HRT Financial’s Mammoth Energy Services TUSK Stock Holding History

HRT Financial’s Portfolio TUSK Stock Details TUSK Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$99K	Buy	+30,632	New	+$89.6K	﹤0.01%	3617
2025 Q4	–	Sell	-15,076	Closed	-$34K	–	4060
2025 Q3	$34K	Buy	+15,076	New	+$37.1K	﹤0.01%	2643
2023 Q2	–	Sell	-131,412	Closed	-$554K	–	3292
2023 Q1	$554K	Buy	131,412 +69,419	+112%	+$413K	0.01%	1292
2022 Q4	$536K	Buy	+61,993	New	+$353K	0.01%	1361
2021 Q2	–	Sell	-11,424	Closed	-$60K	–	3551
2021 Q1	$60K	Buy	+11,424	New	+$57.8K	﹤0.01%	2525
2020 Q1	–	Sell	-31,942	Closed	-$70K	–	1360
2019 Q4	$70K	Buy	+31,942	New	+$57.3K	﹤0.01%	1053

Other funds holding TUSK

Wexford Capital West Palm Beach, Florida $782M AUM 62.56% 1-Year Est. Return

Adage Capital Partners Boston, Massachusetts $71.3B AUM 56.8% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

PLC

Peapod Lane Capital Bedford Hills, New York $148M AUM 89.92% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return

Citadel Advisors Miami, Florida $875B AUM 40.89% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return

JHU

Johns Hopkins University Baltimore, Maryland $1.5B AUM 13.39% 1-Year Est. Return

HRT Financial's TUSK Position: Q2 2026 in Review

HRT Financial opened a new position in Mammoth Energy Services (TUSK) in Q2 2026: 30,632 shares worth $99K. The stake represents ﹤0.01% of the portfolio and ranks #3617 among its holdings. This is a return to the name: HRT Financial previously reported a position in TUSK as recently as Q3 2025.

HRT Financial first reported a position in TUSK in Q4 2019 and has held it in 6 quarters since. The position peaked at $554K in Q1 2023. 94 funds tracked by Wall St. Rank hold TUSK as of Q2 2026.

HRT Financial held 30,632 shares of Mammoth Energy Services worth $99K as of Q2 2026.
Mammoth Energy Services was a new HRT Financial position in Q2 2026.
Mammoth Energy Services made up ﹤0.01% of HRT Financial's portfolio in Q2 2026, its #3617 holding.
HRT Financial first reported a position in Mammoth Energy Services in Q4 2019 and has held it in 6 quarters since.
HRT Financial's Mammoth Energy Services position peaked at $554K in Q1 2023.
94 funds tracked by Wall St. Rank held Mammoth Energy Services as of Q2 2026.

Based on HRT Financial's 13F filing for Q2 2026, filed 14 Aug 2026.