RMBSRambus Inc.

$90.03

Who owns RMBS

538 institutions reported holding RMBS for 2026Q1, together 93% of the company, fewer than the 540 a quarter earlier.

538

Institutions reporting a position · as of 2026Q1 · down from 540 the quarter before

Shares held by institutions
102.4M

Shares held by institutions · 93% of the company · long US equity positions only, as reported on Form 13F

Reported value
$8.79B

Reported value · at 2026-03-31 prices, not today's

Top 5 holders
39%

Top 5 holders · of the whole company, between five filers

Details
Reporting quarter2026-03-31
2026Q1
Quarters on record
52
New positions
75
Positions exited
80
Added to
166
Reduced
189
Top 10 holdersof the company
51%
Institutional ownership by quarter, 2013Q2 to 2026Q1
QuarterFilersSharesReported value
2026Q1538102.4M$8.79B
2025Q454099.4M$9.14B
2025Q350398.3M$10.2B
2025Q244696.9M$6.20B
2025Q140596.5M$5.05B
2024Q438594.9M$5.02B
2024Q337192.8M$3.93B
2024Q236195.9M$5.63B
2024Q137197.2M$5.99B
2023Q439496.9M$6.61B
2023Q334497.9M$5.46B
2023Q238695.7M$6.14B
2023Q133293.7M$4.79B
2022Q429991.6M$3.27B
2022Q323793.4M$2.37B
2022Q224695.7M$2.06B
Largest reported holders, 2026Q1
HolderShares% of companyValue
BlackRock Inc.16.3M15%$1.40B
VANGUARD GROUP INC12.4M11%$1.07B
Invesco Ltd.6.5M5.9%$559M
STATE STREET CORP4.4M4.0%$376M
PRICE T ROWE ASSOCIATES INC /MD/3.4M3.1%$290M
FMR LLC3.3M3.0%$285M
GEODE CAPITAL MANAGEMENT LLC3.1M2.8%$269M
T. Rowe Price Investment Management, Inc.2.4M2.2%$206M
EdgePoint Investment Group Inc.1.9M1.8%$168M
JPMORGAN CHASE & CO1.8M1.7%$146M

SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold.

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