What does CUSIP 680665205 represent in this 13F holders report?

CUSIP 680665205 is the security identifier for OLN - OLIN Corp - Common Stock used to aggregate holder disclosures.

How many institutions held OLN - OLIN Corp - Common Stock in Q1 2021?

309 institutional investors reported OLN - OLIN Corp - Common Stock for Q1 2021. Use the holders table for investor-level position and value details.

OLIN Corp - Common Stock (OLN)

CUSIP: 680665205

Q1 2021 13F Holders as of 31 Mar 2021

Security type / class: Equity / Common Stock
Total 13F shares: 135,911,927
Total 13F value: $5,161,010,516
Share change: +1,103,722
Put/Call ratio: 77%
SEC-reported price per share: $37.97
Number of holders: 309
Value change: +$53,067,354
Number of buys: 148
Number of sells: 135
Shares outstanding: 113,738,706

Security key

680665205

Report period

Q1 2021

Institutions

309

Top holders

OLN full security history Ownership snapshot Full 13F holder table Newer quarter: Q2 2021 Previous quarter: Q4 2020 OLIN Corp SEC filings OLIN Corp company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 680665205

Newer quarter: Q2 2021 Previous quarter: Q4 2020

Recent filing periods:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Ownership snapshot

Top reported holders of OLN - OLIN Corp - Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

FMR LLC

Disclosed value leader

FMR LLC

Comparable rows

15/15

Latest evidence

31 Dec 2020

13F Lead comparable stake: 21% Showing 1-6 of 15 holder rows.

Quick read

FMR LLC leads the comparable SEC ownership view at 21%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Comparable ownership Top 5

FMR LLC 21%

Sachem Head Capital Management LP 13%

BlackRock Finance, Inc. 13%

VANGUARD GROUP INC 12%

DIMENSIONAL FUND ADVISORS LP 8%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
FMR LLC	13F Company 13F	21%	$581,564,000 23,679,305 shares	—	31 Dec 2020
Sachem Head Capital Management LP	13F Company 13F	13%	$367,172,000 14,950,000 shares	—	31 Dec 2020
BlackRock Finance, Inc.	13F Company 13F	13%	$353,952,000 14,411,733 shares	—	31 Dec 2020
VANGUARD GROUP INC	13F Company 13F	12%	$322,957,000 13,149,742 shares	—	31 Dec 2020
DIMENSIONAL FUND ADVISORS LP	13F Company 13F	8%	$222,722,000 9,068,289 shares	—	31 Dec 2020
STATE STREET CORP	13F Company 13F	6.1%	$171,186,000 6,970,115 shares	—	31 Dec 2020

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q1 2021

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

309

135,911,927

Rows available

309

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q1 2021 vs Q4 2020 Across Filers

Q4 2020 holders

280

Q1 2021 holders

309

Holder diff

Investor	Q4 2020 Shares	Q1 2021 Shares	Share Diff	Share Chg %	Q4 2020 value	Q1 2021 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend