Jane Street’s Regan Floating Rate MBS ETF MBSF Stock Holding History

Jane Street’s Portfolio MBSF Stock Details MBSF Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$202K	Buy	+7,878	New	+$202K	﹤0.01%	10112
2025 Q4	–	Sell	-71,335	Closed	-$1.82M	–	12623
2025 Q3	$1.82M	Buy	+71,335	New	+$1.82M	﹤0.01%	5114
2025 Q2	–	Sell	-29,738	Closed	-$757K	–	11134
2025 Q1	$757K	Buy	+29,738	New	+$759K	﹤0.01%	6082
2024 Q4	–	Sell	-24,662	Closed	-$632K	–	10793
2024 Q3	$632K	Sell	24,662 -36,073	-59%	-$922K	﹤0.01%	6777
2024 Q2	$1.54M	Buy	60,735 +16,027	+36%	+$406K	﹤0.01%	4967
2024 Q1	$1.13M	Buy	+44,708	New	+$1.13M	﹤0.01%	5193

Other funds holding MBSF

Castleview Partners Dallas, Texas $228M AUM 19.85% 1-Year Est. Return

State of New Jersey Common Pension Fund D Trenton, New Jersey $29.3B AUM 38.15% 1-Year Est. Return

CFD

Creative Financial Designs Kokomo, Indiana $2.1B AUM 23.1% 1-Year Est. Return

UAS

United Asset Strategies Garden City, New York $1.41B AUM 27.73% 1-Year Est. Return

Auour Investments Woburn, Massachusetts $349M AUM 13.68% 1-Year Est. Return

BFO

Biltmore Family Office Charlotte, North Carolina $761M AUM 31.91% 1-Year Est. Return

Royal Bank of Canada Toronto, Ontario, Canada $672B AUM 33.48% 1-Year Est. Return

CWC Advisors Lake Oswego, Oregon $225M AUM 23.94% 1-Year Est. Return

SCM

Sterneck Capital Management Kansas City, Missouri $233M AUM 21.98% 1-Year Est. Return

AWM

Apollon Wealth Management Mount Pleasant, South Carolina $8.23B AUM 30.88% 1-Year Est. Return

Jane Street's MBSF Position: Q2 2026 in Review

Jane Street opened a new position in Regan Floating Rate MBS ETF (MBSF) in Q2 2026: 7,878 shares worth $202K. The stake represents ﹤0.01% of the portfolio and ranks #10112 among its holdings. This is a return to the name: Jane Street previously reported a position in MBSF as recently as Q3 2025.

Jane Street first reported a position in MBSF in Q1 2024 and has held it in 6 quarters since. The position peaked at $1.82M in Q3 2025. 70 funds tracked by Wall St. Rank hold MBSF as of Q2 2026.

Jane Street held 7,878 shares of Regan Floating Rate MBS ETF worth $202K as of Q2 2026.
Regan Floating Rate MBS ETF was a new Jane Street position in Q2 2026.
Regan Floating Rate MBS ETF made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #10112 holding.
Jane Street first reported a position in Regan Floating Rate MBS ETF in Q1 2024 and has held it in 6 quarters since.
Jane Street's Regan Floating Rate MBS ETF position peaked at $1.82M in Q3 2025.
70 funds tracked by Wall St. Rank held Regan Floating Rate MBS ETF as of Q2 2026.

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