Winthrop Capital Management’s iShares MBS ETF MBB Stock Holding History

Winthrop Capital Management’s Portfolio MBB Stock Details MBB Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$6.12M	Sell	64,457 -607	-0.9%	-$58K	1.57%	20
2025 Q4	$6.2M	Sell	65,064 -3,375	-5%	-$322K	1.44%	24
2025 Q3	$6.51M	Sell	68,439 -1,316	-2%	-$124K	1.57%	22
2025 Q2	$6.55M	Sell	69,755 -3,347	-5%	-$310K	1.66%	20
2025 Q1	$6.86M	Buy	73,102 +18	+0%	+$1.67K	1.89%	16
2024 Q4	$6.71M	Buy	+73,084	New	+$6.8M	1.78%	15
2024 Q1	–	Sell	-642	Closed	-$60.4K	–	233
2023 Q4	$60.4K	Buy	+642	New	+$57.6K	0.02%	161

Other funds holding MBB

Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Envestnet Asset Management Chicago, Illinois $374B AUM 17.66% 1-Year Est. Return

LPL Financial San Diego, California $377B AUM 19.32% 1-Year Est. Return

UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

TWIM

TIAA Wealth Investment Management New York $13.1B AUM

Ameriprise Minneapolis, Minnesota $432B AUM 30.22% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

TCIIS

TIAA-CREF Individual & Institutional Services New York $26B AUM

Truist Financial Charlotte, North Carolina $74.2B AUM 21.09% 1-Year Est. Return

Winthrop Capital Management's MBB Position: Q1 2026 in Review

Winthrop Capital Management reduced its iShares MBS ETF (MBB) stake by 0.93% in Q1 2026, selling an estimated $58K and leaving 64,457 shares worth $6.12M. The position accounts for 1.57% of the portfolio, ranked #20.

Winthrop Capital Management first reported a position in MBB in Q4 2023 and has held it in 7 quarters since. The position peaked at $6.86M in Q1 2025. 1,019 funds tracked by Wall St. Rank hold MBB as of Q1 2026.

Winthrop Capital Management held 64,457 shares of iShares MBS ETF worth $6.12M as of Q1 2026.
Winthrop Capital Management sold 607 iShares MBS ETF shares in Q1 2026, an estimated $58K.
iShares MBS ETF made up 1.57% of Winthrop Capital Management's portfolio in Q1 2026, its #20 holding.
Winthrop Capital Management first reported a position in iShares MBS ETF in Q4 2023 and has held it in 7 quarters since.
Winthrop Capital Management's iShares MBS ETF position peaked at $6.86M in Q1 2025.
1,019 funds tracked by Wall St. Rank held iShares MBS ETF as of Q1 2026.

Based on Winthrop Capital Management's 13F filing for Q1 2026, filed 28 Apr 2026.