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Olin OLN

US equityMarket cap rank #2834ChemicalsFirearm Manufacturers
$16.27 +$0.37 (+2.33%)
Pre-market · Oct 6, 7:20 am ET · After hours $16.32 +0.28%
Open$16.02
Prev close$15.90
Day range$15.53 – $16.65
Volume22.32M
Market cap$1.85B
P/E (TTM)–
Dividend yield4.92%

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Institutional ownership105.3%+0.04 pts vs. prior quarter
Institutions holding470+1 vs. prior quarter
Insider trades (recent)34 buys / 16 sellsNet buying
Short interest11.33% of floatDays to cover 5.3 · as of 15 Sep 2026
Short-sale volume share29.0%5-day average of daily volume

Short-sale volume as % of daily volume

15%23%30%37%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$6.16M (7 inflow days, 13 outflow days).

The five largest holders on file together own 40.1% of shares outstanding.

Largest holders

  • Hotchkis and Wiley Capital Management, LLC14.06%
  • BlackRock10.51%
  • Dimensional Fund Advisors5.41%
  • Vanguard Capital Management, LLC5.14%
  • AQR Capital Management5.01%
  • Vanguard Portfolio Management, LLC4.78%
  • Aristotle Capital Management, LLC4.39%
  • State Street Global Advisors4.21%

By investor type

  • Mutual Fund85.32%
  • Hedge Fund11.89%
  • Public Company4.68%
  • Private Company1.62%
  • Government Pension Fund1.34%
  • Individual/Insider0.55%
  • Family Office/Trust0.27%
  • Government0.08%

Reported short interest has fallen from 13.96% to 11.33% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).

Short interest, by report

Report dateShares short% of floatDays to cover
15 Sep 2026 12,914,192 11.3% 5.3
31 Aug 2026 11,550,219 10.1% 4.0
14 Aug 2026 11,091,581 9.7% 3.6
31 Jul 2026 12,323,176 10.8% 3.7
15 Jul 2026 14,285,125 12.5% 4.2
30 Jun 2026 15,915,638 14.0% 3.3

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