How many institutions held TUSK - MAMMOTH ENERGY SERVICES, INC. - Common Stock, $0.01 par value in Q2 2021?

49 institutional investors reported TUSK - MAMMOTH ENERGY SERVICES, INC. - Common Stock, $0.01 par value for Q2 2021. Use the holders table for investor-level position and value details.

MAMMOTH ENERGY SERVICES, INC. - Common Stock, $0.01 par value (TUSK)

Q: What does CUSIP 56155L108 represent in this 13F holders report?

CUSIP 56155L108 is the security identifier for TUSK - MAMMOTH ENERGY SERVICES, INC. - Common Stock, $0.01 par value used to aggregate holder disclosures.

CUSIP: 56155L108

Q2 2021 13F Holders as of 30 Jun 2021

Security type / class: Equity / Common Stock, $0.01 par value
Total 13F shares: 29,197,357
Total 13F value: $134,015,916
Share change: +379,999
SEC-reported price per share: $4.59
Number of holders: 49
Value change: -$31,266,582
Number of buys: 25
Number of sells: 21
Shares outstanding: 48,179,010

Security key

56155L108

Report period

Q2 2021

Institutions

Top holders

TUSK full security history Ownership snapshot Full 13F holder table Newer quarter: Q3 2026 MAMMOTH ENERGY SERVICES, INC. SEC filings MAMMOTH ENERGY SERVICES, INC. company facts

Broader feeds

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

Reporting periods

Holder history for CUSIP 56155L108

Newer quarter: Q3 2026

Recent filing periods:

Q3 2026

Ownership snapshot

Top reported holders of TUSK - MAMMOTH ENERGY SERVICES, INC. - Common Stock, $0.01 par value (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

GPOR Distribution Trust

Disclosed value leader

WEXFORD CAPITAL LP

Comparable rows

0/15

Latest evidence

30 Jun 2021

3/4/5 13F Highest disclosed value: $117,392,000 15 rows are not safely comparable across share classes. Showing 1-6 of 15 holder rows.

Quick read

WEXFORD CAPITAL LP has the largest disclosed position value at $117.39M.

0 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.

Open SEC evidence Opens WEXFORD CAPITAL LP's linked filing trail.

Disclosed position value Top 5

GPOR Distribution Trust $42.8M

WEXFORD CAPITAL LP $117.39M

Dorsey Wright & Associates $32.93M

VALUEWORKS LLC $17.38M

VANGUARD GROUP INC $3.39M

Value bars compare disclosed positions; verify each figure against the linked filing evidence.

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

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
GPOR Distribution Trust	3/4/5 10%+ Owner 3/4/5	— denominator unverified	$42,797,852 9,829,548 shares	—	30 Jun 2021
WEXFORD CAPITAL LP	13F Company 13F	— denominator unverified	$117,392,000 22,066,259 shares	—	31 Mar 2021
Dorsey Wright & Associates	13F Company 13F	— denominator unverified	$32,931,000 6,190 shares	—	31 Mar 2021
VALUEWORKS LLC	13F Company 13F	— denominator unverified	$17,384,000 3,267,736 shares	—	31 Mar 2021
VANGUARD GROUP INC	13F Company 13F	— denominator unverified	$3,391,000 637,500 shares	—	31 Mar 2021
BRIDGEWAY CAPITAL MANAGEMENT, LLC	13F Company 13F	— denominator unverified	$2,414,000 453,800 shares	—	31 Mar 2021

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 Q2 2021

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

Institutions

29,197,357

Rows available

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 Q2 2021 vs Q1 2021 Across Filers

Q1 2021 holders

Q2 2021 holders

Holder diff

-2

Investor	Q1 2021 Shares	Q2 2021 Shares	Share Diff	Share Chg %	Q1 2021 value	Q2 2021 value	Value change	Value Chg %

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

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend