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
Q1 		$26K Buy
+10,600
New +$24.1K ﹤0.01% 12617
2025
Q4 		– Sell
-23,100
Closed -$52.9K – 14111
2025
Q3 		$52.9K Buy
23,100
+9,900
+75% +$24.4K ﹤0.01% 12170
2025
Q2 		$37K Buy
13,200
+11,300
+595% +$28.9K ﹤0.01% 11910
2025
Q1 		$3.88K Buy
1,900
+1,700
+850% +$4.53K ﹤0.01% 13932
2024
Q4 		$600 Sell
200
-1,100
-85% -$4.05K ﹤0.01% 14299
2024
Q3 		$5.32K Sell
1,300
-1,200
-48% -$4.39K ﹤0.01% 13505
2024
Q2 		$8.2K Sell
2,500
-900
-26% -$3.09K ﹤0.01% 13204
2024
Q1 		$12.4K Sell
3,400
-4,500
-57% -$17K ﹤0.01% 13362
2023
Q4 		$35.2K Buy
7,900
+6,300
+394% +$27.9K ﹤0.01% 12123
2023
Q3 		$7.42K Sell
1,600
-3,700
-70% -$18K ﹤0.01% 13257
2023
Q2 		$25.6K Sell
5,300
-93,900
-95% -$389K ﹤0.01% 12519
2023
Q1 		$419K Buy
99,200
+67,900
+217% +$404K ﹤0.01% 8670
2022
Q4 		$271K Buy
+31,300
New +$178K ﹤0.01% 9539
2019
Q3 		– Sell
-19,600
Closed -$135K – 9761
2019
Q2 		$135K Buy
+19,600
New +$249K ﹤0.01% 8408
2018
Q4 		– Sell
-8,700
Closed -$253K – 9779
2018
Q3 		$253K Buy
+8,700
New +$287K ﹤0.01% 7855

Other funds holding TUSK

WC
Wexford Capital West Palm Beach, Florida $690M AUM 57.92% 1-Year Est. Return
Adage Capital Partners
Adage Capital Partners Boston, Massachusetts $64.8B AUM 42.7% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
PLC
Peapod Lane Capital Bedford Hills, New York $122M AUM 67.29% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
BCM
Bridgeway Capital Management Houston, Texas $4.97B AUM 44.96% 1-Year Est. Return
EF
Empowered Funds Havertown, Pennsylvania $15.7B AUM 34.02% 1-Year Est. Return

Citadel Advisors's TUSK Position: Q1 2026 in Review

Citadel Advisors increased its Mammoth Energy Services (TUSK) stake by 51% in Q1 2026, buying an estimated $253K and bringing the position to 331,367 shares worth $812K. The position accounts for ﹤0.01% of the portfolio, ranked #8146.

Citadel Advisors first reported a position in TUSK in Q4 2016 and has held it in 24 quarters since. The position peaked at $6.93M in Q3 2018. 90 funds tracked by Wall St. Rank hold TUSK as of Q1 2026.

  • Citadel Advisors held 331,367 shares of Mammoth Energy Services worth $812K as of Q1 2026.
  • Citadel Advisors bought 111,256 Mammoth Energy Services shares in Q1 2026, an estimated $253K.
  • Mammoth Energy Services made up ﹤0.01% of Citadel Advisors's portfolio in Q1 2026, its #8146 holding.
  • Citadel Advisors first reported a position in Mammoth Energy Services in Q4 2016 and has held it in 24 quarters since.
  • Citadel Advisors's Mammoth Energy Services position peaked at $6.93M in Q3 2018.
  • 90 funds tracked by Wall St. Rank held Mammoth Energy Services as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.