Custom Truck One Source, Inc.
US ˙ NYSE ˙ US23204X1037

SecurityCTOS / Custom Truck One Source, Inc.
InstitutionCitigroup Inc
Latest Disclosed Ownership384,712 shares
Latest Disclosed Value $ 2,527,558
Citigroup Inc reports 26.21% decrease in ownership of CTOS / Custom Truck One Source, Inc.

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 384,712 shares of Custom Truck One Source, Inc. (US:CTOS) valued at $2,527,558 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 521,357 shares of Custom Truck One Source, Inc.. This represents a change in shares of -26.21% during the quarter. The current value of the position is $3,847,120 USD.

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)
2026-05-11 2026-03-31 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 384,712 -136,645 -26.21 2,528 -15.85 0.0005
2026-02-13 2025-12-31 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 521,357 122,036 30.56 3,003 17.17 0.0013
2025-11-10 2025-09-30 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 399,321 304,427 320.81 2,564 447.65 0.0011
2025-08-11 2025-06-30 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 94,894 20,024 26.75 469 48.57 0.0002
2025-05-12 2025-03-31 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 74,870 27,823 59.14 316 39.38 0.0002
2025-02-12 2024-12-31 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 47,047 -9,088 -16.19 226 17.10 0.0001
2024-11-12 2024-09-30 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 56,135 42,877 323.40 194 238.60 0.0001
2024-08-12 2024-06-30 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 13,258 2,573 24.08 58 -8.06 0.0000
2024-05-10 2024-03-31 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 10,685 1,510 16.46 62 10.71 0.0000
2024-02-09 2023-12-31 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 9,175 8,573 1,424.09 57 1,766.67 0.0000
2023-12-06 2023-09-30 13F/A-1 CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 602 -23,428 -97.49 4 -98.14 0.0000
2023-11-09 2023-09-30 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 602 -23,428 4 0.0000
2023-08-10 2023-06-30 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 24,030 22,000 1,083.74 162 1,138.46 0.0001
2023-05-11 2023-03-31 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 2,030 -214,620 -99.06 14 -99.05 0.0000
2023-02-09 2022-12-31 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 216,650 -501 -0.23 1,369 8.14 0.0011
2022-11-10 2022-09-30 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 217,151 -1,443 -0.66 1,266 3.43 0.0009
2022-08-10 2022-06-30 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 218,594 215,406 6,756.78 1,224 4,433.33 0.0009
2022-05-12 2022-03-31 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 3,188 -11,283 -77.97 27 -76.72 0.0000
2022-02-10 2021-12-31 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 14,471 -47,643 -76.70 116 -80.00 0.0001
2021-11-10 2021-09-30 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 62,114 61,496 9,950.81 580 9,566.67 0.0003
2021-08-10 2021-06-30 13F CUSTOM TRUCK ONE SOURCE COM CL A 23204X103 618 -536 -46.45 6 -45.45 0.0000
2021-05-13 2021-03-31 13F NESCO HLDGS COM 64083J104 1,154 -1,550 -57.32 11 -45.00 0.0000
2021-02-11 2020-12-31 13F NESCO HLDGS COM 64083J104 2,704 1,792 196.49 20 400.00 0.0000
2020-11-12 2020-09-30 13F NESCO HLDGS COM 64083J104 912 -823 -47.44 4 -42.86 0.0000
2020-08-12 2020-06-30 13F NESCO HLDGS COM 64083J104 1,735 -3,373 -66.03 7 -58.82 0.0000
2020-05-12 2020-03-31 13F NESCO HLDGS COM 64083J104 5,108 4,086 399.80 17 325.00 0.0000
2020-02-12 2019-12-31 13F NESCO HLDGS COM 64083J104 1,022 -223,978 -99.55 4 -99.70 0.0000
2019-11-08 2019-09-30 13F NESCO HLDGS COM 64083J104 225,000 225,000 1,346 0.0011
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.