Latest Period
Q1 2026
Security Snapshot
OLIN Corp - Common Stock (OLN) Institutional Ownership
CUSIP: 680665205
13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026
Institutions Reporting
413
Shares (Excl. Options)
112,475,284
Price
$29.73
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- Security type / class
- Equity / Common Stock
- Symbol
- OLN on NYSE
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 112,475,284
- Total 13F value
- $3,342,284,999
- Portfolio coverage rank
- 0.01%
- Share change
- +6,211,463
- Value change
- +$266,341,942
- Number of holders
- 413
- Shares outstanding
- 113,738,706
- SEC-reported price per share
- $28.39
- Insider filing price
- $28.39
Latest holder snapshot
5 signals
Issuer context
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- OLN - OLIN Corp - Common Stock is tracked under CUSIP 680665205.
- 413 institutions reported positions in Q1 2026.
- 5 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 377 to 413 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $2,212,572,832 to $3,342,284,999.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 413 institutions filings for Q1 2026.
Security key
680665205
Latest holder period
Q1 2026
13F holders
413
13D/G owners
5
CIK / CUSIP context first
Open Q1 2026 holders
OLN full holder history
OLIN Corp SEC filings
OLIN Corp company facts
OLIN Corp insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 680665205:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
5
Security
OLN
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | 13% | +32% | $355,524,761 | +$81,480,184 | 15,278,245 | +30% | Hotchkis and Wiley Capital Management, LLC | 31 Dec 2025 |
| BlackRock, Inc. | 9.1% | $229,987,824 | 10,453,992 | BlackRock, Inc. | 31 Mar 2025 | |||
| VANGUARD CAPITAL MANAGEMENT LLC | 5.2% | $175,225,736 | 5,893,903 | Vanguard Capital Management | 31 Mar 2026 | |||
| FULLER & THALER ASSET MANAGEMENT, INC. | 4.4% | -19% | $145,209,637 | -$39,628,700 | 5,015,877 | -21% | Fuller & Thaler Asset Management, Inc. | 31 Mar 2026 |
| FMR LLC | 2.9% | $74,212,462 | 3,373,294 | FMR LLC | 31 Dec 2024 |
As of 31 Mar 2026, 413 institutional investors reported holding 112,475,284 shares of OLIN Corp - Common Stock (OLN). This represents 99% of the company’s total 113,738,706 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
74%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | 13% | 15,084,224 | -1.3% | 1.4% | $448,453,980 |
| BlackRock, Inc. | 10% | 11,486,856 | -3.9% | 0.01% | $341,504,237 |
| DIMENSIONAL FUND ADVISORS LP | 4.9% | 5,627,997 | +22% | 0.03% | $167,311,250 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 4.8% | 5,439,407 | 0% | 0.01% | $161,713,570 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.4% | 5,038,968 | 0% | 0% | $149,808,519 |
| FULLER & THALER ASSET MANAGEMENT, INC. | 4.4% | 5,015,877 | -15% | 0.5% | $149,122,021 |
| STATE STREET CORP | 4.2% | 4,800,018 | +1.3% | 0% | $142,704,535 |
| PZENA INVESTMENT MANAGEMENT LLC | 3.9% | 4,431,613 | -1.7% | 0.43% | $131,751,854 |
| YACKTMAN ASSET MANAGEMENT LP | 3.6% | 4,092,211 | +4.3% | 1.6% | $121,661,433 |
