Citadel Advisors
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Citadel Advisors’s Custom Truck One Source CTOS Stock Holding History

Citadel Advisors’s Portfolio CTOS Stock Details CTOS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$1.84M Buy
280,361
+216,554
+339% +$1.42M ﹤0.01% 6248
2025
Q4 		$368K Sell
63,807
-363,195
-85% -$2.22M ﹤0.01% 9717
2025
Q3 		$2.74M Buy
427,002
+406,641
+1,997% +$2.36M ﹤0.01% 5466
2025
Q2 		$101K Sell
20,361
-216,018
-91% -$931K ﹤0.01% 11341
2025
Q1 		$998K Sell
236,379
-780,822
-77% -$3.77M ﹤0.01% 6966
2024
Q4 		$4.89M Buy
1,017,201
+642,835
+172% +$2.91M ﹤0.01% 4004
2024
Q3 		$1.29M Buy
+374,366
New +$1.57M ﹤0.01% 6343
2024
Q2 		– Sell
-15,958
Closed -$92.9K – 14403
2024
Q1 		$92.9K Sell
15,958
-115,345
-88% -$716K ﹤0.01% 11459
2023
Q4 		$811K Buy
+131,303
New +$774K ﹤0.01% 7106
2023
Q3 		– Sell
-164,798
Closed -$1.09M – 14397
2023
Q2 		$1.11M Sell
164,798
-363,919
-69% -$2.4M ﹤0.01% 6244
2023
Q1 		$3.59M Sell
528,717
-673,600
-56% -$4.68M ﹤0.01% 4354
2022
Q4 		$7.6M Buy
1,202,317
+174,913
+17% +$1.13M ﹤0.01% 3200
2022
Q3 		$5.99M Buy
1,027,404
+189,316
+23% +$1.18M ﹤0.01% 3568
2022
Q2 		$4.69M Buy
838,088
+26,144
+3% +$167K ﹤0.01% 3913
2022
Q1 		$6.81M Sell
811,944
-117,954
-13% -$953K ﹤0.01% 3593
2021
Q4 		$7.44M Buy
929,898
+799,210
+612% +$6.89M ﹤0.01% 3603
2021
Q3 		$1.22M Sell
130,688
-587,579
-82% -$4.94M ﹤0.01% 7631
2021
Q2 		$6.84M Sell
718,267
-288,269
-29% -$2.83M ﹤0.01% 3785
2021
Q1 		$9.41M Buy
1,006,536
+3,556
+0.4% +$29K ﹤0.01% 3056
2020
Q4 		$7.39M Buy
+1,002,980
New +$5.08M ﹤0.01% 3056

Other funds holding CTOS

PEA
Platinum Equity Advisors Beverly Hills, California $8.88B AUM 27.09% 1-Year Est. Return
CWA
Canvas Wealth Advisors Shawnee, Kansas $717M AUM 41.56% 1-Year Est. Return
Mirae Asset Global ETFs Holdings
Mirae Asset Global ETFs Holdings Causeway Bay, Hong Kong $73.7B AUM 53.56% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Allspring Global Investments
Allspring Global Investments Charlotte, North Carolina $59.7B AUM 29.08% 1-Year Est. Return
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $35.4B AUM 33.54% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Boston Partners
Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Citadel Advisors's CTOS Position: Q1 2026 in Review

Citadel Advisors increased its Custom Truck One Source (CTOS) stake by 339% in Q1 2026, buying an estimated $1.42M and bringing the position to 280,361 shares worth $1.84M. The position accounts for ﹤0.01% of the portfolio, ranked #6248.

Citadel Advisors first reported a position in CTOS in Q4 2020 and has held it in 20 quarters since. The position peaked at $9.41M in Q1 2021. 173 funds tracked by Wall St. Rank hold CTOS as of Q1 2026.

  • Citadel Advisors held 280,361 shares of Custom Truck One Source worth $1.84M as of Q1 2026.
  • Citadel Advisors bought 216,554 Custom Truck One Source shares in Q1 2026, an estimated $1.42M.
  • Custom Truck One Source made up ﹤0.01% of Citadel Advisors's portfolio in Q1 2026, its #6248 holding.
  • Citadel Advisors first reported a position in Custom Truck One Source in Q4 2020 and has held it in 20 quarters since.
  • Citadel Advisors's Custom Truck One Source position peaked at $9.41M in Q1 2021.
  • 173 funds tracked by Wall St. Rank held Custom Truck One Source as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.