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354 hedge funds and large institutions have $2.45B invested in Olin in 2025 Q1 according to their latest regulatory filings, with 49 funds opening new positions, 152 increasing their positions, 99 reducing their positions, and 72 closing their positions.

New
Increased
Maintained
Reduced
Closed

54% more repeat investments, than reductions

Existing positions increased: 152 | Existing positions reduced: 99

36% more call options, than puts

Call options by funds: $13.3M | Put options by funds: $9.76M

0% more funds holding in top 10

Funds holding in top 10: 22 (0)

1.48% less ownership

Funds ownership: 89.08%87.6% (-1.5%)

8% less funds holding

Funds holding: 383354 (-29)

30% less capital invested

Capital invested by funds: $3.51B → $2.45B (-$1.06B)

32% less first-time investments, than exits

New positions opened: 49 | Existing positions closed: 72

Holders
354
Holders Change
-29
Holders Change %
-7.57%
% of All Funds
4.75%
Holding in Top 10
2
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
0.03%
New
49
Increased
152
Reduced
99
Closed
72
Calls
$13.3M
Puts
$9.76M
Net Calls
+$3.5M
Net Calls Change
-$25.4M
Name Holding Trade Value Shares
Change
Change in
Stake
CPG
426
Cornerstone Planning Group
New Jersey
-$298 -9 Closed

OLN Hedge Fund Activity: Q1 2025 in Review

354 of the 7,459 institutional investors tracked by Wall St. Rank reported a position in Olin (OLN) for Q1 2025, worth a combined $2.45B — down 30% from $3.51B a quarter earlier.

Sellers outnumbered buyers: 72 funds closed out of OLN and 49 opened new positions — a net loss of 23 holders — while 99 trimmed existing stakes and 152 added.

The largest buyer was Fuller & Thaler Asset Management, adding an estimated $51.8M. The largest seller was Boston Partners, exiting entirely with an estimated $128M sold.

  • 354 institutional investors held Olin (OLN) as of Q1 2025, down from 383 in Q4 2024.
  • Funds reported $2.45B of Olin stock for Q1 2025, down 30% quarter-over-quarter.
  • 49 funds opened new Olin positions in Q1 2025 and 72 closed out, a net change of -23 holders.
  • The largest Olin buyer in Q1 2025 was Fuller & Thaler Asset Management, an estimated $51.8M added.
  • The largest Olin seller in Q1 2025 was Boston Partners, an estimated $128M sold.

Based on aggregated 13F filings for Q1 2025.