XT
MBB icon

XTX Topco’s iShares MBS ETF MBB Stock Holding History

XTX Topco’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 		$469K Buy
+4,963
New +$469K 0.01% 2520
2026
Q1 		– Sell
-3,840
Closed -$366K – 4132
2025
Q4 		$366K Buy
3,840
+1,676
+77% +$160K 0.01% 1891
2025
Q3 		$206K Sell
2,164
-3,338
-61% -$314K 0.01% 1827
2025
Q2 		$517K Buy
+5,502
New +$510K 0.02% 1074

Other funds holding MBB

Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Envestnet Asset Management
Envestnet Asset Management Chicago, Illinois $424B AUM 22.96% 1-Year Est. Return
LPL Financial
LPL Financial San Diego, California $445B AUM 25.58% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
TWIM
TIAA Wealth Investment Management New York $15B AUM
Ameriprise
Ameriprise Minneapolis, Minnesota $495B AUM 43.24% 1-Year Est. Return
Morgan Stanley
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
Truist Financial Charlotte, North Carolina $83.7B AUM 27.22% 1-Year Est. Return

XTX Topco's MBB Position: Q2 2026 in Review

XTX Topco opened a new position in iShares MBS ETF (MBB) in Q2 2026: 4,963 shares worth $469K. The stake represents 0.01% of the portfolio and ranks #2520 among its holdings. This is a return to the name: XTX Topco previously reported a position in MBB as recently as Q4 2025.

XTX Topco first reported a position in MBB in Q2 2025 and has held it in 4 quarters since. The position peaked at $517K in Q2 2025. 1,028 funds tracked by Wall St. Rank hold MBB as of Q2 2026.

  • XTX Topco held 4,963 shares of iShares MBS ETF worth $469K as of Q2 2026.
  • iShares MBS ETF was a new XTX Topco position in Q2 2026.
  • iShares MBS ETF made up 0.01% of XTX Topco's portfolio in Q2 2026, its #2520 holding.
  • XTX Topco first reported a position in iShares MBS ETF in Q2 2025 and has held it in 4 quarters since.
  • XTX Topco's iShares MBS ETF position peaked at $517K in Q2 2025.
  • 1,028 funds tracked by Wall St. Rank held iShares MBS ETF as of Q2 2026.

Based on XTX Topco's 13F filing for Q2 2026, filed 14 Aug 2026.