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 Q2	$104K	Sell	11,300 -28,700	-72%	-$261K	﹤0.01%	10572
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

MML

Mercato Management Legacy Cottonwood Heights, Utah $56.7M AUM

Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Greycroft New York $44.1M AUM 24.2% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return

AFG

American Financial Group Cincinnati, Ohio $284M AUM 12.01% 1-Year Est. Return

Jane Street's MNTN Position: Q2 2026 in Review

Jane Street sold out of MNTN Inc (MNTN) in Q2 2026, closing a stake of 22,548 shares — an estimated $205K sold.

Jane Street first reported a position in MNTN in Q4 2025 and held it in 2 quarters. The position peaked at $7.07M in Q4 2025. 126 funds tracked by Wall St. Rank hold MNTN as of Q2 2026.

Jane Street reported no remaining MNTN Inc position as of Q2 2026 after selling out during the quarter.
Jane Street sold 22,548 MNTN Inc shares in Q2 2026, an estimated $205K.
Jane Street first reported a position in MNTN Inc in Q4 2025 and held it in 2 quarters.
Jane Street's MNTN Inc position peaked at $7.07M in Q4 2025.
126 funds tracked by Wall St. Rank held MNTN Inc as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.