Olin Corporation: shareholders and insiders

OLNNYSEBasic materials · Chemicals & Allied Products

Price

$17.46

November 13, 2026Market cap $2.0B

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  • The full history: 17 fiscal years, from 2009
  • The estimated fair value, with its range and its certainty
  • The full analysis, 18 a month
  • More questions to the chat on its filings
  • Excel with every year
  • An email when it reports, changes its dividend or an officer buys

Sign in with a free account to see the last 5 fiscal years.

Insiders and their shares

Purchases and sales by officers and directors from Nov 15, 2025 to Jun 18, 2026, from their own Form 4 filings.

2 Form 4s

Bought on the market

–

nobody

Sold on the market

$2.5M

5 people

From Nov 15, 2025 to Nov 15, 2026, the days the chart shows. Change its range and the figures follow.

How the sales were made, as a share of their value

  • Under a set plan0%
  • The rest100%

By year

Insiders' open-market purchases (up) and sales (down), by value, since Nov 15, 2025, on a log scale: each gridline is ten times the last. From the SEC's quarterly data sets of Form 4 filings.

2026·no buys·sold $2.4M by 4 people

  • 2025: no buys, sold $93.9K by 1 person
  • 2026: no buys, sold $2.4M by 4 people
  • Jun 17, 2026Deon CarterVP & President CAPV
    Kind
  • Jun 17, 2026Deon CarterVP & President CAPV
    Kind
  • Jun 1, 2026Florian J KohlVP & Pres,Epoxy&International
    Kind
  • Jun 1, 2026Florian J KohlVP & Pres,Epoxy&International
    Kind
  • Feb 25, 2026Deon CarterVP & President CAPV
    Kind
  • Feb 24, 2026Angela M CastleVP & Chief Legal Officer
    Kind
  • Feb 3, 2026Todd A SlaterVP & CFO
    Kind
  • Feb 3, 2026R Nichole SumnerVP & Controller
    Kind

From the Form 4s insiders file with the SEC within two business days of each trade. Before Jun 3, 2026 the table lists open-market purchases and sales only (no grants, option exercises or tax withholding), from the SEC's quarterly data sets. The 10b5-1 mark comes from the form's own box (since April 2023) or from a footnote of the filing that names the plan, where there is one.

Insiders and their shares

Every buy and sale by OLN's officers and directors from 2006 up to November 14, 2025, 20 more calendar years

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Major holders (over 5%)

Whoever comes to own more than 5% of a class of shares reports it to the SEC on Schedule 13D or 13G. Here is each holder's latest filing.

5 Holders over 5%Nov 4, 2026 Latest filing
  • Hotchkis and Wiley Capital Management, LLC
    Share of class13.4%
  • BlackRock, Inc.
    Share of class11.5%
  • Dimensional Fund Advisors LP
    Share of class5.40%
  • Vanguard Capital Management
    Share of class5.17%
  • AQR Capital Management, LLCwith 1 more person
    Share of class5.04%
Fell to 5% or less (3)

Holders whose latest filing says they hold 5% or less. After it they need not file again, so what they hold today is not known.

  • Fuller & Thaler Asset Management, Inc.4.41%May 13, 202613G/A
  • The Vanguard Group0.00%Mar 27, 202613G/A
  • FMR2.90%Feb 12, 202513G/A

From the Schedule 13D and 13G filed with the SEC since Dec 18, 2024, when they became structured data. A holder who has filed nothing since then is not shown here. A 13D is updated within two business days of any material change, a 13G up to 45 days after the quarter of the change, so the shares are those of the filing. The large managers also appear in the 13Fs.

Well-known managers

Which of the about 30 investment managers we track held the shares at the quarter end, and what they changed from the quarter before.

Sep 30, 2026 quarter end
  • AQR Capital
    In the quarter+372%
  • Citadel Advisors (Griffin)
    In the quarter+36%
  • Bridgewater (Dalio)
    In the quarter-38%
  • Point72 (Cohen)
    In the quarter+128%
  • Renaissance Technologies
    In the quarter
  • Millennium Mgmt (Englander)
    In the quarter-92%
  • D.E. Shaw
    In the quarter-98%

From the 13Fs managers file with the SEC up to 45 days after each quarter end. They show only long positions on that day, not short sales or what has changed since. No recent 13F: Pershing Square (Ackman), Scion (Burry).

