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 		$325 Buy
+100
New +$293 ﹤0.01% 9012
2025
Q4 		– Sell
-1,400
Closed -$3K – 10123
2025
Q3 		$3K Buy
+1,400
New +$3.45K ﹤0.01% 8570
2025
Q2 		– Sell
-700
Closed -$1K – 9771
2025
Q1 		$1K Hold
700
– – ﹤0.01% 8324
2024
Q4 		$2K Sell
700
-300
-30% -$1.1K ﹤0.01% 8094
2024
Q3 		$4K Buy
+1,000
New +$3.66K ﹤0.01% 7779
2024
Q1 		– Sell
-400
Closed -$1K – 9927
2023
Q4 		$1K Buy
+400
New +$1.77K ﹤0.01% 8596
2023
Q3 		– Sell
-400
Closed -$1K – 9866
2023
Q2 		$1K Sell
400
-2,600
-87% -$10.8K ﹤0.01% 8739
2023
Q1 		$12K Buy
3,000
+2,500
+500% +$14.9K ﹤0.01% 7407
2022
Q4 		$4K Buy
+500
New +$2.85K ﹤0.01% 8267
2022
Q1 		– Sell
-8,400
Closed -$15K – 11425
2021
Q4 		$15K Sell
8,400
-3,900
-32% -$10.2K ﹤0.01% 8707
2021
Q3 		$55K Hold
12,300
– – ﹤0.01% 7414
2021
Q2 		$56K Buy
12,300
+12,152
+8,211% +$50.1K ﹤0.01% 7515
2021
Q1 		$78K Buy
148
+22
+17% +$111 ﹤0.01% 6089
2020
Q4 		$56K Buy
+126
New +$307 ﹤0.01% 6058
2019
Q4 		– Sell
-60
Closed -$14K – 8000
2019
Q3 		$14K Buy
60
+27
+82% +$128 ﹤0.01% 6070
2019
Q2 		$22K Buy
33
+31
+1,550% +$394 ﹤0.01% 5542
2019
Q1 		$3K Buy
2
+1
+100% +$21 ﹤0.01% 6704
2018
Q4 		$1K Sell
1
-11
-92% -$270 ﹤0.01% 6797
2018
Q3 		$34K Buy
+12
New +$395 ﹤0.01% 5530

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. 94 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.
  • 94 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.