Banco Santander’s iShares MBS ETF MBB Stock Holding History

Banco Santander’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 Q2	–	Sell	-3,180	Closed	-$302K	–	536
2026 Q1	$302K	Buy	+3,180	New	+$304K	﹤0.01%	409

Other funds holding MBB

Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Envestnet Asset Management Chicago, Illinois $424B AUM 22.96% 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

TWIM

TIAA Wealth Investment Management New York $15B AUM

Ameriprise Minneapolis, Minnesota $495B AUM 43.24% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

TCIIS

TIAA-CREF Individual & Institutional Services New York $29.1B AUM

Truist Financial Charlotte, North Carolina $83.7B AUM 27.22% 1-Year Est. Return

Banco Santander's MBB Position: Q2 2026 in Review

Banco Santander sold out of iShares MBS ETF (MBB) in Q2 2026, closing a stake of 3,180 shares — an estimated $302K sold.

Banco Santander first reported a position in MBB in Q1 2026 and held it in 1 quarter. The position peaked at $302K in Q1 2026. 1,022 funds tracked by Wall St. Rank hold MBB as of Q2 2026.

Banco Santander reported no remaining iShares MBS ETF position as of Q2 2026 after selling out during the quarter.
Banco Santander sold 3,180 iShares MBS ETF shares in Q2 2026, an estimated $302K.
Banco Santander first reported a position in iShares MBS ETF in Q1 2026 and held it in 1 quarter.
Banco Santander's iShares MBS ETF position peaked at $302K in Q1 2026.
1,022 funds tracked by Wall St. Rank held iShares MBS ETF as of Q2 2026.

Based on Banco Santander's 13F filing for Q2 2026, filed 29 Jul 2026.