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M

Mammoth Energy Services TUSK · USD

Energy · US listing · 🇺🇸 United States

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3.06

-1.61%

Close of 9 Nov 2026, in USD

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Reference data, closing prices and charts across 45,000 companies, plus crypto, commodities and currencies.

Largest shareholders

As filed, so dates differ, and a group and its funds can both appear.

HolderSharesStakeChangeFiled
Wexford Capital LP22.1m45.77%—31 Dec 2025
Adage Capital Management, L.P.4.6m9.48%—31 Dec 2025
BlackRock Institutional Trust Company, N.A.1.3m2.64%+21.2k31 Dec 2025
The Vanguard Group, Inc.1m2.12%+76.8k31 Dec 2025
Dimensional Fund Advisors, L.P.699.7k1.45%−236.7k31 Dec 2025
Geode Capital Management, L.L.C.585.7k1.21%+6.6k31 Dec 2025
Bridgeway Capital Management, LLC410k0.85%+20k31 Dec 2025
State Street Investment Management (US)408.5k0.85%+1.6k31 Dec 2025
Russell Investments Trust Company247.5k0.51%+245.4k31 Dec 2025
Citadel Advisors LLC220.1k0.46%−48.2k31 Dec 2025
ETF Architect219k0.45%+20k31 Dec 2025
Renaissance Technologies LLC186.1k0.39%+52.1k31 Dec 2025
Morgan Stanley & Co. LLC184.6k0.38%+162.8k31 Dec 2025
Northern Trust Investments, Inc.164.1k0.34%−19k31 Dec 2025
JP Morgan Asset Management145.8k0.30%−16.5k31 Dec 2025

Short interest

Shares sold short, 15 Oct 2026. US exchange data.

100.5k

-9.1% on the period before. 1.2 days to cover.

Short volume

Share of the day's trading sold short, 4 Nov 2026

41.5%

Last 60 trading days.

Failed deliveries

Shares not delivered on settlement, from the SEC

  • 2 Sept 2026566 shares
  • 21 Aug 20262,569 shares
  • 17 Aug 2026963 shares

Sources and methodology

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Nothing here is investment advice. Prices can be delayed or wrong, so check with the exchange before relying on them. Data for this page. How we cover markets.