyers
By move score, not size.
- RENAISSANCE TECHNOLOGIES LLC
- Qube Research & Technologies Ltd
- Tudor Investment Corporation
- MILLENNIUM MANAGEMENT LLC
- D. E. Shaw & Co., Inc.
Most significant sellers
By move score, not size.
- Balyasny Asset Management L.P.
- Holocene Advisors, LP
- Weiss Asset Management
- Lighthouse Investment Partners
- Jain Global
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| Balyasny Asset Management L.P. | 2 | 0 | 1.3M | -1.34M | -100.0% | 0.0% | Sold Out | 64 |
| RENAISSANCE TECHNOLOGIES LLC | 1 | 59.2K | 0 | +59.2K | — | 0.0% | New | 60 |
| Qube Research & Technologies Ltd | 2 | 253.8K | 0 | +253.8K | — | 0.0% | New | 59 |
| Holocene Advisors, LP | 2 | 49.4K | 2.6M | -2.58M | -98.1% | 0.0% | Reduced | 59 |
| Tudor Investment Corporation | 2 | 271.0K | 0 | +271.0K | — | 0.1% | New | 58 |
| MILLENNIUM MANAGEMENT LLC | 2 | 2.8M | 769.8K | +2.03M | +263.3% | 0.1% | Increased | 58 |
| Weiss Asset Management | 2 | 0 | 173.7K | -173.7K | -100.0% | 0.0% | Sold Out | 57 |
| Lighthouse Investment Partners | 3 | 0 | 210.4K | -210.4K | -100.0% | 0.0% | Sold Out | 57 |
| D. E. Shaw & Co., Inc. | 1 | 362.8K | 77.6K | +285.2K | +367.3% | 0.0% | Increased | 56 |
| Jain Global | 3 | 0 | 180.4K | -180.4K | -100.0% | 0.0% | Sold Out | 54 |
| MARSHALL WACE, LLP | 2 | 628.1K | 131.9K | +496.2K | +376.0% | 0.0% | Increased | 54 |
| Wolverine Asset Management | 2 | 0 | 7.5K | -7.5K | -100.0% | 0.0% | Sold Out | 54 |
| LMR Partners | 3 | 5.8K | 0 | +5.8K | — | 0.0% | New | 53 |
| CITADEL ADVISORS LLC | 1 | 2.0M | 1.1M | +912.7K | +86.1% | 0.1% | Increased | 53 |
| Quadrature Capital | 3 | 17.1K | 0 | +17.1K | — | 0.0% | New | 53 |
| ExodusPoint Capital Management | 3 | 15.0K | 0 | +15.0K | — | 0.0% | New | 52 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 2 | 351.4K | 166.8K | +184.6K | +110.7% | 0.0% | Increased | 52 |
| Alphadyne Asset Management | 3 | 0 | 15.7K | -15.7K | -100.0% | 0.0% | Sold Out | 52 |
| Voleon Capital Management | 3 | 559.2K | 145.9K | +413.3K | +283.3% | 0.5% | Increased | 51 |
| Schonfeld Strategic Advisors | 3 | 0 | 4.4K | -4.4K | -100.0% | 0.0% | Sold Out | 51 |
| AQR Capital Management | 3 | 2.5M | 875.3K | +1.60M | +182.6% | 0.0% | Increased | 51 |
| Boothbay Fund Management | 4 | 7.0K | 0 | +7.0K | — | 0.0% | New | 49 |
| TWO SIGMA INVESTMENTS, LP | 2 | 105.3K | 57.5K | +47.8K | +83.1% | 0.0% | Increased | 48 |
| Winton Group | 4 | 9.6K | 0 | +9.6K | — | 0.0% | New | 48 |
| Man Group | 3 | 436.1K | 226.2K | +209.8K | +92.7% | 0.0% | Increased | 48 |
| WORLDQUANT MILLENNIUM ADVISORS LLC | 2 | 41.7K | 229.8K | -188.1K | -81.8% | 0.0% | Reduced | 47 |
| Walleye Capital | 3 | 669 | 21.0K | -20.3K | -96.8% | 0.0% | Reduced | 44 |
| Engineers Gate | 4 | 25.9K | 6.8K | +19.2K | +283.4% | 0.0% | Increased | 42 |
| Brevan Howard Capital Management | 3 | 19.0K | 49.1K | -30.0K | -61.2% | 0.0% | Reduced | 36 |
| Squarepoint Ops LLC | 2 | 2.3M | 2.7M | -332.5K | -12.5% | 0.3% | Reduced | 32 |
| Hudson Bay Capital Management | 3 | 159.4K | 187.1K | -27.7K | -14.8% | 0.0% | Reduced | 28 |
| Woodline Partners LP | 2 | 250.6K | 224.9K | +25.7K | +11.4% | 0.0% | Increased | 28 |
| Graham Capital Management | 3 | 175.8K | 141.8K | +34.0K | +24.0% | 0.3% | Increased | 28 |
| Gotham Asset Management, LLC | 2 | 567.5K | 598.9K | -31.4K | -5.2% | 0.1% | Reduced | 27 |
| Chilton Investment Company | 2 | 25.3K | 27.4K | -2.1K | -7.6% | 0.0% | Reduced | 25 |
| Y-Intercept | 4 | 79.1K | 100.2K | -21.1K | -21.1% | 0.1% | Reduced | 25 |
| Verition Fund Management | 2 | 88.0K | 85.9K | +2.2K | +2.5% | 0.0% | Increased | 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.