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 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 $5.72T AUM 30.48% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return

EIG

EdgePoint Investment Group Toronto, Ontario, Canada $12.5B AUM 31.7% 1-Year Est. Return

First Manhattan's RMBS Position: Q1 2026 in Review

First Manhattan held its Rambus (RMBS) position steady in Q1 2026 at 2,495 shares worth $215K. The position accounts for ﹤0.01% of the portfolio, ranked #715.

First Manhattan first reported a position in RMBS in Q2 2015 and has held it in 9 quarters since. The position peaked at $260K in Q3 2025. 553 funds tracked by Wall St. Rank hold RMBS as of Q1 2026.

First Manhattan held 2,495 shares of Rambus worth $215K as of Q1 2026.
First Manhattan left its Rambus share count unchanged in Q1 2026.
Rambus made up ﹤0.01% of First Manhattan's portfolio in Q1 2026, its #715 holding.
First Manhattan first reported a position in Rambus in Q2 2015 and has held it in 9 quarters since.
First Manhattan's Rambus position peaked at $260K in Q3 2025.
553 funds tracked by Wall St. Rank held Rambus as of Q1 2026.

Based on First Manhattan's 13F filing for Q1 2026, filed 15 May 2026.