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668 hedge funds and large institutions have $13.1B invested in Arm in 2025 Q2 according to their latest regulatory filings, with 132 funds opening new positions, 216 increasing their positions, 211 reducing their positions, and 90 closing their positions.

New
Increased
Maintained
Reduced
Closed

62% more capital invested

Capital invested by funds: $8.1B → $13.1B (+$5.03B)

47% more first-time investments, than exits

New positions opened: 132 | Existing positions closed: 90

33% more funds holding in top 10

Funds holding in top 10: 1216 (+4)

33% more call options, than puts

Call options by funds: $6.99B | Put options by funds: $5.25B

6% more funds holding

Funds holding: 633668 (+35)

2% more repeat investments, than reductions

Existing positions increased: 216 | Existing positions reduced: 211

0.45% more ownership

Funds ownership: 7.22%7.67% (+0.45%)

Holders
668
Holders Change
+35
Holders Change %
+5.53%
% of All Funds
8.8%
Holding in Top 10
16
Holding in Top 10 Change
+4
Holding in Top 10 Change %
+33.33%
% of All Funds
0.21%
New
132
Increased
216
Reduced
211
Closed
90
Calls
$6.99B
Puts
$5.25B
Net Calls
+$1.74B
Net Calls Change
+$1.53B
Name Holding Trade Value Shares
Change
Change in
Stake
RS
26
Robeco Schweiz
Switzerland
$118M -$5.81M -46,795 -6%
Axa
27
Axa
France
$102M +$25.8M +207,894 +49%
First Trust Advisors
28
First Trust Advisors
Illinois
$97.7M -$37.6M -302,553 -33%
Hudson Bay Capital Management
29
Hudson Bay Capital Management
Connecticut
$97M +$74.5M +600,000 New
American Century Companies
30
American Century Companies
Missouri
$96.5M -$13.3M -106,785 -15%
Citigroup
31
Citigroup
New York
$96.4M -$10.8M -87,213 -13%
Parallax Volatility Advisers
32
Parallax Volatility Advisers
California
$96M +$43.8M +353,055 +147%
Citadel Advisors
33
Citadel Advisors
Florida
$85.3M +$37M +298,361 +130%
Barclays
34
Barclays
United Kingdom
$85.3M -$30.1M -242,757 -32%
CHP
35
Castle Hook Partners
New York
$85M +$65.3M +525,825 New
SEI Investments
36
SEI Investments
Pennsylvania
$84.5M -$13.5M -108,454 -17%
Robeco Institutional Asset Management
37
Robeco Institutional Asset Management
Netherlands
$84.2M +$63M +507,300 +3,853%
Rafferty Asset Management
38
Rafferty Asset Management
New York
$82M +$14.9M +119,863 +31%
Marshall Wace
39
Marshall Wace
United Kingdom
$78.1M +$25.7M +207,209 +75%
ZCI
40
Zevenbergen Capital Investments
Washington
$77.2M +$715K +5,762 +1%
BA
41
Bridgewater Associates
Connecticut
$76.6M +$58.8M +473,725 New
Wells Fargo
42
Wells Fargo
California
$76.2M +$12.2M +97,962 +26%
State Street
43
State Street
Massachusetts
$71.4M +$7.03M +56,656 +15%
DCM
44
Driehaus Capital Management
Illinois
$70.8M +$51.9M +418,452 +2,166%
Mirae Asset Global Investments
45
Mirae Asset Global Investments
South Korea
$70.5M -$375K -3,024 -0.7%
1832 Asset Management
46
1832 Asset Management
Ontario, Canada
$65.3M +$50.1M +403,700 New
Susquehanna International Group
47
Susquehanna International Group
Pennsylvania
$62.3M -$75.3M -606,950 -61%
GGHC
48
Gilder Gagnon Howe & Co
New York
$56.1M +$82.3K +663 +0.2%
NC
49
NZS Capital
Colorado
$54.5M +$18.1M +145,859 +76%
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
50
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
$51.9M -$1.22M -9,805 -3%

ARM Hedge Fund Activity: Q2 2025 in Review

668 of the 7,595 institutional investors tracked by Wall St. Rank reported a position in Arm (ARM) for Q2 2025, worth a combined $13.1B — up 62% from $8.1B a quarter earlier.

Buyers outnumbered sellers: 132 funds opened new ARM positions and 90 closed out — a net gain of 42 holders — while 216 added to existing stakes and 211 trimmed.

The largest buyer was Coatue Management, opening a new position worth an estimated $575M. The largest seller was BlackRock, cutting an estimated $289M.

  • 668 institutional investors held Arm (ARM) as of Q2 2025, up from 633 in Q1 2025.
  • Funds reported $13.1B of Arm stock for Q2 2025, up 62% quarter-over-quarter.
  • 132 funds opened new Arm positions in Q2 2025 and 90 closed out, a net change of +42 holders.
  • The largest Arm buyer in Q2 2025 was Coatue Management, an estimated $575M added.
  • The largest Arm seller in Q2 2025 was BlackRock, an estimated $289M sold.

Based on aggregated 13F filings for Q2 2025.