Barclays
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Barclays’s iShares MBS ETF MBB Stock Holding History

Barclays’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
2020
Q3 		– Sell
-1,000,000
Closed -$111M – 5422
2020
Q2 		$111M Buy
1,000,000
+970,000
+3,233% +$107M 0.09% 171
2020
Q1 		$3.31M Buy
+30,000
New +$3.26M ﹤0.01% 1834
2013
Q3 		– Sell
-5,000
Closed -$526K – 7529
2013
Q2 		$526K Buy
+5,000
New +$535K ﹤0.01% 4146

Other funds holding MBB

Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Envestnet Asset Management
Envestnet Asset Management Chicago, Illinois $374B AUM 17.66% 1-Year Est. Return
LPL Financial
LPL Financial San Diego, California $377B AUM 19.32% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
TWIM
TIAA Wealth Investment Management New York $13.1B AUM
Ameriprise
Ameriprise Minneapolis, Minnesota $432B AUM 30.22% 1-Year Est. Return
Morgan Stanley
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
Truist Financial Charlotte, North Carolina $83.7B AUM 27.22% 1-Year Est. Return

Barclays's MBB Position: Q1 2026 in Review

Barclays reduced its iShares MBS ETF (MBB) stake by 56% in Q1 2026, selling an estimated $237M and leaving 1,912,803 shares worth $182M. The position accounts for 0.04% of the portfolio, ranked #317.

Barclays first reported a position in MBB in Q2 2013 and has held it in 36 quarters since. The position peaked at $726M in Q3 2025. 1,021 funds tracked by Wall St. Rank hold MBB as of Q1 2026.

  • Barclays held 1,912,803 shares of iShares MBS ETF worth $182M as of Q1 2026.
  • Barclays sold 2,480,627 iShares MBS ETF shares in Q1 2026, an estimated $237M.
  • iShares MBS ETF made up 0.04% of Barclays's portfolio in Q1 2026, its #317 holding.
  • Barclays first reported a position in iShares MBS ETF in Q2 2013 and has held it in 36 quarters since.
  • Barclays's iShares MBS ETF position peaked at $726M in Q3 2025.
  • 1,021 funds tracked by Wall St. Rank held iShares MBS ETF as of Q1 2026.

Based on Barclays's 13F filing for Q1 2026, filed 15 May 2026.