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OLN in the 13F filings

Olin Corp · CUSIP 680665205

Sector · Materials
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
31 Mar 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
31
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 3 listed it in both
Shares listed
11,431,234
combined, among listed positions
Reported value
$339m
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 22 buyers (opened or added shares) and 12 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +3,133,384.

Managers listing OLN in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

31 of 31 holders

ActionFiling
Citadel Advisors LLC1,640,514$49munder 0.1%Added+813,11215 May 2026 (the filing on sec.gov)
Two Sigma Investments LP1,195,624$36munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
AQR Capital Management LLC1,166,226$35munder 0.1%Added+549,86215 May 2026 (the filing on sec.gov)
Millennium Management LLC1,065,487$32munder 0.1%Added+1,030,35715 May 2026 (the filing on sec.gov)
Invesco Ltd795,954$24munder 0.1%Trimmed-8,85312 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)719,722$21munder 0.1%Trimmed-120,86715 May 2026 (the filing on sec.gov)
Tudor Investment Corp660,524$20munder 0.1%Added+496,38515 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.573,992$17munder 0.1%Added+345,35515 May 2026 (the filing on sec.gov)
PDT Partners LLC507,411$15m0.89%Newnew15 May 2026 (the filing on sec.gov)
Jane Street Group LLC313,901$9.3munder 0.1%Trimmed-12,86812 May 2026 (the filing on sec.gov)
Balyasny Asset Management LLC272,045$8.1munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP247,536$7.4m0.06%Added+29,07914 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP243,298$7.2munder 0.1%Added+8,94915 May 2026 (the filing on sec.gov)
Rokos Capital Management LLP229,817$6.8m0.05%Newnew15 May 2026 (the filing on sec.gov)
First Eagle Investment Management LLC213,752$6.4munder 0.1%Newnew14 May 2026 (the filing on sec.gov)
Walleye Capital LLC201,569$6.0munder 0.1%Trimmed-136,96213 May 2026 (the filing on sec.gov)
GAMCO Investors Inc179,164$5.3m0.05%Added+27614 May 2026 (the filing on sec.gov)
Bridgewater Associates LP178,567$5.3munder 0.1%Added+1,06115 May 2026 (the filing on sec.gov)
Holocene Advisors LP156,693$4.7munder 0.1%Added+31015 May 2026 (the filing on sec.gov)
Point72 Asset Management LP151,095$4.5munder 0.1%Trimmed-1,098,21615 May 2026 (the filing on sec.gov)
Quantbot Technologies LP136,618$4.1m0.17%Added+131,33513 May 2026 (the filing on sec.gov)
Marshall Wace LLP107,320$3.2munder 0.1%Trimmed-103,75815 May 2026 (the filing on sec.gov)
AllianceBernstein LP141,483$2.9munder 0.1%Added+12,20815 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc90,665$2.7munder 0.1%Added+6,67815 May 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC62,777$1.9munder 0.1%Added+25,54715 May 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (6)

Exited (4)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
11 in Q3 2024 to 5 in Q2 2026

Tracked managers listing it, at least.

051015202014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
OLN by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20133$8.7mn.a.n.a.
Q3 20133$10mn.a.n.a.
Q4 20132$34mn.a.n.a.
Q1 20144$41mn.a.n.a.
Q2 20142$42mn.a.n.a.
Q3 20142$37mn.a.n.a.
Q4 20142$3.2mn.a.n.a.
Q1 20154$20mn.a.n.a.
Q2 20154$50mn.a.n.a.
Q3 20159$201mn.a.n.a.
Q4 20158$317mn.a.n.a.
Q1 20166$308mn.a.n.a.
Q2 20167$589mn.a.n.a.
Q3 20165$423mn.a.n.a.
Q4 20165$274mn.a.n.a.
Q1 20178$397mn.a.n.a.
Q2 20178$571mn.a.n.a.
Q3 20177$487mn.a.n.a.
Q4 20179$446mn.a.n.a.
Q1 201812$249mn.a.n.a.
Q2 201810$653mn.a.n.a.
Q3 201810$365mn.a.n.a.
Q4 20186$169mn.a.n.a.
Q1 20198$674mn.a.n.a.
Q2 20194$585mn.a.n.a.
Q3 20196$479mn.a.n.a.
Q4 20198$407mn.a.n.a.
Q1 20206$424mn.a.n.a.
Q2 20207$180mn.a.n.a.
Q3 20205$191mn.a.n.a.
Q4 20206$1.0bnn.a.n.a.
Q1 20216$1.5bnn.a.n.a.
Q2 20217$1.8bnn.a.n.a.
Q3 202112$1.7bnn.a.n.a.
Q4 202114$2.0bnn.a.n.a.
Q1 202218$1.2bnn.a.n.a.
Q2 20228$773mn.a.n.a.
Q3 20229$541mn.a.n.a.
Q4 202211$838mn.a.n.a.
Q1 202317$1.0bnn.a.n.a.
Q2 202313$737mn.a.n.a.
Q3 202310$599mn.a.n.a.
Q4 20238$710m51
Q1 20249$861m45
Q2 20247$556m60
Q3 202411$834m91
Q4 20248$196m60
Q1 20258$72m71
Q2 20256$41m60
Q3 20256$36m33
Q4 20255$30m1817
Q1 20269$75m2212
Q2 20265$19m1719

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

OLN and LIN →OLN and GLW →OLN and HWM →Choose a stock to compare with OLN →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own OLN, latest filings →Back to the 13F Explorer →