O'Shaughnessy Asset Management’s Rambus RMBS Stock Holding History

O'Shaughnessy Asset Management’s Portfolio RMBS Stock Details RMBS Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$767K	Buy	5,779 +946	+20%	+$123K	﹤0.01%	1394
2026 Q1	$416K	Sell	4,833 -3,767	-44%	-$376K	﹤0.01%	1621
2025 Q4	$790K	Buy	8,600 +3,258	+61%	+$321K	﹤0.01%	1261
2025 Q3	$557K	Buy	5,342 +2,008	+60%	+$155K	﹤0.01%	1425
2025 Q2	$213K	Buy	+3,334	New	+$179K	﹤0.01%	1805
2024 Q3	–	Sell	-4,281	Closed	-$252K	–	2176
2024 Q2	$252K	Sell	4,281 -135	-3%	-$7.72K	﹤0.01%	1448
2024 Q1	$273K	Sell	4,416 -1,298	-23%	-$82.1K	﹤0.01%	1360
2023 Q4	$390K	Sell	5,714 -1,510	-21%	-$94.1K	0.01%	1113
2023 Q3	$403K	Buy	7,224 +1,649	+30%	+$93.6K	0.01%	1003
2023 Q2	$358K	Buy	5,575 +292	+6%	+$16.1K	0.01%	991
2023 Q1	$271K	Buy	+5,283	New	+$227K	﹤0.01%	1094
2021 Q4	–	Sell	-159	Closed	-$4K	–	2224
2021 Q3	$4K	Hold	159	–	–	﹤0.01%	2385
2021 Q2	$4K	Hold	159	–	–	﹤0.01%	2200
2021 Q1	$3K	Hold	159	–	–	﹤0.01%	2026
2020 Q4	$3K	Hold	159	–	–	﹤0.01%	1797
2020 Q3	$2K	Hold	159	–	–	﹤0.01%	1661
2020 Q2	$2K	Buy	+159	New	+$2.24K	﹤0.01%	1517
2020 Q1	–	Sell	-501	Closed	-$7K	–	1722
2019 Q4	$7K	Buy	+501	New	+$6.72K	﹤0.01%	1385

Other funds holding RMBS

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

O'Shaughnessy Asset Management's RMBS Position: Q2 2026 in Review

O'Shaughnessy Asset Management increased its Rambus (RMBS) stake by 20% in Q2 2026, buying an estimated $123K and bringing the position to 5,779 shares worth $767K. The position accounts for ﹤0.01% of the portfolio, ranked #1394.

O'Shaughnessy Asset Management first reported a position in RMBS in Q4 2019 and has held it in 18 quarters since. The position peaked at $790K in Q4 2025. 617 funds tracked by Wall St. Rank hold RMBS as of Q2 2026.

O'Shaughnessy Asset Management held 5,779 shares of Rambus worth $767K as of Q2 2026.
O'Shaughnessy Asset Management bought 946 Rambus shares in Q2 2026, an estimated $123K.
Rambus made up ﹤0.01% of O'Shaughnessy Asset Management's portfolio in Q2 2026, its #1394 holding.
O'Shaughnessy Asset Management first reported a position in Rambus in Q4 2019 and has held it in 18 quarters since.
O'Shaughnessy Asset Management's Rambus position peaked at $790K in Q4 2025.
617 funds tracked by Wall St. Rank held Rambus as of Q2 2026.

Based on O'Shaughnessy Asset Management's 13F filing for Q2 2026, filed 13 Aug 2026.