Short interest

How many of the company's shares have been sold borrowed and not yet bought back, twice a month.

On Oct 15, 2026, 13.2% of its shares outstanding were held short, +5.8% since the report before.

Shares held short
14.98M
13.2%
Since the report before14.16M on Sep 30, 2026
+5.8%
2.7
5.50M
More days to cover thanof 4,578 US-listed companies with enough volume
32%
Report date
Oct 15, 2026
  • Oct 31, 2023: Shares held short 3.53M
  • Nov 15, 2023: Shares held short 3.61M
  • Nov 30, 2023: Shares held short 2.70M
  • Dec 15, 2023: Shares held short 3.48M
  • Dec 29, 2023: Shares held short 3.96M
  • Jan 12, 2024: Shares held short 4.00M
  • Jan 31, 2024: Shares held short 2.85M
  • Feb 15, 2024: Shares held short 3.01M
  • Feb 29, 2024: Shares held short 2.51M
  • Mar 15, 2024: Shares held short 2.84M
  • Mar 28, 2024: Shares held short 2.76M
  • Apr 15, 2024: Shares held short 2.36M
  • Apr 30, 2024: Shares held short 2.50M
  • May 15, 2024: Shares held short 2.56M
  • May 31, 2024: Shares held short 2.73M
  • Jun 14, 2024: Shares held short 3.13M
  • Jun 28, 2024: Shares held short 3.65M
  • Jul 15, 2024: Shares held short 2.75M
  • Jul 31, 2024: Shares held short 2.96M
  • Aug 15, 2024: Shares held short 2.86M
  • Aug 30, 2024: Shares held short 3.30M
  • Sep 13, 2024: Shares held short 2.92M
  • Sep 30, 2024: Shares held short 2.56M
  • Oct 15, 2024: Shares held short 2.49M
  • Oct 31, 2024: Shares held short 2.17M
  • Nov 15, 2024: Shares held short 2.83M
  • Nov 29, 2024: Shares held short 2.49M
  • Dec 13, 2024: Shares held short 2.85M
  • Dec 31, 2024: Shares held short 3.94M
  • Jan 15, 2025: Shares held short 4.13M
  • Jan 31, 2025: Shares held short 3.97M
  • Feb 14, 2025: Shares held short 4.94M
  • Feb 28, 2025: Shares held short 4.84M
  • Mar 14, 2025: Shares held short 5.21M
  • Mar 31, 2025: Shares held short 4.15M
  • Apr 15, 2025: Shares held short 4.84M
  • Apr 30, 2025: Shares held short 4.56M
  • May 15, 2025: Shares held short 5.61M
  • May 30, 2025: Shares held short 4.88M
  • Jun 13, 2025: Shares held short 5.16M
  • Jun 30, 2025: Shares held short 5.22M
  • Jul 15, 2025: Shares held short 5.59M
  • Jul 31, 2025: Shares held short 6.39M
  • Aug 15, 2025: Shares held short 7.72M
  • Aug 29, 2025: Shares held short 9.41M
  • Sep 15, 2025: Shares held short 9.16M
  • Sep 30, 2025: Shares held short 8.76M
  • Oct 15, 2025: Shares held short 7.68M
  • Oct 31, 2025: Shares held short 8.40M
  • Nov 14, 2025: Shares held short 9.05M
  • Nov 28, 2025: Shares held short 9.81M
  • Dec 15, 2025: Shares held short 10.07M
  • Dec 31, 2025: Shares held short 10.57M
  • Jan 15, 2026: Shares held short 11.83M
  • Jan 30, 2026: Shares held short 13.86M
  • Feb 13, 2026: Shares held short 15.06M
  • Feb 27, 2026: Shares held short 14.60M
  • Mar 13, 2026: Shares held short 15.16M
  • Mar 31, 2026: Shares held short 13.54M
  • Apr 15, 2026: Shares held short 11.05M
  • Apr 30, 2026: Shares held short 11.66M
  • May 15, 2026: Shares held short 11.44M
  • May 29, 2026: Shares held short 13.51M
  • Jun 15, 2026: Shares held short 15.20M
  • Jun 30, 2026: Shares held short 15.92M
  • Jul 15, 2026: Shares held short 14.29M
  • Jul 31, 2026: Shares held short 12.32M
  • Aug 14, 2026: Shares held short 11.09M
  • Aug 31, 2026: Shares held short 11.55M
  • Sep 15, 2026: Shares held short 12.91M
  • Sep 30, 2026: Shares held short 14.16M
  • Oct 15, 2026: Shares held short 14.98M

As brokers report them to the regulator twice a month, mid-month and at month end, published about eight business days later. A short position is shares sold borrowed and not yet bought back. The share count is the one the company's market value is figured on, from its filings. Days to cover is the shares held short over the average daily volume of the weeks between two reports.

