Jane Street’s Monarch Ambassador Income Index ETF MAMB Stock Holding History

Jane Street’s Portfolio MAMB Stock Details MAMB Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q2	–	Sell	-10,021	Closed	-$228K	–	10371
2025 Q1	$228K	Sell	10,021 -189	-2%	-$4.26K	﹤0.01%	8254
2024 Q4	$226K	Buy	+10,210	New	+$232K	﹤0.01%	8205

Other funds holding MAMB

Kingsview Wealth Management Grants Pass, Oregon $8.25B AUM 24.8% 1-Year Est. Return

Citadel Advisors Miami, Florida $875B AUM 40.89% 1-Year Est. Return

LPL Financial San Diego, California $445B AUM 25.58% 1-Year Est. Return

UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

Raymond James Financial St Petersburg, Florida $369B AUM 28.27% 1-Year Est. Return

Jane Street's MAMB Position: Q2 2025 in Review

Jane Street sold out of Monarch Ambassador Income Index ETF (MAMB) in Q2 2025, closing a stake of 10,021 shares — an estimated $228K sold.

Jane Street first reported a position in MAMB in Q4 2024 and held it in 2 quarters. The position peaked at $228K in Q1 2025. 5 funds tracked by Wall St. Rank hold MAMB as of Q2 2025.

Jane Street reported no remaining Monarch Ambassador Income Index ETF position as of Q2 2025 after selling out during the quarter.
Jane Street sold 10,021 Monarch Ambassador Income Index ETF shares in Q2 2025, an estimated $228K.
Jane Street first reported a position in Monarch Ambassador Income Index ETF in Q4 2024 and held it in 2 quarters.
Jane Street's Monarch Ambassador Income Index ETF position peaked at $228K in Q1 2025.
5 funds tracked by Wall St. Rank held Monarch Ambassador Income Index ETF as of Q2 2025.

Based on Jane Street's 13F filing for Q2 2025, filed 14 Aug 2025.