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Calumet Inc CLMT

US equityMarket cap rank #2122
$56.03 +$0.75 (+1.36%)
Market closed · Oct 5, 10:20 pm ET · Last extended-hours $56.03 0.00%
Open$55.14
Prev close$55.28
Day range$54.59 – $56.43
Volume1.29M
Market cap$4.92B
P/E (TTM)–
Dividend yield–

Ownership & positioning

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

Institutional ownership70.4%+0.07 pts vs. prior quarter
Institutions holding229+0 vs. prior quarter
Insider trades (recent)38 buys / 12 sellsNet buying
Short interest5.10% of floatDays to cover 3.5 · as of 15 Sep 2026
Short-sale volume share13.5%5-day average of daily volume

Short-sale volume as % of daily volume

5%12%19%27%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: +$2.81M (12 inflow days, 8 outflow days).

The five largest holders on file together own 39.0% of shares outstanding.

Largest holders

  • The Heritage Group16.52%
  • Two Seas Capital LP7.53%
  • BlackRock5.95%
  • Wasserstein & Co., L.P.4.51%
  • Vanguard Capital Management, LLC4.47%
  • State Street Global Advisors3.95%
  • Adams Asset Advisors LLC2.28%
  • Geode Capital Management, LLC2.23%

By investor type

  • Mutual Fund28.88%
  • Private Company19.26%
  • Hedge Fund12.15%
  • Public Company4.97%
  • Family Office/Trust4.54%
  • Individual/Insider3.41%
  • Government Pension Fund0.53%
  • Insurance Company0.10%

Reported short interest has risen from 4.92% to 5.10% 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 4,483,670 5.1% 3.5
31 Aug 2026 3,676,468 4.2% 3.7
14 Aug 2026 3,557,882 4.0% 2.4
31 Jul 2026 3,335,395 3.8% 2.8
15 Jul 2026 3,661,359 4.2% 3.9
30 Jun 2026 4,290,075 4.9% 4.5

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