XT
MNTN

XTX Topco’s MNTN Inc MNTN Stock Holding History

XTX Topco’s Portfolio MNTN Stock Details MNTN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$124K Sell
14,041
-15,515
-52% -$155K ﹤0.01% 3031
2025
Q4 		$353K Buy
+29,556
New +$426K 0.01% 1930

Other funds holding MNTN

Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
MML
Mercato Management Legacy Cottonwood Heights, Utah $54.3M AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
G
Greycroft New York $146M AUM 1.94% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT) London, United Kingdom $89.9B AUM 20.22% 1-Year Est. Return
Federated Hermes
Federated Hermes Pittsburgh, Pennsylvania $61.5B AUM 30.7% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return

XTX Topco's MNTN Position: Q1 2026 in Review

XTX Topco reduced its MNTN Inc (MNTN) stake by 52% in Q1 2026, selling an estimated $155K and leaving 14,041 shares worth $124K. The position accounts for ﹤0.01% of the portfolio, ranked #3031.

XTX Topco first reported a position in MNTN in Q4 2025 and has held it in 2 quarters since. The position peaked at $353K in Q4 2025. 95 funds tracked by Wall St. Rank hold MNTN as of Q1 2026.

  • XTX Topco held 14,041 shares of MNTN Inc worth $124K as of Q1 2026.
  • XTX Topco sold 15,515 MNTN Inc shares in Q1 2026, an estimated $155K.
  • MNTN Inc made up ﹤0.01% of XTX Topco's portfolio in Q1 2026, its #3031 holding.
  • XTX Topco first reported a position in MNTN Inc in Q4 2025 and has held it in 2 quarters since.
  • XTX Topco's MNTN Inc position peaked at $353K in Q4 2025.
  • 95 funds tracked by Wall St. Rank held MNTN Inc as of Q1 2026.

Based on XTX Topco's 13F filing for Q1 2026, filed 15 May 2026.