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Box Inc BOX

US equityMarket cap rank #2132
$35.34 +$0.85 (+2.46%)
Market closed · Oct 5, 10:20 pm ET · Last extended-hours $35.34 0.00%
Open$34.50
Prev close$34.49
Day range$34.50 – $35.58
Volume2.82M
Market cap$4.85B
P/E (TTM)52.0
Dividend yield–

Ownership & positioning

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

Institutional ownership103.7%+0.72 pts vs. prior quarter
Institutions holding473+1 vs. prior quarter
Insider trades (recent)14 buys / 36 sellsNet selling
Short interest12.20% of floatDays to cover 7.0 · as of 15 Sep 2026
Short-sale volume share19.6%5-day average of daily volume

Short-sale volume as % of daily volume

16%19%23%26%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$8.19M (9 inflow days, 11 outflow days).

The five largest holders on file together own 41.3% of shares outstanding.

Largest holders

  • BlackRock18.54%
  • Vanguard Portfolio Management, LLC8.12%
  • EARNEST Partners, LLC5.19%
  • Vanguard Capital Management, LLC5.10%
  • State Street Global Advisors4.32%
  • Acadian Asset Management LLC3.62%
  • Arrowstreet Capital, Limited Partnership3.14%
  • Citadel Advisors LLC2.71%

By investor type

  • Mutual Fund83.78%
  • Hedge Fund11.50%
  • Public Company4.46%
  • Individual/Insider3.47%
  • Insurance Company1.36%
  • Government Pension Fund1.21%
  • Private Company1.00%
  • Sovereign Wealth Fund0.16%

Reported short interest has risen from 9.82% to 12.20% 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 16,735,884 12.2% 7.0
31 Aug 2026 16,958,898 12.4% 4.8
14 Aug 2026 15,587,434 11.3% 5.2
31 Jul 2026 15,340,703 11.1% 5.3
15 Jul 2026 14,584,383 10.5% 5.8
30 Jun 2026 13,602,493 9.8% 5.6

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