Olin Corporation
Ownership
Ownership Structure
Who owns Olin Corporation (OLN)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 94.4% of the shares are freely tradable; institutional investors hold 106.2%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Hotchkis & Wiley Capital Management LLC | 13.23 | 15,084,224 | -1.3 | 03/31/2026 |
| BlackRock Inc | 10.08 | 11,486,856 | -3.9 | 03/31/2026 |
| Dimensional Fund Advisors, Inc. | 5.41 | 6,166,477 | +9.6 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 4.77 | 5,439,407 | +0.0 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.42 | 5,038,968 | +0.0 | 03/31/2026 |
| Fuller & Thaler Asset Management Inc | 4.40 | 5,015,877 | -57.4 | 03/31/2026 |
| State Street Corp | 4.21 | 4,800,018 | +1.3 | 03/31/2026 |
| Pzena Investment Management, LLC | 3.89 | 4,431,613 | -1.7 | 03/31/2026 |
| Yacktman Asset Management Co | 3.69 | 4,209,403 | +2.9 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Windsor II Inv | 4.39 | 5,007,700 | +0.0 | 06/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.