OLN Institutional Ownership & Shareholders
OLIN CORP (OLN) is currently held by 391 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $2.19B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Hotchkis & Wiley Capital Management Llc is currently the largest disclosed institutional shareholder of OLN tracked by InsiderSet, reporting ownership valued at approximately $317.54M in its June 30, 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 $290.79M, representing an estimated loss of -8.43% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 60% 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
391
Total Reported Value
$2.19B
Largest Holder
Hotchkis & Wiley Capital Management Llc
Largest Position
$317.54M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
53
Funds Exiting Positions
1
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Hotchkis & Wiley Capital Management Llc | 0.93% | 16,021,214 | $317,540,461 | $290,785,034 | -$26,755,427 | -8.43% | |
| Blackrock, Inc. | 0.00% | 11,984,254 | $237,527,921 | $217,514,210 | -$20,013,711 | -8.43% | |
| Dimensional Fund Advisors Lp | 0.02% | 6,166,477 | $122,229,374 | $111,921,558 | -$10,307,816 | -8.43% | |
| Aqr Capital Management Llc | 0.04% | 5,510,335 | $109,214,844 | $100,012,580 | -$9,202,264 | -8.43% | |
| Vanguard Portfolio Management Llc | 0.00% | 5,447,478 | $107,969,014 | $98,871,726 | -$9,097,288 | -8.43% | |
| Vanguard Capital Management Llc | 0.00% | 5,138,572 | $101,846,497 | $93,265,082 | -$8,581,415 | -8.43% | |
| State Street Corp | 0.00% | 4,799,788 | $95,131,798 | $87,116,152 | -$8,015,646 | -8.43% | |
| Fuller & Thaler Asset Management, Inc. | 0.23% | 4,301,590 | $85,257,521 | $78,073,859 | -$7,183,663 | -8.43% | |
| Yacktman Asset Management | Donald Yacktman | 0.79% | 4,292,873 | $66,539,532 | $77,915,645 | +$11,376,113 | +17.10% |
| Pzena Investment Management | Richard Pzena | 0.18% | 3,966,952 | $61,487,756 | $72,000,179 | +$10,512,423 | +17.10% |
| Goldman Sachs Group Inc | 0.01% | 2,550,105 | $50,543,087 | $46,284,406 | -$4,258,681 | -8.43% | |
| Citadel Advisors Llc | 0.03% | 2,233,816 | $44,274,233 | $40,543,760 | -$3,730,473 | -8.43% | |
| Semper Augustus Investments Group | Christopher Bloomstran | 4.83% | 2,153,826 | $42,688,822 | $39,091,942 | -$3,596,880 | -8.43% |
| Geode Capital Management, Llc | 0.00% | 2,107,148 | $41,777,499 | $38,244,736 | -$3,532,763 | -8.46% | |
| Charles Schwab Investment Management Inc | 0.00% | 1,543,162 | $30,585,471 | $28,008,390 | -$2,577,081 | -8.43% | |
| Morgan Stanley | 0.00% | 1,384,610 | $27,442,998 | $25,130,671 | -$2,312,327 | -8.43% | |
| Captrust Financial Advisors | 0.04% | 1,321,951 | $26,201,064 | $23,993,411 | -$2,207,653 | -8.43% | |
| Bank Of America Corp | 0.00% | 1,284,002 | $25,448,912 | $23,304,636 | -$2,144,276 | -8.43% | |
| Bank Of New York Mellon Corp | 0.00% | 1,200,056 | $23,785,113 | $21,781,016 | -$2,004,097 | -8.43% | |
| Jpmorgan Chase & Co | 0.00% | 976,669 | $20,439,274 | $17,726,542 | -$2,712,732 | -13.27% | |
| Northern Trust Corp | 0.00% | 1,004,672 | $19,912,599 | $18,234,797 | -$1,677,802 | -8.43% | |
| Allianz Asset Management Gmbh | 0.02% | 972,709 | $19,279,092 | $17,654,668 | -$1,624,424 | -8.43% | |
| Invesco Ltd. | 0.00% | 779,328 | $15,446,282 | $14,144,803 | -$1,301,479 | -8.43% | |
| Victory Capital Management Inc | 0.01% | 773,430 | $15,329,382 | $14,037,754 | -$1,291,628 | -8.43% | |
| Bridgeway Capital Management, Llc | 0.26% | 744,606 | $14,758,091 | $13,514,599 | -$1,243,492 | -8.43% | |
| Ubs Group Ag | 0.00% | 720,044 | $14,271,272 | $13,068,799 | -$1,202,473 | -8.43% | |
| Vanguard Fiduciary Trust Co | 0.00% | 719,513 | $14,260,748 | $13,059,161 | -$1,201,587 | -8.43% | |
| Raymond James Financial Inc | 0.00% | 683,398 | $13,544,961 | $12,403,674 | -$1,141,287 | -8.43% | |
