First Manhattan’s Rambus RMBS Stock Holding History

First Manhattan’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	$331K	Hold	2,495	–	–	﹤0.01%	643
2026 Q1	$215K	Hold	2,495	–	–	﹤0.01%	715
2025 Q4	$229K	Hold	2,495	–	–	﹤0.01%	682
2025 Q3	$260K	Buy	+2,495	New	+$192K	﹤0.01%	644
2016 Q4	–	Sell	-150	Closed	-$1K	–	1433
2016 Q3	$1K	Hold	150	–	–	﹤0.01%	1361
2016 Q2	$1K	Hold	150	–	–	﹤0.01%	1423
2016 Q1	$2K	Hold	150	–	–	﹤0.01%	1332
2015 Q4	$1K	Hold	150	–	–	﹤0.01%	1378
2015 Q3	$1K	Hold	150	–	–	﹤0.01%	1393
2015 Q2	$2K	Buy	+150	New	+$2.14K	﹤0.01%	1375

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

First Manhattan's RMBS Position: Q2 2026 in Review

First Manhattan held its Rambus (RMBS) position steady in Q2 2026 at 2,495 shares worth $331K. The position accounts for ﹤0.01% of the portfolio, ranked #643.

First Manhattan first reported a position in RMBS in Q2 2015 and has held it in 10 quarters since. 618 funds tracked by Wall St. Rank hold RMBS as of Q2 2026.

First Manhattan held 2,495 shares of Rambus worth $331K as of Q2 2026.
First Manhattan left its Rambus share count unchanged in Q2 2026.
Rambus made up ﹤0.01% of First Manhattan's portfolio in Q2 2026, its #643 holding.
First Manhattan first reported a position in Rambus in Q2 2015 and has held it in 10 quarters since.
618 funds tracked by Wall St. Rank held Rambus as of Q2 2026.

Based on First Manhattan's 13F filing for Q2 2026, filed 14 Aug 2026.