Citadel Advisors
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Citadel Advisors’s Mammoth Energy Services TUSK Stock Holding History

Citadel Advisors’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 		$459K Buy
+141,100
New +$413K ﹤0.01% 10078
2025
Q2 		– Sell
-200
Closed -$408 – 15167
2025
Q1 		$408 Hold
200
– – ﹤0.01% 14270
2024
Q4 		$600 Sell
200
-5,900
-97% -$21.7K ﹤0.01% 14298
2024
Q3 		$24.9K Sell
6,100
-5,300
-46% -$19.4K ﹤0.01% 12603
2024
Q2 		$37.4K Sell
11,400
-11,400
-50% -$39.1K ﹤0.01% 12050
2024
Q1 		$83K Sell
22,800
-11,100
-33% -$41.8K ﹤0.01% 11611
2023
Q4 		$151K Buy
33,900
+13,100
+63% +$58.1K ﹤0.01% 10366
2023
Q3 		$96.5K Sell
20,800
-5,300
-20% -$25.8K ﹤0.01% 10945
2023
Q2 		$126K Buy
26,100
+3,700
+17% +$15.3K ﹤0.01% 10581
2023
Q1 		$94.5K Buy
22,400
+11,200
+100% +$66.7K ﹤0.01% 11347
2022
Q4 		$96.9K Buy
11,200
+300
+3% +$1.71K ﹤0.01% 11265
2022
Q3 		$37K Sell
10,900
-8,400
-44% -$29.3K ﹤0.01% 11798
2022
Q2 		$42K Buy
+19,300
New +$43.2K ﹤0.01% 12036
2021
Q2 		– Sell
-15,900
Closed -$85K – 14456
2021
Q1 		$85K Buy
+15,900
New +$80.4K ﹤0.01% 12603
2018
Q4 		– Sell
-8,300
Closed -$242K – 9778
2018
Q3 		$242K Buy
+8,300
New +$273K ﹤0.01% 7934

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
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
BCM
Bridgeway Capital Management Houston, Texas $5.69B AUM 60.64% 1-Year Est. Return

Citadel Advisors's TUSK Position: Q2 2026 in Review

Citadel Advisors increased its Mammoth Energy Services (TUSK) stake by 36% in Q2 2026, buying an estimated $353K and bringing the position to 452,163 shares worth $1.47M. The position accounts for ﹤0.01% of the portfolio, ranked #7264.

Citadel Advisors first reported a position in TUSK in Q4 2016 and has held it in 25 quarters since. The position peaked at $6.93M in Q3 2018. 93 funds tracked by Wall St. Rank hold TUSK as of Q2 2026.

  • Citadel Advisors held 452,163 shares of Mammoth Energy Services worth $1.47M as of Q2 2026.
  • Citadel Advisors bought 120,796 Mammoth Energy Services shares in Q2 2026, an estimated $353K.
  • Mammoth Energy Services made up ﹤0.01% of Citadel Advisors's portfolio in Q2 2026, its #7264 holding.
  • Citadel Advisors first reported a position in Mammoth Energy Services in Q4 2016 and has held it in 25 quarters since.
  • Citadel Advisors's Mammoth Energy Services position peaked at $6.93M in Q3 2018.
  • 93 funds tracked by Wall St. Rank held Mammoth Energy Services as of Q2 2026.

Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.