Vanguard Group
TUSK icon

Vanguard Group’s Mammoth Energy Services TUSK Stock Holding History

Vanguard Group’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
2025
Q4 		$1.89M Buy
1,022,411
+76,781
+8% +$155K ﹤0.01% 3575
2025
Q3 		$2.17M Sell
945,630
-11,611
-1% -$28.6K ﹤0.01% 3556
2025
Q2 		$2.68M Buy
957,241
+12,706
+1% +$32.5K ﹤0.01% 3437
2025
Q1 		$1.93M Sell
944,535
-2,162
-0.2% -$5.76K ﹤0.01% 3503
2024
Q4 		$2.84M Buy
946,697
+2,353
+0.2% +$8.67K ﹤0.01% 3460
2024
Q3 		$3.86M Buy
944,344
+167,003
+21% +$611K ﹤0.01% 3369
2024
Q2 		$2.55M Buy
777,341
+53,569
+7% +$184K ﹤0.01% 3481
2024
Q1 		$2.63M Buy
723,772
+17,369
+2% +$65.5K ﹤0.01% 3506
2023
Q4 		$3.15M Buy
706,403
+33,447
+5% +$148K ﹤0.01% 3448
2023
Q3 		$3.12M Buy
672,956
+19,709
+3% +$95.9K ﹤0.01% 3439
2023
Q2 		$3.16M Buy
653,247
+87,238
+15% +$361K ﹤0.01% 3500
2023
Q1 		$2.39M Buy
566,009
+62,234
+12% +$371K ﹤0.01% 3611
2022
Q4 		$4.36M Buy
503,775
+33,116
+7% +$189K ﹤0.01% 3368
2022
Q3 		$1.6M Buy
470,659
+77,202
+20% +$269K ﹤0.01% 3840
2022
Q2 		$865K Sell
393,457
-15,291
-4% -$34.3K ﹤0.01% 4135
2022
Q1 		$870K Sell
408,748
-75,869
-16% -$138K ﹤0.01% 4255
2021
Q4 		$882K Sell
484,617
-23,513
-5% -$61.4K ﹤0.01% 4293
2021
Q3 		$1.48M Sell
508,130
-345,211
-40% -$1.23M ﹤0.01% 4150
2021
Q2 		$3.92M Buy
853,341
+215,841
+34% +$889K ﹤0.01% 3714
2021
Q1 		$3.39M Buy
637,500
+127,933
+25% +$647K ﹤0.01% 3711
2020
Q4 		$2.27M Buy
509,567
+287,930
+130% +$701K ﹤0.01% 3631
2020
Q3 		$355K Sell
221,637
-187,125
-46% -$276K ﹤0.01% 3870
2020
Q2 		$482K Sell
408,762
-72,361
-15% -$83.9K ﹤0.01% 3776
2020
Q1 		$360K Sell
481,123
-4,315
-0.9% -$5.68K ﹤0.01% 3740
2019
Q4 		$1.07M Sell
485,438
-135,488
-22% -$243K ﹤0.01% 3622
2019
Q3 		$1.54M Sell
620,926
-108,584
-15% -$515K ﹤0.01% 3531
2019
Q2 		$5.02M Sell
729,510
-169,722
-19% -$2.16M ﹤0.01% 3174
2019
Q1 		$15M Buy
899,232
+41,741
+5% +$891K ﹤0.01% 2632
2018
Q4 		$15.4M Buy
857,491
+22,752
+3% +$559K ﹤0.01% 2563
2018
Q3 		$24.3M Buy
834,739
+232,542
+39% +$7.66M ﹤0.01% 2493
2018
Q2 		$20.5M Buy
602,197
+175,941
+41% +$6.18M ﹤0.01% 2555
2018
Q1 		$13.7M Sell
426,256
-8,408
-2% -$210K ﹤0.01% 2660
2017
Q4 		$8.53M Buy
434,664
+6,470
+2% +$118K ﹤0.01% 2893
2017
Q3 		$7.22M Buy
428,194
+9,329
+2% +$136K ﹤0.01% 2965
2017
Q2 		$7.79M Buy
418,865
+55,973
+15% +$1.05M ﹤0.01% 2898
2017
Q1 		$7.81M Buy
362,892
+38,931
+12% +$743K ﹤0.01% 2859
2016
Q4 		$4.92M Buy
+323,961
New +$4.79M ﹤0.01% 3072

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
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
BCM
Bridgeway Capital Management Houston, Texas $4.97B AUM 44.96% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Russell Investments Group
Russell Investments Group London, United Kingdom $93.1B AUM 28.26% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return

Vanguard Group's TUSK Position: Q4 2025 in Review

Vanguard Group increased its Mammoth Energy Services (TUSK) stake by 8.1% in Q4 2025, buying an estimated $155K and bringing the position to 1,022,411 shares worth $1.89M. The position accounts for ﹤0.01% of the portfolio, ranked #3575.

Vanguard Group first reported a position in TUSK in Q4 2016 and has held it in 37 quarters since. The position peaked at $24.3M in Q3 2018. 72 funds tracked by Wall St. Rank hold TUSK as of Q4 2025.

  • Vanguard Group held 1,022,411 shares of Mammoth Energy Services worth $1.89M as of Q4 2025.
  • Vanguard Group bought 76,781 Mammoth Energy Services shares in Q4 2025, an estimated $155K.
  • Mammoth Energy Services made up ﹤0.01% of Vanguard Group's portfolio in Q4 2025, its #3575 holding.
  • Vanguard Group first reported a position in Mammoth Energy Services in Q4 2016 and has held it in 37 quarters since.
  • Vanguard Group's Mammoth Energy Services position peaked at $24.3M in Q3 2018.
  • 72 funds tracked by Wall St. Rank held Mammoth Energy Services as of Q4 2025.

Based on Vanguard Group's 13F filing for Q4 2025, filed 29 Jan 2026.