OLIN CORP (OLN) Top Institutional Shareholders
OLIN CORP (OLN) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $3.28B in OLN holdings during the latest filing period.
Hotchkis & Wiley Capital Management Llc is currently the largest disclosed institutional shareholder of OLN tracked by InsiderSet, reporting ownership valued at approximately $448.45M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $346.94M, representing an estimated loss of -22.64% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 58% of the total disclosed OLN value among the investors covered in this analysis. Major shareholders include Hotchkis & Wiley Capital Management Llc, Blackrock, Inc., Dimensional Fund Advisors Lp, and several other long-term asset managers with concentrated positions in OLIN CORP (OLN).
This page ranks the largest institutional OLN shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
411
Total Reported Value
$3.28B
Largest Holder
Hotchkis & Wiley Capital Management Llc
Largest Position
$448.45M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
95
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Hotchkis & Wiley Capital Management Llc | 1.39% | 15,084,224 | $448,453,980 | $346,937,152 | -$101,516,828 | -22.64% | |
| Blackrock, Inc. | 0.01% | 11,486,856 | $341,504,237 | $264,197,688 | -$77,306,549 | -22.64% | |
| Dimensional Fund Advisors Lp | 0.03% | 5,627,997 | $167,311,250 | $129,443,931 | -$37,867,319 | -22.63% | |
| Vanguard Portfolio Management Llc | 0.01% | 5,439,407 | $161,713,570 | $125,106,361 | -$36,607,209 | -22.64% | |
| Vanguard Capital Management Llc | 0.00% | 5,038,968 | $149,808,519 | $115,896,264 | -$33,912,255 | -22.64% | |
| Fuller & Thaler Asset Management, Inc. | 0.50% | 5,015,877 | $149,122,021 | $115,365,171 | -$33,756,850 | -22.64% | |
| State Street Corp | 0.00% | 4,800,018 | $142,704,535 | $110,400,414 | -$32,304,121 | -22.64% | |
| Hancock Classic Value | Richard Pzena | 0.43% | 4,431,613 | $131,751,854 | $101,927,099 | -$29,824,755 | -22.64% |
| Yacktman Asset Management | Donald Yacktman | 1.62% | 4,092,211 | $121,661,433 | $94,120,853 | -$27,540,580 | -22.64% |
| Goldman Sachs Group Inc | 0.01% | 2,836,183 | $84,319,708 | $65,232,209 | -$19,087,499 | -22.64% | |
| Geode Capital Management, Llc | 0.00% | 2,111,576 | $62,798,106 | $48,566,248 | -$14,231,858 | -22.66% | |
| Semper Augustus Investments Group | Christopher Bloomstran | 7.21% | 2,029,319 | $60,331,666 | $46,674,337 | -$13,657,329 | -22.64% |
| Bank Of America Corp | 0.00% | 1,774,009 | $52,741,300 | $40,802,207 | -$11,939,093 | -22.64% | |
| Morgan Stanley | 0.00% | 1,651,667 | $49,104,071 | $37,988,341 | -$11,115,730 | -22.64% | |
| Citadel Advisors Llc | 0.03% | 1,640,514 | $48,772,481 | $37,731,822 | -$11,040,659 | -22.64% | |
| Charles Schwab Investment Management Inc | 0.01% | 1,557,182 | $46,295,021 | $35,815,186 | -$10,479,835 | -22.64% | |
| Bank Of New York Mellon Corp | 0.01% | 1,232,912 | $36,654,470 | $28,356,976 | -$8,297,494 | -22.64% | |
| Two Sigma Investments, Lp | 0.03% | 1,195,624 | $35,545,902 | $27,499,352 | -$8,046,550 | -22.64% | |
| Aqr Capital Management Llc | 0.02% | 1,166,226 | $34,671,907 | $26,823,198 | -$7,848,709 | -22.64% | |
| Ubs Group Ag | 0.01% | 1,122,054 | $33,358,665 | $25,807,242 | -$7,551,423 | -22.64% | |
