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ACK Asset Management’s Custom Truck One Source CTOS Stock Holding History

ACK Asset Management’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 		– Sell
-800,136
Closed -$4.61M – 24
2025
Q4 		$4.61M Sell
800,136
-1,124,864
-58% -$6.87M 0.58% 23
2025
Q3 		$12.4M Buy
1,925,000
+50,000
+3% +$290K 1.55% 20
2025
Q2 		$9.26M Buy
+1,875,000
New +$8.08M 1.22% 20

Other funds holding CTOS

Platinum Equity Advisors
Platinum Equity Advisors Beverly Hills, California $8.96B AUM 34.3% 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 $83.9B AUM 60.43% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Allspring Global Investments
Allspring Global Investments Charlotte, North Carolina $65.2B AUM 39.42% 1-Year Est. Return
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $38.9B AUM 28.51% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return

ACK Asset Management's CTOS Position: Q1 2026 in Review

ACK Asset Management sold out of Custom Truck One Source (CTOS) in Q1 2026, closing a stake of 800,136 shares — an estimated $4.61M sold.

ACK Asset Management first reported a position in CTOS in Q2 2025 and held it in 3 quarters. The position peaked at $12.4M in Q3 2025. 175 funds tracked by Wall St. Rank hold CTOS as of Q1 2026.

  • ACK Asset Management reported no remaining Custom Truck One Source position as of Q1 2026 after selling out during the quarter.
  • ACK Asset Management sold 800,136 Custom Truck One Source shares in Q1 2026, an estimated $4.61M.
  • ACK Asset Management first reported a position in Custom Truck One Source in Q2 2025 and held it in 3 quarters.
  • ACK Asset Management's Custom Truck One Source position peaked at $12.4M in Q3 2025.
  • 175 funds tracked by Wall St. Rank held Custom Truck One Source as of Q1 2026.

Based on ACK Asset Management's 13F filing for Q1 2026, filed 15 May 2026.