PCM
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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
2026
Q2 		$460K Buy
+3,469
New +$451K 0.06% 418
2025
Q4 		– Sell
-5,374
Closed -$560K – 962
2025
Q3 		$560K Buy
+5,374
New +$414K 0.06% 404

Other funds holding RMBS

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Polymer Capital Management's RMBS Position: Q2 2026 in Review

Polymer Capital Management opened a new position in Rambus (RMBS) in Q2 2026: 3,469 shares worth $460K. The stake represents 0.06% of the portfolio and ranks #418 among its holdings. This is a return to the name: Polymer Capital Management previously reported a position in RMBS as recently as Q3 2025.

Polymer Capital Management first reported a position in RMBS in Q3 2025 and has held it in 2 quarters since. The position peaked at $560K in Q3 2025. 620 funds tracked by Wall St. Rank hold RMBS as of Q2 2026.

  • Polymer Capital Management held 3,469 shares of Rambus worth $460K as of Q2 2026.
  • Rambus was a new Polymer Capital Management position in Q2 2026.
  • Rambus made up 0.06% of Polymer Capital Management's portfolio in Q2 2026, its #418 holding.
  • Polymer Capital Management first reported a position in Rambus in Q3 2025 and has held it in 2 quarters since.
  • Polymer Capital Management's Rambus position peaked at $560K in Q3 2025.
  • 620 funds tracked by Wall St. Rank held Rambus as of Q2 2026.

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