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Olin
OLN

370 hedge funds and large institutions have $2.58B invested in Olin in 2025 Q3 according to their latest regulatory filings, with 77 funds opening new positions, 104 increasing their positions, 129 reducing their positions, and 57 closing their positions.

New
Increased
Maintained
Reduced
Closed

183% more call options, than puts

Call options by funds: $39.7M | Put options by funds: $14M

35% more first-time investments, than exits

New positions opened: 77 | Existing positions closed: 57

23% more capital invested

Capital invested by funds: $2.1B → $2.58B (+$478M)

5% more funds holding

Funds holding: 352 → 370 (+18)

0.51% less ownership

Funds ownership: 90.44% → 89.94% (-0.51%)

19% less repeat investments, than reductions

Existing positions increased: 104 | Existing positions reduced: 129

Holders
370
Holders Change
+18
Holders Change %
+5.11%
% of All Funds
4.86%
Holding in Top 10
4
Holding in Top 10 Change
+4
Holding in Top 10 Change %
% of All Funds
0.05%
New
77
Increased
104
Reduced
129
Closed
57
Calls
$39.7M
Puts
$14M
Net Calls
+$25.7M
Net Calls Change
+$20.4M

Top Buyers

Rank Fund Capital Flow
1
Millennium Management
Millennium Management
New York
+$50.5M
2
SAIG
Semper Augustus Investments Group
Colorado
+$25M
3
Amundi
Amundi
France
+$20.9M
4
AQR Capital Management
AQR Capital Management
Connecticut
+$17.9M
5
Arrowstreet Capital
Arrowstreet Capital
Massachusetts
+$16M

Top Sellers

Rank Fund Capital Flow
1
ICP
Ilex Capital Partners
United Kingdom
-$55.3M
2
Fidelity Investments
Fidelity Investments
Massachusetts
-$39M
3
UBS Group
UBS Group
Switzerland
-$20.1M
4
WP
Woodline Partners
California
-$15.9M
5
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT)
United Kingdom
-$15.5M
Name Holding Trade Value Shares
Change 		Change in
Stake
State of New Jersey Common Pension Fund D
376
State of New Jersey Common Pension Fund D
New Jersey
– -$1.94M -96,438 Closed
NRD
377
Nebula Research & Development
New York
– -$1.78M -88,560 Closed
Point72 Asset Management
378
Point72 Asset Management
Connecticut
– -$1.76M -87,719 Closed
QCM
379
Qsemble Capital Management
New York
– -$1.33M -66,227 Closed
DDPIC
380
Deroy & Devereaux Private Investment Counsel
Michigan
– -$1.13M -56,250 Closed
ACM
381
Aquatic Capital Management
Illinois
– -$901K -44,824 Closed
BF
382
BOK Financial
Oklahoma
– -$738K -36,718 Closed
BC
383
Bridgefront Capital
Texas
– -$711K -35,384 Closed
IHL
384
Investment House LLC
California
– -$603K -30,000 Closed
CCIA
385
Campbell & Co Investment Adviser
Maryland
– -$540K -26,862 Closed
SM
386
Sciencast Management
New Jersey
– -$514K -25,565 Closed
Nomura Holdings
387
Nomura Holdings
Japan
– -$507K -25,241 Closed
FC
388
FORA Capital
Florida
– -$491K -24,453 Closed
SSA
389
Schonfeld Strategic Advisors
New York
– -$435K -21,653 Closed
AC
390
AXQ Capital
New Jersey
– -$420K -20,916 Closed
IFU
391
iSAM Funds (UK)
United Kingdom
– -$378K -18,827 Closed
AIM
392
Aigen Investment Management
New York
– -$365K -18,165 Closed
SBH
393
Segall Bryant & Hamill
Illinois
– -$323K -16,083 Closed
CMF
394
Counterpoint Mutual Funds
California
– -$315K -15,704 Closed
DS
395
DRW Securities
Illinois
– -$285K -14,195 Closed
GCM
396
Graham Capital Management
Connecticut
– -$262K -13,032 Closed
QC
397
Quadrature Capital
United Kingdom
– -$240K -11,960 Closed
BCM
398
Bayesian Capital Management
New York
– -$217K -10,800 Closed
AWA
399
Arete Wealth Advisors
Illinois
– -$5.47M -5,653 Closed
HT
400
Headlands Technologies
Illinois
– -$88.4K -4,400 Closed
13 14 15
16
17

OLN Hedge Fund Activity: Q3 2025 in Review

370 of the 7,620 institutional investors tracked by Wall St. Rank reported a position in Olin (OLN) for Q3 2025, worth a combined $2.58B — up 23% from $2.1B a quarter earlier.

Buyers outnumbered sellers: 77 funds opened new OLN positions and 57 closed out — a net gain of 20 holders — while 104 added to existing stakes and 129 trimmed.

The largest buyer was Millennium Management, adding an estimated $50.5M. The largest seller was Ilex Capital Partners, cutting an estimated $55.3M.

  • 370 institutional investors held Olin (OLN) as of Q3 2025, up from 352 in Q2 2025.
  • Funds reported $2.58B of Olin stock for Q3 2025, up 23% quarter-over-quarter.
  • 77 funds opened new Olin positions in Q3 2025 and 57 closed out, a net change of +20 holders.
  • The largest Olin buyer in Q3 2025 was Millennium Management, an estimated $50.5M added.
  • The largest Olin seller in Q3 2025 was Ilex Capital Partners, an estimated $55.3M sold.

Based on aggregated 13F filings for Q3 2025.