Jane Street’s MUFG Japan Small Cap Active ETF MJSC Stock Holding History

Jane Street’s Portfolio MJSC Stock Details MJSC Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$416K	Buy	+6,740	New	+$402K	﹤0.01%	8455
2026 Q1	–	Sell	-23,566	Closed	-$1.18M	–	13581
2025 Q4	$1.18M	Buy	23,566 +15,661	+198%	+$774K	﹤0.01%	5801
2025 Q3	$389K	Buy	+7,905	New	+$393K	﹤0.01%	8377

Other funds holding MJSC

VMPIC

Varma Mutual Pension Insurance Co Helsinki, Finland $18.9B AUM 32.24% 1-Year Est. Return

GTS Securities Miami, Florida $4.75B AUM 41.97% 1-Year Est. Return

YAL

Your Advocates Ltd Houston, Texas $350M AUM 21.03% 1-Year Est. Return

Jane Street's MJSC Position: Q2 2026 in Review

Jane Street opened a new position in MUFG Japan Small Cap Active ETF (MJSC) in Q2 2026: 6,740 shares worth $416K. The stake represents ﹤0.01% of the portfolio and ranks #8455 among its holdings. This is a return to the name: Jane Street previously reported a position in MJSC as recently as Q4 2025.

Jane Street first reported a position in MJSC in Q3 2025 and has held it in 3 quarters since. The position peaked at $1.18M in Q4 2025. 4 funds tracked by Wall St. Rank hold MJSC as of Q2 2026.

Jane Street held 6,740 shares of MUFG Japan Small Cap Active ETF worth $416K as of Q2 2026.
MUFG Japan Small Cap Active ETF was a new Jane Street position in Q2 2026.
MUFG Japan Small Cap Active ETF made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #8455 holding.
Jane Street first reported a position in MUFG Japan Small Cap Active ETF in Q3 2025 and has held it in 3 quarters since.
Jane Street's MUFG Japan Small Cap Active ETF position peaked at $1.18M in Q4 2025.
4 funds tracked by Wall St. Rank held MUFG Japan Small Cap Active ETF as of Q2 2026.

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