Short sales in daily trading58.7% of the shares in the last 14 sessions' reported trades were short sales.

In the last 14 sessions, 58.7% of the shares in the reported trades were short sales, against 55.0% in the 14 before.

Last 14 sessionsOct 27, 2026 – Nov 13, 2026
58.7%
The 14 beforeOct 7, 2026 – Oct 26, 2026
55.0%
Change
+3.7 pts
Short sales a dayon average, of 1.30M shares
762.0K
More than atof 3,649 US-listed companies, same days
80%
Median of alleight in ten from 34.6% to 63.4%
50.1%
  • Oct 7, 2026: Short sales 63.8%
  • Oct 8, 2026: Short sales 68.4%
  • Oct 9, 2026: Short sales 66.1%
  • Oct 12, 2026: Short sales 45.6%
  • Oct 13, 2026: Short sales 32.5%
  • Oct 14, 2026: Short sales 46%
  • Oct 15, 2026: Short sales 44.3%
  • Oct 16, 2026: Short sales 50.7%
  • Oct 19, 2026: Short sales 45.7%
  • Oct 20, 2026: Short sales 63.8%
  • Oct 21, 2026: Short sales 63.4%
  • Oct 22, 2026: Short sales 48.1%
  • Oct 23, 2026: Short sales 52.3%
  • Oct 26, 2026: Short sales 58.1%
  • Oct 27, 2026: Short sales 45.8%
  • Oct 28, 2026: Short sales 62.8%
  • Oct 29, 2026: Short sales 70.2%
  • Oct 30, 2026: Short sales 51.3%
  • Nov 2, 2026: Short sales 52.9%
  • Nov 3, 2026: Short sales 57.6%
  • Nov 4, 2026: Short sales 61.1%
  • Nov 5, 2026: Short sales 58.6%
  • Nov 6, 2026: Short sales 66.5%
  • Nov 9, 2026: Short sales 52.8%
  • Nov 10, 2026: Short sales 52.1%
  • Nov 11, 2026: Short sales 58.8%
  • Nov 12, 2026: Short sales 68.2%
  • Nov 13, 2026: Short sales 63.7%

This is not the number of shares sold short today: it measures short sales within each day's trading, and only trades made off the exchanges. Much of it is market makers, who sell shares they do not have to fill buyers' orders and cover soon after, so for a heavily traded stock the share is often around half.

What the insiders hold

The shares each insider reports holding after their latest trade (Form 4), for those who traded on the market in the last three years.

358.8K Insiders' shares0.32% Of the company
  • Scott McDougald SuttonPresident & CEO
    Directly106.8K
  • Brett A FlaugherVP & Pres, Winchester
    Directly8,782
  • Todd A SlaterVP & CFO
    Directly44.3K
  • Damian GumpelVP & Pres, Epoxy & Corp Strat.
    Directly25.8K
  • R Nichole SumnerVP & Controller
    Directly24.8K
  • Marc EhrhardtVP & Pres Corp Development
    Directly20.0K
  • Teresa M VermillionVP & Treasurer
    Directly17.2K
  • Valerie A PetersVP, HR
    Directly14.5K
  • Florian J KohlVP & Pres,Epoxy&International
    Directly7,949
  • Kenneth Todd LanePresident & CEO
    Directly7,250
  • Deon CarterVP & President CAPV
    Directly2,248
  • Angela M CastleVP & Chief Legal Officer
    Directly1,528

A lower bound: it counts only the 12 officers and directors with a market trade since Nov 16, 2023. Anyone who neither bought nor sold since is not here, whatever they hold. The share is against the share count on the latest 10-K's cover.

The ETFs that hold it

Which of the 269 US equity ETFs we track hold the stock, and at what weight, from the funds' N-PORT filings.