| Fmr Llc | 0.00% | 615,925 | $12,207,615 | $11,179,039 | -$1,028,576 | -8.43% | |
| Nuveen, Llc | 0.00% | 584,249 | $11,579,815 | $10,604,119 | -$975,696 | -8.43% | |
| Pdt Partners, Llc | 0.58% | 558,806 | $11,075,535 | $10,142,329 | -$933,206 | -8.43% | |
| Gotham Asset Management, Llc | 0.03% | 552,774 | $10,955,981 | $10,032,848 | -$923,133 | -8.43% | |
| Empowered Funds, Llc | 0.05% | 505,046 | $10,010,012 | $9,166,585 | -$843,427 | -8.43% | |
| Two Sigma Investments, Lp | 0.01% | 491,216 | $9,735,901 | $8,915,570 | -$820,331 | -8.43% | |
| Segall Bryant & Hamill, Llc | 0.12% | 490,909 | $9,729,816 | $8,909,998 | -$819,818 | -8.43% | |
| First Trust Advisors Lp | 0.01% | 483,174 | $9,576,518 | $8,769,608 | -$806,910 | -8.43% | |
| Metlife Investment Management, Llc | 0.04% | 457,439 | $9,066,441 | $8,302,518 | -$763,923 | -8.43% | |
| Balyasny Asset Management L.P. | 0.02% | 452,869 | $8,975,864 | $8,219,572 | -$756,292 | -8.43% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.00% | 301,587 | $8,966,182 | $5,473,804 | -$3,492,378 | -38.95% | |
| Klcm Advisors, Inc. | 0.71% | 448,278 | $8,884,870 | $8,136,246 | -$748,624 | -8.43% | |
| Retirement Systems Of Alabama | 0.03% | 431,103 | $8,544,461 | $7,824,519 | -$719,942 | -8.43% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.02% | 428,602 | $8,494,892 | $7,779,126 | -$715,766 | -8.43% | |
| Quantinno Capital Management Lp | 0.01% | 426,132 | $8,445,948 | $7,734,296 | -$711,652 | -8.43% | |
| Grizzlyrock Capital, Llc | 5.48% | 395,094 | $7,830,763 | $7,170,956 | -$659,807 | -8.43% | |
| American Century Companies Inc | 0.00% | 355,085 | $7,037,810 | $6,444,793 | -$593,017 | -8.43% | |
| Point72 Asset Management, L.P. | 0.01% | 344,951 | $6,836,929 | $6,260,861 | -$576,068 | -8.43% | |
| Old West Investment Management, Llc | 0.68% | 323,869 | $6,419,083 | $5,878,222 | -$540,861 | -8.43% | |
| Susquehanna Portfolio Strategies, Llc | 0.09% | 299,428 | $5,934,663 | $5,434,618 | -$500,045 | -8.43% | |
| Lpl Financial Llc | 0.00% | 292,319 | $5,793,770 | $5,305,590 | -$488,180 | -8.43% | |
| Los Angeles Capital Management Llc | 0.02% | 289,311 | $5,734,144 | $5,250,995 | -$483,149 | -8.43% |
Frequently asked questions about OLN
Who are the largest institutional holders of OLN?
The largest institutional holders of OLN reported in the latest SEC Form 13F filings include Hotchkis & Wiley Capital Management Llc, Blackrock, Inc., Dimensional Fund Advisors Lp, Aqr Capital Management Llc, and Vanguard Portfolio Management Llc. InsiderSet ranks institutional holders by their latest reported OLN position.
What is OLN institutional ownership?
This page tracks OLN positions reported by institutional investment managers through SEC Form 13F. OLIN CORP (OLN) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own OLN?
InsiderSet currently tracks 391 institutional managers reporting OLN holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of OLN shareholders.
How much OLN stock do institutions own?
Institutional investment managers disclosed approximately $2.19B in OLN holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was OLN institutional ownership last updated?
The latest OLN institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional OLN holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its OLN position after the reporting date.
Are institutions buying or selling OLN?
Institutional buying and selling can be analyzed by comparing OLN positions across consecutive 13F reporting periods. InsiderSet's OLN Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View OLN ownership changes.
How has OLN institutional ownership changed over time?
InsiderSet tracks OLN institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.