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Arm Holdings ARM

US equityMarket cap rank #41SemiconductorsArtificial IntelligenceAI PCStargate Concept Stocks
$311.39
−$21.17 (-6.37%)
Market open · Sep 24, 2:00 pm ET
After hours $331.84 -0.22%
Open$319.23
Prev close$332.56
Day range$304.16 – $326.00
Volume6.39M
Market cap$332.56B
P/E (TTM)317.7
Dividend yield–

Ownership & positioning

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

Institutional ownership95.9%-0.03 pts vs. prior quarter
Institutions holding1,130-3 vs. prior quarter
Insider trades (recent)11 buys / 9 sellsNet buying
Short interest1.57% of floatDays to cover 4.4 · as of 31 Aug 2026
Short-sale volume share16.1%5-day average of daily volume

Short-sale volume as % of daily volume

10%13%17%20%Aug '26Sep '26Sep '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$41.52M (11 inflow days, 9 outflow days).

Largest holders

  • SoftBank Group Corp.86.39%
  • Invesco Capital Management LLC1.06%
  • Capital Research0.84%
  • Union Asset Management Holding AG0.60%
  • Arrowstreet Capital, Limited Partnership0.38%

By investor type

  • Public Company87.47%
  • Mutual Fund7.26%
  • Hedge Fund0.45%
  • Private Company0.35%
  • Government Pension Fund0.13%
  • VC/PE Fund0.11%
  • Sovereign Wealth Fund0.09%
  • Family Office/Trust0.07%
Institutional holders1,130
Institutional ownership95.9%

Insider activity

Total transactions14
Bought11
Sold9

Short interest

Report dateShares short% of floatDays to cover
31 Aug 2026 16,740,615 1.6% 4.4
14 Aug 2026 18,264,105 1.7% 4.1
31 Jul 2026 16,867,253 1.6% 2.7
15 Jul 2026 17,460,573 1.6% 2.9
30 Jun 2026 17,227,301 1.6% 1.5
15 Jun 2026 16,369,236 1.5% 1.3
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