| Millennium Management Llc | 0.02% | 1,065,487 | $31,676,929 | $24,506,201 | -$7,170,728 | -22.64% | |
| Northern Trust Corp | 0.00% | 989,256 | $29,410,581 | $22,752,888 | -$6,657,693 | -22.64% | |
| Invesco Ltd. | 0.00% | 795,954 | $23,663,713 | $18,306,942 | -$5,356,771 | -22.64% | |
| Gotham Asset Management, Llc | 0.07% | 791,070 | $23,518,511 | $18,194,610 | -$5,323,901 | -22.64% | |
| Victory Capital Management Inc | 0.01% | 782,157 | $23,253,528 | $17,989,611 | -$5,263,917 | -22.64% | |
| Raymond James Financial Inc | 0.01% | 721,822 | $21,459,752 | $16,601,906 | -$4,857,846 | -22.64% | |
| Fmr Llc | 0.00% | 719,722 | $21,397,337 | $16,553,606 | -$4,843,731 | -22.64% | |
| First Trust Advisors Lp | 0.02% | 713,041 | $21,198,723 | $16,399,943 | -$4,798,780 | -22.64% | |
| Vanguard Fiduciary Trust Co | 0.01% | 706,029 | $20,990,242 | $16,238,667 | -$4,751,575 | -22.64% | |
| Amundi | 0.01% | 684,036 | $20,336,390 | $15,732,828 | -$4,603,562 | -22.64% | |
| Bridgeway Capital Management, Llc | 0.40% | 664,843 | $19,765,782 | $15,291,389 | -$4,474,393 | -22.64% | |
| Tudor Investment Corp Et Al | 0.11% | 660,524 | $19,637,379 | $15,192,052 | -$4,445,327 | -22.64% | |
| Wolf Hill Capital Management, Lp | 2.67% | 633,516 | $18,834,431 | $14,570,868 | -$4,263,563 | -22.64% | |
| Metlife Investment Management, Llc | 0.10% | 627,557 | $18,657,270 | $14,433,811 | -$4,223,459 | -22.64% | |
| Merewether Investment Management, Lp | 0.36% | 623,377 | $18,532,998 | $14,337,671 | -$4,195,327 | -22.64% | |
| Nuveen, Llc | 0.00% | 576,883 | $17,150,731 | $13,268,309 | -$3,882,422 | -22.64% | |
| D. E. Shaw & Co., Inc. | 0.01% | 573,992 | $17,064,782 | $13,201,816 | -$3,862,966 | -22.64% | |
| Pdt Partners, Llc | 0.89% | 507,411 | $15,085,329 | $11,670,453 | -$3,414,876 | -22.64% | |
| Klcm Advisors, Inc. | 1.22% | 473,056 | $14,063,955 | $10,880,288 | -$3,183,667 | -22.64% | |
| Allianz Asset Management Gmbh | 0.02% | 470,865 | $13,998,816 | $10,829,895 | -$3,168,921 | -22.64% | |
| Retirement Systems Of Alabama | 0.04% | 452,567 | $13,454,817 | $10,409,041 | -$3,045,776 | -22.64% | |
| Grizzlyrock Capital, Llc | 10.48% | 445,094 | $13,232,645 | $10,237,162 | -$2,995,483 | -22.64% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.03% | 435,752 | $12,954,907 | $10,022,296 | -$2,932,611 | -22.64% | |
| Empowered Funds, Llc | 0.08% | 435,599 | $12,950,359 | $10,018,777 | -$2,931,582 | -22.64% | |
| Citigroup Inc | 0.01% | 407,235 | $12,107,097 | $9,366,405 | -$2,740,692 | -22.64% | |
| Quantinno Capital Management Lp | 0.02% | 405,798 | $12,064,380 | $9,333,354 | -$2,731,026 | -22.64% | |
| Mackenzie Financial Corp | 0.01% | 396,180 | $11,778,431 | $9,112,140 | -$2,666,291 | -22.64% | |
| Readystate Asset Management Lp | 0.61% | 350,842 | $10,430,533 | $8,069,366 | -$2,361,167 | -22.64% | |
| Susquehanna Portfolio Strategies, Llc | 0.15% | 328,913 | $9,778,583 | $7,564,999 | -$2,213,584 | -22.64% | |
| American Century Companies Inc | 0.00% | 318,085 | $9,456,695 | $7,315,955 | -$2,140,740 | -22.64% |
Frequently asked questions about OLN
Who owns the most OLN stock?
The largest holders of OLN are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for OLIN CORP (OLN).
Is OLN widely held by superinvestors?
Many widely followed stocks like OLN appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly OLN is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.