Polymer Capital Management’s Rambus RMBS Stock Holding History

Polymer Capital 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
2025 Q4	–	Sell	-5,374	Closed	-$560K	–	962
2025 Q3	$560K	Buy	+5,374	New	+$414K	0.06%	404

Other funds holding RMBS

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

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

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

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

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

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

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

AllianceBernstein Nashville, Tennessee $309B AUM 23.92% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Norges Bank Oslo, Norway $935B AUM

Polymer Capital Management's RMBS Position: Q4 2025 in Review

Polymer Capital Management sold out of Rambus (RMBS) in Q4 2025, closing a stake of 5,374 shares — an estimated $560K sold.

Polymer Capital Management first reported a position in RMBS in Q3 2025 and held it in 1 quarter. The position peaked at $560K in Q3 2025. 552 funds tracked by Wall St. Rank hold RMBS as of Q4 2025.

Polymer Capital Management reported no remaining Rambus position as of Q4 2025 after selling out during the quarter.
Polymer Capital Management sold 5,374 Rambus shares in Q4 2025, an estimated $560K.
Polymer Capital Management first reported a position in Rambus in Q3 2025 and held it in 1 quarter.
Polymer Capital Management's Rambus position peaked at $560K in Q3 2025.
552 funds tracked by Wall St. Rank held Rambus as of Q4 2025.

Based on Polymer Capital Management's 13F filing for Q4 2025, filed 17 Feb 2026.