GROUP ONE TRADING LLC

Position in TUSK — Mammoth Energy Services, Inc.

CIK 932540 CHICAGO, IL

Position in TUSK

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$2,525

-$20,334 QoQ

Shares Held

777

-90.5% QoQ

Ownership

0.002%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#74

of 94 holders

Holding Since

Mar 2020

11 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Industrials · as of Jun 30, 2026

GROUP ONE TRADING LLC holds $148,287 across 6 Conglomerates names. TUSK ranks #6 (1.7% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	FIP	FTAI Infrastructure Inc.	15,401	$71,460
2	CRESY	Cresud Inc	2,558	$28,675
3	NNBR	Nn Inc	5,711	$20,502
4	PAM	Pampa Energy Inc.	203	$16,672
5	BOOM	DMC Global Inc.	1,455	$8,453
6	TUSK	Mammoth Energy Services, Inc. This page	777	$2,525

11 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$2,525	777	-90.5%	Shares	Sole	2026-08-14
2025-06-30	$22,859	8,164	+41.0%	Shares	Sole	2025-08-14
2025-03-31	$11,809	5,789	-19.4%	Shares	Sole	2025-05-14
2023-03-31	$30,316	7,184	-91.5%	Shares	Sole	2023-05-12
2022-12-31	$732,542	84,687	+128.7%	Shares	Sole	2023-02-09
2022-09-30	$126,245	37,022	+4527.8%	Shares	Sole	2022-11-09
2021-09-30	$2,328	800	0.0%	Shares	Sole	2021-11-12
2021-06-30	$3,672	800	-79.5%	Shares	Sole	2021-08-10
2021-03-31	$20,748	3,900	+254.5%	Shares	Sole	2021-05-12
2020-12-31	$4,895	1,100	-12.4%	Shares	Sole	2021-02-10
2020-03-31	$940	1,256	—	Shares	Sole	2020-05-13
No filing history on record for this holder in this stock.