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Granahan Investment Management’s Rambus RMBS Stock Holding History

Granahan Investment 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 		$8.79M Sell
66,245
-214,001
-76% -$27.8M 0.31% 76
2026
Q1 		$24.1M Buy
280,246
+14,730
+6% +$1.47M 1.17% 22
2025
Q4 		$24.4M Buy
265,516
+27,073
+11% +$2.66M 1.04% 29
2025
Q3 		$24.8M Buy
238,443
+108,362
+83% +$8.35M 1.02% 32
2025
Q2 		$8.33M Buy
130,081
+1,399
+1% +$75K 0.34% 74
2025
Q1 		$6.66M Buy
128,682
+46,062
+56% +$2.71M 0.33% 80
2024
Q4 		$4.37M Sell
82,620
-24,306
-23% -$1.24M 0.18% 114
2024
Q3 		$4.51M Buy
106,926
+20,496
+24% +$993K 0.18% 136
2024
Q2 		$5.08M Buy
+86,430
New +$4.94M 0.2% 125

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 $3.37T AUM 44.26% 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

Granahan Investment Management's RMBS Position: Q2 2026 in Review

Granahan Investment Management reduced its Rambus (RMBS) stake by 76% in Q2 2026, selling an estimated $27.8M and leaving 66,245 shares worth $8.79M. The position accounts for 0.31% of the portfolio, ranked #76.

Granahan Investment Management first reported a position in RMBS in Q2 2024 and has held it in 9 quarters since. The position peaked at $24.8M in Q3 2025. 617 funds tracked by Wall St. Rank hold RMBS as of Q2 2026.

  • Granahan Investment Management held 66,245 shares of Rambus worth $8.79M as of Q2 2026.
  • Granahan Investment Management sold 214,001 Rambus shares in Q2 2026, an estimated $27.8M.
  • Rambus made up 0.31% of Granahan Investment Management's portfolio in Q2 2026, its #76 holding.
  • Granahan Investment Management first reported a position in Rambus in Q2 2024 and has held it in 9 quarters since.
  • Granahan Investment Management's Rambus position peaked at $24.8M in Q3 2025.
  • 617 funds tracked by Wall St. Rank held Rambus as of Q2 2026.

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