Harbor Capital Advisors’s iShares MBS ETF MBB Stock Holding History

Harbor Capital Advisors’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	$139K	Sell	1,467 -3,032	-67%	-$290K	0.01%	617
2025 Q4	$428K	Buy	4,499 +2,792	+164%	+$266K	0.03%	529
2025 Q3	$162K	Buy	1,707 +426	+33%	+$40K	0.01%	616
2025 Q2	$120K	Buy	1,281 +92	+8%	+$8.53K	0.01%	636
2025 Q1	$112K	Buy	+1,189	New	+$110K	0.01%	650
2024 Q3	–	Sell	-608	Closed	-$56K	–	1352
2024 Q2	$56K	Sell	608 -949	-61%	-$86.4K	﹤0.01%	717
2024 Q1	$144K	Sell	1,557 -173	-10%	-$16K	0.02%	679
2023 Q4	$163K	Buy	+1,730	New	+$155K	0.03%	380

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

Harbor Capital Advisors's MBB Position: Q1 2026 in Review

Harbor Capital Advisors reduced its iShares MBS ETF (MBB) stake by 67% in Q1 2026, selling an estimated $290K and leaving 1,467 shares worth $139K. The position accounts for 0.01% of the portfolio, ranked #617.

Harbor Capital Advisors first reported a position in MBB in Q4 2023 and has held it in 8 quarters since. The position peaked at $428K in Q4 2025. 1,019 funds tracked by Wall St. Rank hold MBB as of Q1 2026.

Harbor Capital Advisors held 1,467 shares of iShares MBS ETF worth $139K as of Q1 2026.
Harbor Capital Advisors sold 3,032 iShares MBS ETF shares in Q1 2026, an estimated $290K.
iShares MBS ETF made up 0.01% of Harbor Capital Advisors's portfolio in Q1 2026, its #617 holding.
Harbor Capital Advisors first reported a position in iShares MBS ETF in Q4 2023 and has held it in 8 quarters since.
Harbor Capital Advisors's iShares MBS ETF position peaked at $428K in Q4 2025.
1,019 funds tracked by Wall St. Rank held iShares MBS ETF as of Q1 2026.

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