Simplex Trading
TUSK icon

Simplex Trading’s Mammoth Energy Services TUSK Stock Holding History

Simplex Trading’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 		$11.2K Sell
3,457
-2,081
-38% -$6.09K ﹤0.01% 7597
2026
Q1 		$13.6K Buy
+5,538
New +$12.6K ﹤0.01% 7080
2025
Q3 		– Sell
-2,419
Closed -$5.96K – 10113
2025
Q2 		$6K Sell
2,419
-8,660
-78% -$22.2K ﹤0.01% 7680
2025
Q1 		$22K Buy
11,079
+9,774
+749% +$26.1K ﹤0.01% 6523
2024
Q4 		$3K Buy
+1,305
New +$4.81K ﹤0.01% 7942
2024
Q3 		– Sell
-8,061
Closed -$29.5K – 9623
2024
Q2 		$26K Buy
+8,061
New +$27.7K ﹤0.01% 6693
2024
Q1 		– Sell
-35,792
Closed -$135K – 9926
2023
Q4 		$159K Buy
35,792
+29,296
+451% +$130K ﹤0.01% 4910
2023
Q3 		$30K Buy
+6,496
New +$31.6K ﹤0.01% 6265
2023
Q2 		– Sell
-5,024
Closed -$20.8K – 9974
2023
Q1 		$21K Sell
5,024
-29,954
-86% -$178K ﹤0.01% 6880
2022
Q4 		$302K Buy
34,978
+31,362
+867% +$179K ﹤0.01% 3737
2022
Q3 		$12K Sell
3,616
-4,842
-57% -$16.9K ﹤0.01% 8099
2022
Q2 		$18K Buy
8,458
+2,984
+55% +$6.69K ﹤0.01% 7733
2022
Q1 		$11K Sell
5,474
-2,873
-34% -$5.21K ﹤0.01% 8814
2021
Q4 		$15K Buy
8,347
+2,656
+47% +$6.93K ﹤0.01% 8706
2021
Q3 		$25K Hold
5,691
– – ﹤0.01% 8250
2021
Q2 		$26K Buy
5,691
+125
+2% +$515 ﹤0.01% 8350
2021
Q1 		$29K Buy
5,566
+4,702
+544% +$23.8K ﹤0.01% 7160
2020
Q4 		$3K Buy
+864
New +$2.1K ﹤0.01% 7911
2020
Q3 		– Sell
-3,044
Closed -$4.49K – 8544
2020
Q2 		$3K Buy
+3,044
New +$3.53K ﹤0.01% 7184
2019
Q2 		– Sell
-1,597
Closed -$20.3K – 7814
2019
Q1 		$26K Buy
+1,597
New +$34.1K ﹤0.01% 5539
2018
Q4 		– Sell
-4,291
Closed -$105K – 7852
2018
Q3 		$124K Buy
+4,291
New +$141K ﹤0.01% 4205

Other funds holding TUSK

WC
Wexford Capital West Palm Beach, Florida $782M AUM 62.56% 1-Year Est. Return
Adage Capital Partners
Adage Capital Partners Boston, Massachusetts $71.3B AUM 56.8% 1-Year Est. Return
Vanguard Capital Management
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
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Jane Street
Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $875B AUM 40.89% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Marshall Wace
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

Simplex Trading's TUSK Position: Q2 2026 in Review

Simplex Trading reduced its Mammoth Energy Services (TUSK) stake by 38% in Q2 2026, selling an estimated $6.09K and leaving 3,457 shares worth $11.2K. The position accounts for ﹤0.01% of the portfolio, ranked #7597.

Simplex Trading first reported a position in TUSK in Q3 2018 and has held it in 21 quarters since. The position peaked at $302K in Q4 2022. 93 funds tracked by Wall St. Rank hold TUSK as of Q2 2026.

  • Simplex Trading held 3,457 shares of Mammoth Energy Services worth $11.2K as of Q2 2026.
  • Simplex Trading sold 2,081 Mammoth Energy Services shares in Q2 2026, an estimated $6.09K.
  • Mammoth Energy Services made up ﹤0.01% of Simplex Trading's portfolio in Q2 2026, its #7597 holding.
  • Simplex Trading first reported a position in Mammoth Energy Services in Q3 2018 and has held it in 21 quarters since.
  • Simplex Trading's Mammoth Energy Services position peaked at $302K in Q4 2022.
  • 93 funds tracked by Wall St. Rank held Mammoth Energy Services as of Q2 2026.

Based on Simplex Trading's 13F filing for Q2 2026, filed 12 Aug 2026.