Jane Street
MNTN

Jane Street’s MNTN Inc MNTN Stock Holding History

Jane Street’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 		$352K Sell
40,000
-15,100
-27% -$151K ﹤0.01% 8860
2025
Q4 		$658K Buy
55,100
+40,500
+277% +$583K ﹤0.01% 7100
2025
Q3 		$271K Buy
+14,600
New +$332K ﹤0.01% 9106

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 $56.7M 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

Jane Street's MNTN Position: Q1 2026 in Review

Jane Street reduced its MNTN Inc (MNTN) stake by 96% in Q1 2026, selling an estimated $5.69M and leaving 22,548 shares worth $198K. The position accounts for ﹤0.01% of the portfolio, ranked #10160.

Jane Street first reported a position in MNTN in Q4 2025 and has held it in 2 quarters since. The position peaked at $7.07M in Q4 2025. 95 funds tracked by Wall St. Rank hold MNTN as of Q1 2026.

  • Jane Street held 22,548 shares of MNTN Inc worth $198K as of Q1 2026.
  • Jane Street sold 569,320 MNTN Inc shares in Q1 2026, an estimated $5.69M.
  • MNTN Inc made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #10160 holding.
  • Jane Street first reported a position in MNTN Inc in Q4 2025 and has held it in 2 quarters since.
  • Jane Street's MNTN Inc position peaked at $7.07M in Q4 2025.
  • 95 funds tracked by Wall St. Rank held MNTN Inc as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.