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647 hedge funds and large institutions have $18.9B invested in Flex in 2025 Q2 according to their latest regulatory filings, with 126 funds opening new positions, 206 increasing their positions, 220 reducing their positions, and 54 closing their positions.

New
Increased
Maintained
Reduced
Closed

133% more first-time investments, than exits

New positions opened: 126 | Existing positions closed: 54

125% more funds holding in top 10

Funds holding in top 10: 818 (+10)

83% more call options, than puts

Call options by funds: $81.5M | Put options by funds: $44.6M

52% more capital invested

Capital invested by funds: $12.4B → $18.9B (+$6.43B)

11% more funds holding

Funds holding: 582647 (+65)

3.03% more ownership

Funds ownership: 98.04%101.08% (+3%)

6% less repeat investments, than reductions

Existing positions increased: 206 | Existing positions reduced: 220

Holders
647
Holders Change
+65
Holders Change %
+11.17%
% of All Funds
8.52%
Holding in Top 10
18
Holding in Top 10 Change
+10
Holding in Top 10 Change %
+125%
% of All Funds
0.24%
New
126
Increased
206
Reduced
220
Closed
54
Calls
$81.5M
Puts
$44.6M
Net Calls
+$36.9M
Net Calls Change
+$19.9M
Name Holding Trade Value Shares
Change
Change in
Stake
ACM
651
Aquatic Capital Management
Illinois
-$9.97M -301,254 Closed
PI
652
PGGM Investments
Netherlands
-$7.96M -240,597 Closed
MIP
653
Marietta Investment Partners
Wisconsin
-$7.16M -216,362 Closed
EGM
654
Engineers Gate Manager
New York
-$6.05M -182,899 Closed
QCM
655
Qsemble Capital Management
New York
-$3.82M -115,430 Closed
SAM
656
Soviero Asset Management
New York
-$3.9M -100,000 Closed
JF
657
Jump Financial
Illinois
-$2.88M -87,130 Closed
CWP
658
Cyndeo Wealth Partners
Florida
-$2.82M -85,259 Closed
XT
659
XTX Topco
Cayman Islands
-$2.67M -80,863 Closed
MIC
660
Maxi Investments CY
Cyprus
-$2.17M -65,493 Closed
DFCM
661
Dark Forest Capital Management
Puerto Rico
-$1.99M -60,244 Closed
OQS
662
Occudo Quantitative Strategies
Florida
-$1.51M -45,654 Closed
YIH
663
Y-Intercept (HK)
Hong Kong
-$1.25M -37,681 Closed
OTPPB
664
Ontario Teachers' Pension Plan Board
Ontario, Canada
-$1.2M -36,414 Closed
CCIA
665
Campbell & Co Investment Adviser
Maryland
-$1.18M -35,653 Closed
Mackenzie Financial
666
Mackenzie Financial
Ontario, Canada
-$1.13M -34,120 Closed
LA
667
LM Advisors
California
-$1.01M -30,430 Closed
WLG
668
Williamson Legacy Group
Indiana
-$1M -30,296 Closed
BCM
669
Bayesian Capital Management
New York
-$963K -29,098 Closed
HIS
670
Harvest Investment Services
Illinois
-$917K -27,709 Closed
MFS
671
Mirabella Financial Services
United Kingdom
-$911K -27,314 Closed
Two Sigma Advisers
672
Two Sigma Advisers
New York
-$887K -26,800 Closed
PEAK6
673
PEAK6
Illinois
-$1.04M -26,772 Closed
USAA
674
United Services Automobile Association
Texas
-$849K -25,573 Closed
ACM
675
Aster Capital Management
United Arab Emirates
-$960K -25,332 Closed

FLEX Hedge Fund Activity: Q2 2025 in Review

647 of the 7,595 institutional investors tracked by Wall St. Rank reported a position in Flex (FLEX) for Q2 2025, worth a combined $18.9B — up 52% from $12.4B a quarter earlier.

Buyers outnumbered sellers: 126 funds opened new FLEX positions and 54 closed out — a net gain of 72 holders — while 206 added to existing stakes and 220 trimmed.

The largest buyer was BlackRock, adding an estimated $416M. The largest seller was Capital World Investors, cutting an estimated $150M.

  • 647 institutional investors held Flex (FLEX) as of Q2 2025, up from 582 in Q1 2025.
  • Funds reported $18.9B of Flex stock for Q2 2025, up 52% quarter-over-quarter.
  • 126 funds opened new Flex positions in Q2 2025 and 54 closed out, a net change of +72 holders.
  • The largest Flex buyer in Q2 2025 was BlackRock, an estimated $416M added.
  • The largest Flex seller in Q2 2025 was Capital World Investors, an estimated $150M sold.

Based on aggregated 13F filings for Q2 2025.