Ken Fisher
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Ken Fisher’s Rambus RMBS Stock Holding History

Ken Fisher’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 		$63.5M Buy
738,356
+221,078
+43% +$22.1M 0.02% 205
2025
Q4 		$47.5M Buy
517,278
+364,396
+238% +$35.9M 0.02% 241
2025
Q3 		$15.9M Buy
+152,882
New +$11.8M 0.01% 355

Other funds holding RMBS

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
T. Rowe Price Investment Management
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

Ken Fisher's RMBS Position: Q1 2026 in Review

Ken Fisher increased its Rambus (RMBS) stake by 43% in Q1 2026, buying an estimated $22.1M and bringing the position to 738,356 shares worth $63.5M. The position accounts for 0.02% of the portfolio, ranked #205.

Ken Fisher first reported a position in RMBS in Q3 2025 and has held it in 3 quarters since. 554 funds tracked by Wall St. Rank hold RMBS as of Q1 2026.

  • Ken Fisher held 738,356 shares of Rambus worth $63.5M as of Q1 2026.
  • Ken Fisher bought 221,078 Rambus shares in Q1 2026, an estimated $22.1M.
  • Rambus made up 0.02% of Ken Fisher's portfolio in Q1 2026, its #205 holding.
  • Ken Fisher first reported a position in Rambus in Q3 2025 and has held it in 3 quarters since.
  • 554 funds tracked by Wall St. Rank held Rambus as of Q1 2026.

Based on Fisher Asset Management's 13F filing for Q1 2026, filed 5 May 2026.