UBS Group’s Rambus RMBS Stock Holding History

UBS Group’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	$1.42M	Buy	+16,482	New	+$1.64M	﹤0.01%	5270
2024 Q1	–	Sell	-98,500	Closed	-$6.72M	–	9911
2023 Q4	$6.72M	Buy	+98,500	New	+$6.14M	﹤0.01%	2453
2017 Q1	–	Sell	-50,000	Closed	-$689K	–	7914
2016 Q4	$689K	Hold	50,000	–	–	﹤0.01%	3872
2016 Q3	$625K	Hold	50,000	–	–	﹤0.01%	3761
2016 Q2	$604K	Hold	50,000	–	–	﹤0.01%	3758
2016 Q1	$688K	Sell	50,000 -700	-1%	-$8.68K	﹤0.01%	3538
2015 Q4	$588K	Hold	50,700	–	–	﹤0.01%	3814
2015 Q3	$598K	Hold	50,700	–	–	﹤0.01%	3749
2015 Q2	$735K	Buy	50,700 +50,000	+7,143%	+$715K	﹤0.01%	3808
2015 Q1	$9K	Sell	700 -18,700	-96%	-$220K	﹤0.01%	7725
2014 Q4	$215K	Buy	+19,400	New	+$220K	﹤0.01%	4983

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

UBS Group's RMBS Position: Q1 2026 in Review

UBS Group increased its Rambus (RMBS) stake by 110% in Q1 2026, buying an estimated $50M and bringing the position to 956,387 shares worth $82.3M. The position accounts for 0.01% of the portfolio, ranked #1202.

UBS Group first reported a position in RMBS in Q4 2014 and has held it in 46 quarters since. 554 funds tracked by Wall St. Rank hold RMBS as of Q1 2026.

UBS Group held 956,387 shares of Rambus worth $82.3M as of Q1 2026.
UBS Group bought 500,717 Rambus shares in Q1 2026, an estimated $50M.
Rambus made up 0.01% of UBS Group's portfolio in Q1 2026, its #1202 holding.
UBS Group first reported a position in Rambus in Q4 2014 and has held it in 46 quarters since.
554 funds tracked by Wall St. Rank held Rambus as of Q1 2026.

Based on UBS Group's 13F filing for Q1 2026, filed 5 May 2026.