Rambus Inc (RMBS) Institutional Ownership

Institutions by Trading Activity

109,304,000Shares Outstanding

97,061,262Shares held by institutions

$12,661,641,628Value of institutional holdings

88.80%Institutional ownership %

0.48%Shares Changed QoQ

539No. of institutional investors

Rambus Inc (NASDAQ:RMBS) showed up in the 13F filings of 539 institutional investors as of December 2025.

These investors collectively held 87.7% of Rambus's outstanding shares in December 2025, down from 94.7% in September 2025.
Their total shares held in RMBS increased 0.36% quarter over quarter, and separately, investors owning Rambus increased 38.21% from a year ago.
During the quarter, 285 of these 539 funds increased positions in RMBS, 189 reduced exposure, and 65 held steady.
Altogether, these fund groups held 95.83Mn shares in RMBS by December 2025, up by 342.62K shares quarter on quarter, and down 4.81Mn shares year over year.
As of December 31, 2025, the biggest holder of Rambus is Byrne Asset Management LLC at 1.24K shares, representing 0.0% of shares outstanding.
The biggest buyers of Rambus for the quarter ending December 2025 included Byrne Asset Management LLC (1.24K).
The largest sales of RMBS for the quarter ending December 2025 came from MJT & Associates Financial Advisory Group, Inc. (74).
Rambus's 2 largest shareholders as of December 2025 include Byrne Asset Management LLC (1.24K), MJT & Associates Financial Advisory Group, Inc. (74) per Business Quant data.

97,061,262 Total Shares Held

Rows:

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
Invesco Ltd.	31 Dec, 2025	4,148,653	1,716,621	70.58%	$381,219,724.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	2,842,715	94,214	3.43%	$261,255,537.00
Swedbank AB	31 Dec, 2025	2,726,000	1,026,000	60.35%	$250,492,140.00
Goldman Sachs Group Inc	31 Dec, 2025	2,388,782	1,201,649	101.22%	$219,505,120.00
Jpmorgan Chase & Co	31 Dec, 2025	2,065,343	-3,048,333	-59.61%	$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
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	-1,851,688	-59.71%	$114,829,604.00
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

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