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Custom Truck One Source CTOS

US equityMarket cap rank #2696
$9.88 +$0.10 (+1.02%)
Market closed · Oct 5, 10:20 pm ET · Last extended-hours $9.88 0.00%
Open$9.77
Prev close$9.78
Day range$9.56 – $9.96
Volume783.0K
Market cap$2.25B
P/E (TTM)109.8
Dividend yield–

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Institutional ownership98.0%+0.00 pts vs. prior quarter
Institutions holding225+0 vs. prior quarter
Insider trades (recent)40 buys / 10 sellsNet buying
Short interest2.05% of floatDays to cover 4.2 · as of 15 Sep 2026
Short-sale volume share26.9%5-day average of daily volume

Short-sale volume as % of daily volume

15%22%29%36%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: +$402.7K (11 inflow days, 9 outflow days).

The five largest holders on file together own 79.2% of shares outstanding.

Largest holders

  • Platinum Equity, LLC68.90%
  • Dimensional Fund Advisors2.71%
  • Mirae Asset Global Investments Co., Ltd2.71%
  • Canvas Wealth Advisors, LLC2.63%
  • Mark Ein2.27%
  • BlackRock2.01%
  • Vanguard Capital Management, LLC1.32%
  • Allspring Global Investments, LLC1.18%

By investor type

  • VC/PE Fund68.90%
  • Mutual Fund23.82%
  • Individual/Insider4.70%
  • Hedge Fund2.79%
  • Public Company1.77%
  • Private Company0.31%
  • Family Office/Trust0.21%
  • Government Pension Fund0.15%

Reported short interest has risen from 1.33% to 2.05% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).

Short interest, by report

Report dateShares short% of floatDays to cover
15 Sep 2026 4,670,693 2.1% 4.2
31 Aug 2026 4,432,413 1.9% 5.9
14 Aug 2026 3,576,464 1.6% 3.1
31 Jul 2026 3,509,945 1.5% 3.0
15 Jul 2026 3,260,019 1.4% 3.2
30 Jun 2026 3,018,553 1.3% 2.4

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