CTOS Custom Truck One Source, Inc.
Custom Truck One Source, Inc. (CTOS) 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 |
|---|---|---|---|---|---|---|
| MILLENNIUM MANAGEMENT LLC | Sold Out | -257.8K | -100.0% | $3.0M | 0.0% | 59 |
| RENAISSANCE TECHNOLOGIES LLC Quant | Sold Out | -31.7K | -100.0% | $373.9K | 0.0% | 58 |
| D. E. Shaw & Co., Inc. Quant | Increased | +440.9K | +241.2% | $5.2M | 0.0% | 54 |
| Aristeia Capital Event Long/Short | Sold Out | -83.6K | -100.0% | $987.7K | 0.0% | 54 |
| Walleye Capital Long/Short Quant | New | +463.5K | — | $5.5M | 0.0% | 53 |
| Trexquant Investment Quant | Sold Out | -179.4K | -100.0% | $2.1M | 0.0% | 53 |
| Quadrature Capital Quant | New | +17.5K | — | $206.7K | 0.0% | 52 |
| CITADEL ADVISORS LLC Quant | Reduced | -257.1K | -91.7% | $3.0M | 0.0% | 52 |
| Schonfeld Strategic Advisors Long/Short Quant | New | +45.4K | — | $535.7K | 0.0% | 51 |
| Aquatic Capital Management Quant | New | +10.5K | — | $124.3K | 0.0% | 48 |
Most significant buyers
By move score, not size.
- D. E. Shaw & Co., Inc.
- Walleye Capital
- Quadrature Capital
- Schonfeld Strategic Advisors
- Aquatic Capital Management
Most significant sellers
By move score, not size.
- MILLENNIUM MANAGEMENT LLC
- RENAISSANCE TECHNOLOGIES LLC
- Aristeia Capital
- Trexquant Investment
- CITADEL ADVISORS LLC
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| MILLENNIUM MANAGEMENT LLC | 2 | 0 | 257.8K | -257.8K | -100.0% | 0.0% | Sold Out | 59 |
| RENAISSANCE TECHNOLOGIES LLC | 1 | 0 | 31.7K | -31.7K | -100.0% | 0.0% | Sold Out | 58 |
| D. E. Shaw & Co., Inc. | 1 | 623.6K | 182.8K | +440.9K | +241.2% | 0.0% | Increased | 54 |
| Aristeia Capital | 2 | 0 | 83.6K | -83.6K | -100.0% | 0.0% | Sold Out | 54 |
| Walleye Capital | 3 | 463.5K | 0 | +463.5K | — | 0.0% | New | 53 |
| Trexquant Investment | 3 | 0 | 179.4K | -179.4K | -100.0% | 0.0% | Sold Out | 53 |
| Quadrature Capital | 3 | 17.5K | 0 | +17.5K | — | 0.0% | New | 52 |
| CITADEL ADVISORS LLC | 1 | 23.3K | 280.4K | -257.1K | -91.7% | 0.0% | Reduced | 52 |
| Schonfeld Strategic Advisors | 3 | 45.4K | 0 | +45.4K | — | 0.0% | New | 51 |
| Aquatic Capital Management | 4 | 10.5K | 0 | +10.5K | — | 0.0% | New | 48 |
| Tudor Investment Corporation | 2 | 28.7K | 228.5K | -199.8K | -87.4% | 0.0% | Reduced | 46 |
| Quantbot Technologies | 4 | 19.9K | 0 | +19.9K | — | 0.0% | New | 45 |
| Squarepoint Ops LLC | 2 | 11.3K | 46.4K | -35.1K | -75.6% | 0.0% | Reduced | 42 |
| Alyeska Investment Group, L.P. | 2 | 1.6M | 2.8M | -1.18M | -41.9% | 0.1% | Reduced | 40 |
| Graham Capital Management | 3 | 15.4K | 59.9K | -44.5K | -74.3% | 0.0% | Reduced | 37 |
| Voleon Capital Management | 3 | 342.1K | 220.2K | +121.9K | +55.4% | 0.1% | Increased | 36 |
| Point72 Asset Management, L.P. | 1 | 179.1K | 242.2K | -63.1K | -26.0% | 0.0% | Reduced | 35 |
| TWO SIGMA INVESTMENTS, LP | 2 | 19.2K | 30.2K | -11.0K | -36.5% | 0.0% | Reduced | 35 |
| Balyasny Asset Management L.P. | 2 | 53.0K | 64.0K | -11.0K | -17.3% | 0.0% | Reduced | 31 |
| Brevan Howard Capital Management | 3 | 49.0K | 87.0K | -38.0K | -43.7% | 0.0% | Reduced | 29 |
| AQR Capital Management | 3 | 754.0K | 650.7K | +103.3K | +15.9% | 0.0% | Increased | 26 |
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.