BlackRock
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BlackRock’s Mammoth Energy Services TUSK Stock Holding History

BlackRock’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 		$3.56M Sell
1,454,839
-18,205
-1% -$41.4K ﹤0.01% 3954
2025
Q4 		$2.73M Buy
1,473,044
+20,581
+1% +$41.5K ﹤0.01% 4034
2025
Q3 		$3.33M Sell
1,452,463
-16,636
-1% -$41K ﹤0.01% 3942
2025
Q2 		$4.11M Buy
1,469,099
+8,302
+0.6% +$21.2K ﹤0.01% 3852
2025
Q1 		$2.98M Sell
1,460,797
-15,088
-1% -$40.2K ﹤0.01% 3862
2024
Q4 		$4.43M Buy
1,475,885
+11,773
+0.8% +$43.4K ﹤0.01% 3773
2024
Q3 		$5.99M Buy
1,464,112
+53,948
+4% +$197K ﹤0.01% 3628
2024
Q2 		$4.63M Sell
1,410,164
-33,451
-2% -$115K ﹤0.01% 3712
2024
Q1 		$5.25M Sell
1,443,615
-53,330
-4% -$201K ﹤0.01% 3655
2023
Q4 		$6.68M Buy
1,496,945
+120,935
+9% +$536K ﹤0.01% 3579
2023
Q3 		$6.38M Buy
1,376,010
+95,769
+7% +$466K ﹤0.01% 3564
2023
Q2 		$6.18M Buy
1,280,241
+1,020,681
+393% +$4.23M ﹤0.01% 3632
2023
Q1 		$1.1M Buy
259,560
+15,616
+6% +$93K ﹤0.01% 4307
2022
Q4 		$2.11M Buy
243,944
+6,481
+3% +$36.9K ﹤0.01% 4111
2022
Q3 		$810K Buy
237,463
+130
+0.1% +$453 ﹤0.01% 4558
2022
Q2 		$522K Buy
237,333
+8,135
+4% +$18.2K ﹤0.01% 4765
2022
Q1 		$488K Sell
229,198
-1,368
-0.6% -$2.48K ﹤0.01% 4875
2021
Q4 		$420K Buy
230,566
+6,561
+3% +$17.1K ﹤0.01% 4925
2021
Q3 		$651K Buy
224,005
+22,490
+11% +$80.2K ﹤0.01% 4685
2021
Q2 		$925K Sell
201,515
-84,662
-30% -$349K ﹤0.01% 4538
2021
Q1 		$1.52M Sell
286,177
-22,521
-7% -$114K ﹤0.01% 4383
2020
Q4 		$1.37M Buy
308,698
+15,570
+5% +$37.9K ﹤0.01% 4139
2020
Q3 		$469K Sell
293,128
-1,203
-0.4% -$1.77K ﹤0.01% 4274
2020
Q2 		$347K Sell
294,331
-575,279
-66% -$667K ﹤0.01% 4276
2020
Q1 		$651K Sell
869,610
-4,355
-0.5% -$5.74K ﹤0.01% 4001
2019
Q4 		$1.92M Sell
873,965
-16,291
-2% -$29.2K ﹤0.01% 3809
2019
Q3 		$2.21M Buy
890,256
+27,235
+3% +$129K ﹤0.01% 3716
2019
Q2 		$5.94M Buy
863,021
+21,553
+3% +$274K ﹤0.01% 3480
2019
Q1 		$14M Buy
841,468
+47,089
+6% +$1.01M ﹤0.01% 2934
2018
Q4 		$14.3M Buy
794,379
+16,266
+2% +$400K ﹤0.01% 2909
2018
Q3 		$22.6M Buy
778,113
+92,155
+13% +$3.04M ﹤0.01% 2803
2018
Q2 		$23.3M Buy
685,958
+187,868
+38% +$6.6M ﹤0.01% 2771
2018
Q1 		$16M Buy
498,090
+49,696
+11% +$1.24M ﹤0.01% 2885
2017
Q4 		$8.8M Sell
448,394
-16,440
-4% -$299K ﹤0.01% 3205
2017
Q3 		$7.84M Sell
464,834
-47,265
-9% -$690K ﹤0.01% 3304
2017
Q2 		$9.52M Buy
512,099
+46,993
+10% +$877K ﹤0.01% 3197
2017
Q1 		$10M Buy
465,106
+459,460
+8,138% +$8.76M ﹤0.01% 3106
2016
Q4 		$86K Buy
+5,646
New +$83.5K ﹤0.01% 2651

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
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
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return
EF
Empowered Funds Havertown, Pennsylvania $15.7B AUM 34.02% 1-Year Est. Return

BlackRock's TUSK Position: Q1 2026 in Review

BlackRock reduced its Mammoth Energy Services (TUSK) stake by 1.2% in Q1 2026, selling an estimated $41.4K and leaving 1,454,839 shares worth $3.56M. The position accounts for ﹤0.01% of the portfolio, ranked #3954.

BlackRock first reported a position in TUSK in Q4 2016 and has held it in 38 quarters since. The position peaked at $23.3M in Q2 2018. 90 funds tracked by Wall St. Rank hold TUSK as of Q1 2026.

  • BlackRock held 1,454,839 shares of Mammoth Energy Services worth $3.56M as of Q1 2026.
  • BlackRock sold 18,205 Mammoth Energy Services shares in Q1 2026, an estimated $41.4K.
  • Mammoth Energy Services made up ﹤0.01% of BlackRock's portfolio in Q1 2026, its #3954 holding.
  • BlackRock first reported a position in Mammoth Energy Services in Q4 2016 and has held it in 38 quarters since.
  • BlackRock's Mammoth Energy Services position peaked at $23.3M in Q2 2018.
  • 90 funds tracked by Wall St. Rank held Mammoth Energy Services as of Q1 2026.

Based on BlackRock's 13F filing for Q1 2026, filed 13 May 2026.