TwinBeech Capital’s Rambus RMBS Stock Holding History

TwinBeech Capital’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	$1.9M	Buy	+14,307	New	+$1.86M	0.34%	94
2026 Q1	–	Sell	-2,600	Closed	-$239K	–	781
2025 Q4	$239K	Buy	+2,600	New	+$256K	0.02%	512
2024 Q4	–	Sell	-132,924	Closed	-$5.61M	–	880
2024 Q3	$5.61M	Buy	+132,924	New	+$6.44M	0.11%	225
2024 Q1	–	Sell	-252,625	Closed	-$17.2M	–	806
2023 Q4	$17.2M	Buy	252,625 +248,286	+5,722%	+$15.5M	0.28%	106
2023 Q3	$242K	Sell	4,339 -41,107	-90%	-$2.33M	﹤0.01%	590
2023 Q2	$2.92M	Buy	+45,446	New	+$2.5M	0.06%	340
2023 Q1	–	Sell	-145,173	Closed	-$5.2M	–	847
2022 Q4	$5.2M	Buy	+145,173	New	+$4.91M	0.1%	250

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

TwinBeech Capital's RMBS Position: Q2 2026 in Review

TwinBeech Capital opened a new position in Rambus (RMBS) in Q2 2026: 14,307 shares worth $1.9M. The stake represents 0.34% of the portfolio and ranks #94 among its holdings. This is a return to the name: TwinBeech Capital previously reported a position in RMBS as recently as Q4 2025.

TwinBeech Capital first reported a position in RMBS in Q4 2022 and has held it in 7 quarters since. The position peaked at $17.2M in Q4 2023. 617 funds tracked by Wall St. Rank hold RMBS as of Q2 2026.

TwinBeech Capital held 14,307 shares of Rambus worth $1.9M as of Q2 2026.
Rambus was a new TwinBeech Capital position in Q2 2026.
Rambus made up 0.34% of TwinBeech Capital's portfolio in Q2 2026, its #94 holding.
TwinBeech Capital first reported a position in Rambus in Q4 2022 and has held it in 7 quarters since.
TwinBeech Capital's Rambus position peaked at $17.2M in Q4 2023.
617 funds tracked by Wall St. Rank held Rambus as of Q2 2026.

Based on TwinBeech Capital's 13F filing for Q2 2026, filed 14 Aug 2026.