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Driehaus Capital Management’s Rambus RMBS Stock Holding History

Driehaus 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
Q1 		$15M Sell
173,953
-780,211
-82% -$77.9M 0.11% 235
2025
Q4 		$87.7M Buy
+954,164
New +$93.9M 0.6% 42
2024
Q1 		– Sell
-772,842
Closed -$52.7M – 439
2023
Q4 		$52.7M Buy
772,842
+163,851
+27% +$10.2M 0.64% 34
2023
Q3 		$34M Buy
608,991
+1,368
+0.2% +$77.6K 0.44% 62
2023
Q2 		$39M Buy
607,623
+36,179
+6% +$1.99M 0.49% 52
2023
Q1 		$29.3M Buy
571,444
+191,808
+51% +$8.24M 0.41% 63
2022
Q4 		$13.6M Buy
+379,636
New +$12.8M 0.2% 159
2022
Q2 		– Sell
-771,153
Closed -$24.6M – 424
2022
Q1 		$24.6M Buy
+771,153
New +$21.3M 0.3% 115

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

Driehaus Capital Management's RMBS Position: Q1 2026 in Review

Driehaus Capital Management reduced its Rambus (RMBS) stake by 82% in Q1 2026, selling an estimated $77.9M and leaving 173,953 shares worth $15M. The position accounts for 0.11% of the portfolio, ranked #235.

Driehaus Capital Management first reported a position in RMBS in Q1 2022 and has held it in 8 quarters since. The position peaked at $87.7M in Q4 2025. 553 funds tracked by Wall St. Rank hold RMBS as of Q1 2026.

  • Driehaus Capital Management held 173,953 shares of Rambus worth $15M as of Q1 2026.
  • Driehaus Capital Management sold 780,211 Rambus shares in Q1 2026, an estimated $77.9M.
  • Rambus made up 0.11% of Driehaus Capital Management's portfolio in Q1 2026, its #235 holding.
  • Driehaus Capital Management first reported a position in Rambus in Q1 2022 and has held it in 8 quarters since.
  • Driehaus Capital Management's Rambus position peaked at $87.7M in Q4 2025.
  • 553 funds tracked by Wall St. Rank held Rambus as of Q1 2026.

Based on Driehaus Capital Management's 13F filing for Q1 2026, filed 15 May 2026.