Rambus Inc (RMBS) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

109,947,727Shares Outstanding

805,954Shares held by institutions

$82,167,010Value of institutional holdings

80.60%Institutional ownership %

0.94%Shares Changed QoQ

517No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

The institutional landscape for Rambus Inc (NASDAQ:RMBS) includes 517 filers as of the latest reporting cycle ending December 2025.

The percentage of Rambus owned by institutions changed from 90.7% in September 2025 to 80.6% in December 2025, marking a slight down trend.
On a quarter-over-quarter basis, institutional holdings shifted by 0.94%, with a year-over-year an increase of 31.89% in the count of filers.
The latest 13F cycle for Rambus reveals that of 517 total investors, 273 funds grew their exposure, whereas 182 reduced theirs and 62 made no changes.
This class of investors increased its holdings in Rambus to 88.62Mn shares for the 13F-cycle ending December 2025, up by 824.88K shares quarter on quarter, and down 6.88Mn shares year over year.
The top institutional stake in Rambus as of December 31, 2025 belongs to BlackRock, Inc., which owns 16.28Mn shares, or 14.80% of the company.
Among the most significant buyers of Rambus during December 2025 were NORGES BANK (1.70Mn), DRIEHAUS CAPITAL MANAGEMENT LLC (954.16K), BlackRock, Inc. (466.49K), Fisher Asset Management, LLC (364.40K), PUBLIC SECTOR PENSION INVESTMENT BOARD (305.21K).
Leading sellers of Rambus stock in December 2025 included EdgePoint Investment Group Inc. (1.28Mn), T. Rowe Price Investment Management, Inc. (705.77K), Bank of New York Mellon Corp (504.18K), JPMORGAN CHASE & CO (491.50K), VANGUARD GROUP INC (410.84K).
The top 10 institutional holders of Rambus for the quarter ending December 2025 included BlackRock, Inc. (16.28Mn), VANGUARD GROUP INC (12.29Mn), STATE STREET CORP (4.25Mn), GEODE CAPITAL MANAGEMENT, LLC (2.84Mn), JPMORGAN CHASE & CO (2.07Mn), ALLIANCEBERNSTEIN L.P. (1.90Mn), DIMENSIONAL FUND ADVISORS LP (1.89Mn), NORGES BANK (1.70Mn), FMR LLC (1.59Mn), CONGRESS ASSET MANAGEMENT CO (1.41Mn).

517 Institutional Holders

805,954 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	16,275,186	466,493	2.95%	$1,495,526,797.00
VANGUARD GROUP INC	31 Dec, 2025	12,290,929	-410,844	-3.23%	$1,129,413,466.00
STATE STREET CORP	31 Dec, 2025	4,251,563	-138,422	-3.15%	$390,676,124.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	2,842,715	94,214	3.43%	$261,255,537.00
JPMORGAN CHASE & CO	31 Dec, 2025	2,065,343	-491,495	-19.22%	$189,784,395.00
ALLIANCEBERNSTEIN L.P.	31 Dec, 2025	1,900,308	78,278	4.30%	$174,619,302.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	1,893,528	-35,169	-1.82%	$174,012,021.00
NORGES BANK	31 Dec, 2025	1,701,551	1,701,551	0.00%	$156,355,521.00
FMR LLC	31 Dec, 2025	1,587,029	213,505	15.54%	$145,832,125.00
CONGRESS ASSET MANAGEMENT CO	31 Dec, 2025	1,410,615	63,430	4.71%	$129,621,412.00
EdgePoint Investment Group Inc.	31 Dec, 2025	1,406,686	-1,276,270	-47.57%	$129,260,377.00
Swedbank AB	31 Dec, 2025	1,363,000	-337,000	-19.82%	$125,246,070.00
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	31 Dec, 2025	1,327,693	-11,221	-0.84%	$122,001,710.00
NORTHERN TRUST CORP	31 Dec, 2025	1,315,551	-70,323	-5.07%	$120,885,981.00
Neuberger Berman Group LLC	31 Dec, 2025	1,305,951	-176,057	-11.88%	$120,147,476.00
BANK OF AMERICA CORP /DE/	31 Dec, 2025	1,249,642	-301,023	-19.41%	$114,829,604.00
GOLDMAN SACHS GROUP INC	31 Dec, 2025	1,194,391	7,258	0.61%	$109,752,560.00
Nuveen, LLC	31 Dec, 2025	1,102,090	-181,035	-14.11%	$101,271,050.00
Bank of New York Mellon Corp	31 Dec, 2025	1,094,156	-504,182	-31.54%	$100,542,005.00
BARCLAYS PLC	31 Dec, 2025	1,022,984	128,078	14.31%	$94,002,000.00

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