Custom Truck One Source, Inc.
DE ˙ DB ˙ US23204X1037
SecurityDE:65W0 / Custom Truck One Source, Inc.
InstitutionRenaissance Technologies Llc
ManagerJames Simons
Latest Disclosed Ownership31,656 shares
Latest Disclosed Value $ 207,980
Renaissance Technologies Llc ownership in 65W0 / Custom Truck One Source, Inc.

On May 14, 2026 - Renaissance Technologies Llc filed a 13F-HR form disclosing ownership of 31,656 shares of Custom Truck One Source, Inc. (DE:65W0) valued at $207,980 USD as of March 31, 2026. The entity filed a previous 13F-HR on August 13, 2025 disclosing 0 shares of Custom Truck One Source, Inc..

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 31,656 31,656 208 0.0003
2025-08-13 2025-06-30 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 0 -53,200 -100.00 0 -100.00
2025-05-14 2025-03-31 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 53,200 53,200 225 0.0003
2025-02-13 2024-12-31 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 0 -63,000 -100.00 0 -100.00
2024-11-13 2024-09-30 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 63,000 63,000 217 0.0003
2024-08-09 2024-06-30 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 0 -44,000 -100.00 0 0.0000
2024-05-13 2024-03-31 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 44,000 -193,300 -81.46 0 -100.00 0.0004
2024-02-13 2023-12-31 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 237,300 18,900 8.65 1 0.00 0.0023
2023-11-14 2023-09-30 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 218,400 135,900 164.73 1 0.0023
2023-08-11 2023-06-30 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 82,500 43,229 110.08 1 0.0008
2023-05-12 2023-03-31 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 39,271 39,271 0 0.0004
2021-11-12 2021-09-30 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 0 -60,200 -100.00 0 -100.00
2021-08-13 2021-06-30 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 60,200 -29,400 -32.81 573 -31.62 0.0007
2021-05-13 2021-03-31 13F NESCO HLDGS COM 64083J104 89,600 38,000 73.64 838 120.53 0.0010
2021-02-10 2020-12-31 13F NESCO HLDGS COM 64083J104 51,600 32,745 173.67 380 387.18 0.0004
2020-11-13 2020-09-30 13F NESCO HLDGS COM 64083J104 18,855 18,855 78 0.0001
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.