755 hedge funds and large institutions have $22B invested in Flex in 2025 Q4 according to their latest regulatory filings, with 140 funds opening new positions, 204 increasing their positions, 306 reducing their positions, and 63 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more call options, than puts

Call options by funds: $ | Put options by funds: $

more funds holding

Funds holding:

more capital invested

Capital invested by funds: $ → $

3.94% more ownership

Funds ownership: 94.68%98.62% (+3.9%)

33% less repeat investments, than reductions

Existing positions increased: 204 | Existing positions reduced: 306

42% less funds holding in top 10

Funds holding in top 10: 1911 (-8)

Holders
755
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
11
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$111M
Puts
$90M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
AAM
301
Advisors Asset Management
Colorado
$1.67M
PTC
302
Private Trust Company
Ohio
$1.67M
UOTTAIMCU
303
University of Texas/Texas AM Investment Management Co (UTIMCO)
Texas
$1.66M
TG
304
TCW Group
California
$1.64M
SAM
305
Securian Asset Management
Minnesota
$1.63M
BOTPPF
306
Board of the Pension Protection Fund
United Kingdom
$1.63M
TAF
307
Tredje AP-fonden
Sweden
$1.6M
BFO
308
Boston Family Office
Massachusetts
$1.59M
ECM
309
Evergreen Capital Management
Washington
$1.53M
IMCOOI
310
Investment Management Corp of Ontario (IMCO)
Canada
$1.53M
QCG
311
Quadrant Capital Group
Ohio
$1.52M
MF
312
Magnetar Financial
Illinois
$1.52M
UCFA
313
United Capital Financial Advisors
Texas
$1.51M
DFCM
314
Dark Forest Capital Management
Puerto Rico
$1.51M
Walleye Trading
315
Walleye Trading
New York
$1.49M
Cerity Partners
316
Cerity Partners
New York
$1.48M
DM
317
Delphi Management
Massachusetts
$1.48M
AO
318
Advisor OS
Illinois
$1.48M
PP
319
Prudential plc
United Kingdom
$1.45M
RWM
320
Ritholtz Wealth Management
New York
$1.43M
Jane Street
321
Jane Street
New York
$1.41M
TAM
322
Todd Asset Management
Kentucky
$1.41M
Aviva
323
Aviva
United Kingdom
$1.39M
William Blair & Company
324
William Blair & Company
Illinois
$1.39M
HWAM
325
Hennion & Walsh Asset Management
New Jersey
$1.39M