26 ETFs holding it0.22% The largest weight (IYM)
  • IYMiShares U.S. Basic Materials ETF
    Weight in the fund0.22%
  • DFSVDimensional US Small Cap Value ETF
    Weight in the fund0.14%
  • IJHiShares Core S&P Mid-Cap ETF
    Weight in the fund0.06%
  • SPMDState Street(R) SPDR(R) Portfolio S&P 400(TM) Mid Cap ETF
    Weight in the fund0.06%
  • MDYState Street SPDR S&P MidCap 400SM ETF Trust
    Weight in the fund0.06%
  • VBRVanguard Small-Cap Value Index Fund
    Weight in the fund0.05%
  • SCHASchwab U.S. Small-Cap ETF
    Weight in the fund0.04%
  • FNDXSchwab Fundamental U.S. Large Company ETF
    Weight in the fund0.03%
  • VBVanguard Small-Cap Index Fund
    Weight in the fund0.03%
  • VXFVanguard Extended Market Index Fund
    Weight in the fund0.03%

26 of the 269 ETFs we track, not of every ETF on the market. The ten largest weights. Positions as each fund filed them in its latest N-PORT.

Institutional investors by quarter

Every manager that reports positions to the SEC (Form 13F), quarter by quarter: how many hold the stock, how many shares and dollars between them, and who entered, left, added or trimmed during the quarter.

412 Managers, Q2 2026$2.3B Value of their positions
  • Q3 2025: Managers 372
  • Q4 2025: Managers 380
  • Q1 2026: Managers 423
  • Q2 2026: Managers 412

Institutional investors by quarter

The fund managers holding OLN, quarter by quarter, from Q1 2013 to Q2 2025, 50 more quarters

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Q2 2026: 412 managers held 114M shares, worth $2.3B. During the quarter 71 opened a position, 82 closed one, 138 added and 121 trimmed.

The largest holders, Q2 2026

  • Hotchkis & Wiley Capital Management
    In the quarter+6.2%
  • BlackRock
    In the quarter+4.3%
  • Dimensional Fund Advisors
    In the quarter+9.6%
  • AQR Capital
    In the quarter+372%
  • Vanguard Portfolio Management
    In the quarter+0.1%
  • Vanguard Capital Management
    In the quarter+2.0%
  • State Street
    In the quarter
  • Fuller & Thaler Asset Management
    In the quarter-14%
  • Yacktman Asset Management
    In the quarter+2.9%
  • Pzena Investment Management
    In the quarter-12%

From the SEC's Form 13F data sets, Q3 2025 to Q2 2026: the long positions of every manager with more than $100 million under management, as filed up to 45 days after each quarter end. Short positions and options are not in them. Shares as reported each quarter, not adjusted for splits. The stock is matched by its CUSIP, through the SEC's fails-to-deliver files.

Pay against performance, the say-on-pay vote, buybacks by quarter and trading plans are read for S&P 500 companies only.

The full analysis

What do Olin's filings show?

Who buys and sells is one part of Olin's picture. The full Ploutos AI analysis reads everything the company has filed and shows what stands behind it, with a source for every figure.

  • A fair value range built from the filings
  • Earnings quality, debt and red flags
  • Insider and institutional moves
  • The case for and the case against

Questions about OLN's shareholders

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Ask us
Have OLN's insiders bought or sold?

From Jun 3, 2026 to Jun 18, 2026 Olin's insiders reported no purchase or sale of shares on the market.

Which well-known managers hold OLN?

7 of the managers we track held the shares on Sep 30, 2026. The largest position was AQR Capital's, worth $109M.

Is every insider transaction a purchase or a sale?

No. Many are part of their pay: share awards, option exercises and shares the company keeps for the tax. Only code P is a purchase with their own money, and code S a sale on the market.

Related pages

The other pages on US stocks, free to read. On the company pages, the last three fiscal years are open to everyone, five with a free account, and every year with Ploutos Investor.

US stocksThe market today, the sectors, the largest companies and the week's results.The market's sectorsThe 11 sectors side by side: returns, share of the market, median P/E and dividend.Compare stocksTwo companies side by side: price over up to ten years, with and without dividends, and every figure.US dividend stocksEach dividend's yield next to whether the company's cash covers it and whether it was ever cut.

The figures come from the company's SEC filings and the share price, and describe what it has reported. They are not a score or a fair value.