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Round Rock Advisors’s Mammoth Energy Services TUSK Stock Holding History

Round Rock 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 		$497K Buy
+152,841
New +$447K 0.06% 216

Other funds holding TUSK

VCM
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
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
Russell Investments Group
Russell Investments Group London, United Kingdom $114B AUM 41.71% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return
VFT
Vanguard Fiduciary Trust Malvern, Pennsylvania $454B AUM

Round Rock Advisors's TUSK Position: Q2 2026 in Review

Round Rock Advisors opened a new position in Mammoth Energy Services (TUSK) in Q2 2026: 152,841 shares worth $497K. The stake represents 0.06% of the portfolio and ranks #216 among its holdings.

61 funds tracked by Wall St. Rank hold TUSK as of Q2 2026.

  • Round Rock Advisors held 152,841 shares of Mammoth Energy Services worth $497K as of Q2 2026.
  • Mammoth Energy Services was a new Round Rock Advisors position in Q2 2026.
  • Mammoth Energy Services made up 0.06% of Round Rock Advisors's portfolio in Q2 2026, its #216 holding.
  • 61 funds tracked by Wall St. Rank held Mammoth Energy Services as of Q2 2026.

Based on Round Rock Advisors's 13F filing for Q2 2026, filed 12 Aug 2026.