Advisory Research’s iShares MBS ETF MBB Stock Holding History

Advisory Research’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	$1.66M	Hold	17,518	–	–	0.2%	80
2025 Q4	$1.67M	Hold	17,518	–	–	0.21%	82
2025 Q3	$1.67M	Hold	17,518	–	–	0.22%	84
2025 Q2	$1.64M	Hold	17,518	–	–	0.25%	84
2025 Q1	$1.64M	Hold	17,518	–	–	0.29%	71
2024 Q4	$1.61M	Hold	17,518	–	–	0.27%	81
2024 Q3	$1.68M	Hold	17,518	–	–	0.3%	77
2024 Q2	$1.61M	Hold	17,518	–	–	0.3%	78
2024 Q1	$1.62M	Hold	17,518	–	–	0.32%	74
2023 Q4	$1.65M	Hold	17,518	–	–	0.25%	105
2023 Q3	$1.56M	Hold	17,518	–	–	0.22%	132
2023 Q2	$1.63M	Hold	17,518	–	–	0.21%	141
2023 Q1	$1.66M	Sell	17,518 -2,105	-11%	-$199K	0.27%	93
2022 Q4	$1.82M	Hold	19,623	–	–	0.17%	90
2022 Q3	$1.8M	Sell	19,623 -8,142	-29%	-$789K	0.18%	94
2022 Q2	$2.71M	Sell	27,765 -2,990	-10%	-$293K	0.26%	70
2022 Q1	$3.13M	Sell	30,755 -8,310	-21%	-$867K	0.25%	72
2021 Q4	$4.2M	Sell	39,065 -4,655	-11%	-$501K	0.33%	63
2021 Q3	$4.73M	Hold	43,720	–	–	0.3%	85
2021 Q2	$4.73M	Hold	43,720	–	–	0.31%	91
2021 Q1	$4.74M	Sell	43,720 -43,720	-50%	-$4.79M	0.33%	87
2020 Q4	$9.63M	Buy	87,440 +43,720	+100%	+$4.81M	0.71%	49
2020 Q3	$4.83M	Buy	43,720 +6,785	+18%	+$750K	0.47%	68
2020 Q2	$4.09M	Buy	+36,935	New	+$4.09M	0.36%	79

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

Advisory Research's MBB Position: Q1 2026 in Review

Advisory Research held its iShares MBS ETF (MBB) position steady in Q1 2026 at 17,518 shares worth $1.66M. The position accounts for 0.2% of the portfolio, ranked #80.

Advisory Research first reported a position in MBB in Q2 2020 and has held it in 24 quarters since. The position peaked at $9.63M in Q4 2020. 1,019 funds tracked by Wall St. Rank hold MBB as of Q1 2026.

Advisory Research held 17,518 shares of iShares MBS ETF worth $1.66M as of Q1 2026.
Advisory Research left its iShares MBS ETF share count unchanged in Q1 2026.
iShares MBS ETF made up 0.2% of Advisory Research's portfolio in Q1 2026, its #80 holding.
Advisory Research first reported a position in iShares MBS ETF in Q2 2020 and has held it in 24 quarters since.
Advisory Research's iShares MBS ETF position peaked at $9.63M in Q4 2020.
1,019 funds tracked by Wall St. Rank held iShares MBS ETF as of Q1 2026.

Based on Advisory Research's 13F filing for Q1 2026, filed 14 May 2026.