Renaissance Technologies’s iShares MBS ETF MBB Stock Holding History

Renaissance Technologies’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	$8.88M	Buy	93,988 +65,988	+236%	+$6.24M	0.01%	1125
2026 Q1	$2.66M	Buy	28,000 +19,614	+234%	+$1.87M	﹤0.01%	1727
2025 Q4	$799K	Buy	+8,386	New	+$800K	﹤0.01%	2379
2023 Q1	–	Sell	-43,900	Closed	-$4.07M	–	4237
2022 Q4	$4.07M	Buy	+43,900	New	+$4.05M	0.01%	1641
2022 Q3	–	Sell	-161,000	Closed	-$15.7M	–	4268
2022 Q2	$15.7M	Buy	+161,000	New	+$15.8M	0.02%	858
2021 Q3	–	Sell	-15,014	Closed	-$1.63M	–	3691
2021 Q2	$1.63M	Buy	+15,014	New	+$1.63M	﹤0.01%	2393
2021 Q1	–	Sell	-163,805	Closed	-$18M	–	3548
2020 Q4	$18M	Buy	163,805 +42,705	+35%	+$4.7M	0.02%	812
2020 Q3	$13.4M	Buy	121,100 +62,000	+105%	+$6.86M	0.01%	964
2020 Q2	$6.54M	Buy	59,100 +21,100	+56%	+$2.34M	0.01%	1474
2020 Q1	$4.2M	Sell	38,000 -71,845	-65%	-$7.82M	﹤0.01%	1674
2019 Q4	$11.9M	Buy	109,845 +37,517	+52%	+$4.05M	0.01%	1336
2019 Q3	$7.83M	Sell	72,328 -20,272	-22%	-$2.19M	0.01%	1542
2019 Q2	$9.96M	Buy	+92,600	New	+$9.85M	0.01%	1418
2018 Q3	–	Sell	-9,800	Closed	-$1.02M	–	3472
2018 Q2	$1.02M	Sell	9,800 -11,468	-54%	-$1.19M	﹤0.01%	2590
2018 Q1	$2.23M	Buy	+21,268	New	+$2.23M	﹤0.01%	2270

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

Renaissance Technologies's MBB Position: Q2 2026 in Review

Renaissance Technologies increased its iShares MBS ETF (MBB) stake by 236% in Q2 2026, buying an estimated $6.24M and bringing the position to 93,988 shares worth $8.88M. The position accounts for 0.01% of the portfolio, ranked #1125.

Renaissance Technologies first reported a position in MBB in Q1 2018 and has held it in 15 quarters since. The position peaked at $18M in Q4 2020. 1,022 funds tracked by Wall St. Rank hold MBB as of Q2 2026.

Renaissance Technologies held 93,988 shares of iShares MBS ETF worth $8.88M as of Q2 2026.
Renaissance Technologies bought 65,988 iShares MBS ETF shares in Q2 2026, an estimated $6.24M.
iShares MBS ETF made up 0.01% of Renaissance Technologies's portfolio in Q2 2026, its #1125 holding.
Renaissance Technologies first reported a position in iShares MBS ETF in Q1 2018 and has held it in 15 quarters since.
Renaissance Technologies's iShares MBS ETF position peaked at $18M in Q4 2020.
1,022 funds tracked by Wall St. Rank held iShares MBS ETF as of Q2 2026.

Based on Renaissance Technologies's 13F filing for Q2 2026, filed 13 Aug 2026.