Olin
OLN
378 hedge funds and large institutions have $2.21B invested in Olin in 2025 Q4 according to their latest regulatory filings, with 74 funds opening new positions, 109 increasing their positions, 132 reducing their positions, and 59 closing their positions.
145% more call options, than puts
Call options by funds: $41.8M | Put options by funds: $17.1M
25% more first-time investments, than exits
New positions opened: 74 | Existing positions closed: 59
3.12% more ownership
Funds ownership: 89.94% → 93.06% (+3.1%)
2% more funds holding
Funds holding: 370 → 378 (+8)
14% less capital invested
Capital invested by funds: $2.58B → $2.21B (-$364M)
17% less repeat investments, than reductions
Existing positions increased: 109 | Existing positions reduced: 132
50% less funds holding in top 10
Funds holding in top 10: 4 → 2 (-2)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
OAG
Orbis Allan Gray
Hamilton,
Bermuda
|
+$67.1M |
| 2 |
Hotchkis & Wiley Capital Management
Los Angeles,
California
|
+$55.8M |
| 3 |
Point72 Asset Management
Stamford,
Connecticut
|
+$26.9M |
| 4 |
Pzena Investment Management
New York
|
+$14.5M |
| 5 |
Citadel Advisors
Miami,
Florida
|
+$12.7M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Millennium Management
New York
|
-$52.9M |
| 2 |
Thrivent Financial for Lutherans
Minneapolis,
Minnesota
|
-$34.4M |
| 3 |
AQR Capital Management
Greenwich,
Connecticut
|
-$25.8M |
| 4 |
Amundi
Paris,
France
|
-$16.9M |
| 5 |
Arrowstreet Capital
Boston,
Massachusetts
|
-$16.1M |
OLN Hedge Fund Activity: Q4 2025 in Review
378 of the 8,265 institutional investors tracked by Wall St. Rank reported a position in Olin (OLN) for Q4 2025, worth a combined $2.21B — down 14% from $2.58B a quarter earlier.
Buyers outnumbered sellers: 74 funds opened new OLN positions and 59 closed out — a net gain of 15 holders — while 109 added to existing stakes and 132 trimmed.
The largest buyer was Orbis Allan Gray, adding an estimated $67.1M. The largest seller was Millennium Management, cutting an estimated $52.9M.
- 378 institutional investors held Olin (OLN) as of Q4 2025, up from 370 in Q3 2025.
- Funds reported $2.21B of Olin stock for Q4 2025, down 14% quarter-over-quarter.
- 74 funds opened new Olin positions in Q4 2025 and 59 closed out, a net change of +15 holders.
- The largest Olin buyer in Q4 2025 was Orbis Allan Gray, an estimated $67.1M added.
- The largest Olin seller in Q4 2025 was Millennium Management, an estimated $52.9M sold.
Based on aggregated 13F filings for Q4 2025.