Jane Street’s Mama's Creations MAMA Stock Holding History

Jane Street’s Portfolio MAMA Stock Details MAMA Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	–	Sell	-25,100	Closed	-$339K	–	12404
2025 Q4	$339K	Sell	25,100 -26,300	-51%	-$302K	﹤0.01%	8555
2025 Q3	$540K	Sell	51,400 -107,300	-68%	-$973K	﹤0.01%	7693
2025 Q2	$1.32M	Sell	158,700 -700	-0.4%	-$5.04K	﹤0.01%	5112
2025 Q1	$1.04M	Buy	159,400 +100	+0.1%	+$689	﹤0.01%	5503
2024 Q4	$1.27M	Buy	159,300 +127,000	+393%	+$1.05M	﹤0.01%	4947
2024 Q3	$236K	Buy	+32,300	New	+$248K	﹤0.01%	8407

Other funds holding MAMA

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Wasatch Advisors Salt Lake City, Utah $15.3B AUM 25.06% 1-Year Est. Return

NCGI

Next Century Growth Investors Plymouth, Minnesota $1.38B AUM 102.34% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return

First Eagle Investment Management New York $59B AUM 32.99% 1-Year Est. Return

PCM

Portolan Capital Management Boston, Massachusetts $1.88B AUM 115.74% 1-Year Est. Return

DCM

Driehaus Capital Management Chicago, Illinois $13.6B AUM 173.98% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

PWAM

Park West Asset Management San Francisco, California $1.18B AUM 47.25% 1-Year Est. Return

Jane Street's MAMA Position: Q1 2026 in Review

Jane Street reduced its Mama's Creations (MAMA) stake by 15% in Q1 2026, selling an estimated $377K and leaving 144,854 shares worth $2.22M. The position accounts for ﹤0.01% of the portfolio, ranked #4884.

Jane Street first reported a position in MAMA in Q3 2023 and has held it in 9 quarters since. The position peaked at $2.29M in Q4 2025. 166 funds tracked by Wall St. Rank hold MAMA as of Q1 2026.

Jane Street held 144,854 shares of Mama's Creations worth $2.22M as of Q1 2026.
Jane Street sold 24,831 Mama's Creations shares in Q1 2026, an estimated $377K.
Mama's Creations made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #4884 holding.
Jane Street first reported a position in Mama's Creations in Q3 2023 and has held it in 9 quarters since.
Jane Street's Mama's Creations position peaked at $2.29M in Q4 2025.
166 funds tracked by Wall St. Rank held Mama's Creations as of Q1 2026.

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