| GOLDMAN SACHS GROUP INC | 2.5% | 2,836,183 | +534% | 0.01% | $84,319,708 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.9% | 2,111,576 | +4% | 0% | $62,798,106 |
| SEMPER AUGUSTUS INVESTMENTS GROUP LLC | 1.8% | 2,029,319 | +4.4% | 7.2% | $60,331,666 |
| BANK OF AMERICA CORP /DE/ | 1.6% | 1,774,009 | -1.1% | 0% | $52,741,300 |
| MORGAN STANLEY | 1.5% | 1,651,667 | -9.3% | 0% | $49,104,071 |
| CITADEL ADVISORS LLC | 1.4% | 1,640,514 | +98% | 0.03% | $48,772,481 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.4% | 1,557,182 | +4.5% | 0.01% | $46,295,021 |
| Bank of New York Mellon Corp | 1.1% | 1,232,912 | +1% | 0.01% | $36,654,470 |
| TWO SIGMA INVESTMENTS, LP | 1.1% | 1,195,624 | 0.03% | $35,545,902 | |
| AQR CAPITAL MANAGEMENT LLC | 1% | 1,166,226 | +89% | 0.02% | $34,671,907 |
| UBS Group AG | 0.99% | 1,122,054 | +2.2% | 0.01% | $33,358,665 |
| MILLENNIUM MANAGEMENT LLC | 0.94% | 1,065,487 | +2933% | 0.02% | $31,676,929 |
| NORTHERN TRUST CORP | 0.87% | 989,256 | +2.8% | 0% | $29,410,581 |
| Invesco Ltd. | 0.7% | 795,954 | -1.1% | 0% | $23,663,713 |
| Gotham Asset Management, LLC | 0.7% | 791,070 | +138% | 0.07% | $23,518,511 |
| VICTORY CAPITAL MANAGEMENT INC | 0.69% | 782,157 | -3.6% | 0.01% | $23,253,528 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
49
Latest
Q1 2026
Rows shown
1-25 of 49
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 112,475,284 | $3,342,284,999 | +$266,341,942 | $29.73 | 413 |
| 2025 Q4 | 106,210,917 | $2,212,572,832 | +$69,061,659 | $20.83 | 377 |
| 2025 Q3 | 103,102,672 | $2,576,206,722 | -$12,595,784 | $24.99 | 365 |
| 2025 Q2 | 104,217,653 | $2,094,042,510 | +$87,916,404 | $20.09 | 346 |
| 2025 Q1 | 99,436,074 | $2,410,761,084 | -$214,780,764 | $24.24 | 351 |
| 2024 Q4 | 103,801,665 | $3,507,622,156 | +$15,074,929 | $33.80 | 377 |
| 2024 Q3 | 102,564,315 | $4,920,409,147 | -$97,111,866 | $47.98 | 389 |
| 2024 Q2 | 104,619,930 | $4,933,297,645 | -$14,419,884 | $47.15 | 437 |
| 2024 Q1 | 104,231,482 | $6,127,269,530 | -$85,123,454 | $58.80 | 429 |
| 2023 Q4 | 106,062,194 | $5,721,660,080 | -$26,727,713 | $53.95 | 421 |
| 2023 Q3 | 106,650,325 | $5,328,901,492 | -$105,390,492 | $49.98 | 423 |
| 2023 Q2 | 109,250,057 | $5,616,907,212 | -$118,071,976 | $51.39 | 458 |
| 2023 Q1 | 111,154,696 | $6,168,153,056 | -$225,050,649 | $55.50 | 475 |
| 2022 Q4 | 115,528,727 | $6,120,240,229 | -$349,541,193 | $52.94 | 466 |
| 2022 Q3 | 121,864,493 | $5,227,668,980 | -$287,758,153 | $42.88 | 440 |
| 2022 Q2 | 128,405,342 | $5,943,131,976 | +$15,336,187 | $46.28 | 469 |
| 2022 Q1 | 128,060,127 | $6,696,959,092 | -$297,321,780 | $52.28 | 466 |
| 2021 Q4 | 133,523,586 | $7,678,859,382 | -$106,596,367 | $57.52 | 452 |
| 2021 Q3 | 136,327,102 | $6,580,255,314 | -$62,339,737 | $48.25 | 378 |
| 2021 Q2 | 137,411,118 | $6,356,158,818 | +$95,692,532 | $46.26 | 355 |
| 2021 Q1 | 135,911,927 | $5,161,010,516 | +$53,067,354 | $37.97 | 309 |
| 2020 Q4 | 134,990,935 | $3,315,516,856 | +$70,995,128 | $24.56 | 280 |
| 2020 Q3 | 134,523,563 | $1,665,331,501 | -$109,749,985 | $12.38 | 250 |
| 2020 Q2 | 143,593,270 | $1,649,766,483 | -$47,945,506 | $11.49 | 258 |
| 2020 Q1 | 148,246,522 | $1,730,038,215 | +$83,652,995 | $11.67 | 253 |