Company · Ownership research

RAMBUS INC RMBS

CIK 0000917273 · CUSIP 750917106

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 750917106 (RMBS), not CUSIP 750917956 (RMBS), CUSIP 750917906 (RMBS), CUSIP 84860W102 (RMBS), and does not merge CUSIPs.

This page lists the top 20 of 513 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	BlackRock, Inc. CIK 2012383 · View history	$1.65B 15,808,693 shares	0.03%	+808.61K(+5.40%)Added	SEC filing ↗ Nov 12, 2025	▾
02	VANGUARD GROUP INC CIK 102909 · View history	$1.32B 12,701,773 shares	0.02%	+140.95K(+1.10%)Added	SEC filing ↗ Nov 7, 2025	▾
03	PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history	$546.57M 5,245,344 shares	0.06%	+551.95K(+11.80%)Added	SEC filing ↗ Nov 14, 2025	▾
04	STATE STREET CORP CIK 93751 · View history	$457.44M 4,389,985 shares	0.02%	-119.01K(-2.60%)Reduced	SEC filing ↗ Nov 14, 2025	▾
05	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$286.43M 2,748,501 shares	0.02%	+60.81K(+2.30%)Added	SEC filing ↗ Nov 12, 2025	▾
06	EdgePoint Investment Group Inc. CIK 1481669 · View history	$279.56M 2,682,956 shares	2.09%	-104.37K(-3.70%)Reduced	SEC filing ↗ Nov 14, 2025	▾
07	JPMORGAN CHASE & CO CIK 19617 · Amended · View history	$266.42M 2,556,838 shares	0.02%	-623.54K(-19.60%)Reduced	SEC filing ↗ Nov 26, 2025	▾
08	Invesco Ltd. CIK 914208 · View history	$253.42M 2,432,032 shares	0.04%	+109.91K(+4.70%)Added	SEC filing ↗ Nov 13, 2025	▾
09	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$200.97M 1,928,697 shares	0.04%	+11.02K(+0.60%)Added	SEC filing ↗ Nov 12, 2025	▾
10	ALLIANCEBERNSTEIN L.P. CIK 1109448 · View history	$189.86M 1,822,030 shares	0.06%	+1.55M(+572.70%)Added	SEC filing ↗ Nov 14, 2025	▾
11	Swedbank AB CIK 946431 · View history	$177.14M 1,700,000 shares	0.18%	0(0.00%)Unchanged	SEC filing ↗ Oct 15, 2025	▾
12	Bank of New York Mellon Corp CIK 1390777 · View history	$166.55M 1,598,338 shares	0.03%	-421.17K(-20.90%)Reduced	SEC filing ↗ Nov 3, 2025	▾
13	BANK OF AMERICA CORP /DE/ CIK 70858 · Amended · View history	$161.58M 1,550,665 shares	0.01%	+1.03M(+196.00%)Added	SEC filing ↗ Feb 3, 2026	▾
14	NEUBERGER BERMAN GROUP LLC CIK 1465109 · View history	$154.41M 1,482,008 shares	0.11%	+133.97K(+9.90%)Added	SEC filing ↗ Nov 12, 2025	▾
15	NORTHERN TRUST CORP CIK 73124 · View history	$144.41M 1,385,874 shares	0.02%	-7.81K(-0.60%)Reduced	SEC filing ↗ Nov 14, 2025	▾
16	FMR LLC CIK 315066 · View history	$143.12M 1,373,524 shares	0.01%	+1.04M(+306.10%)Added	SEC filing ↗ Nov 13, 2025	▾
17	CONGRESS ASSET MANAGEMENT CO /MA CIK 897378 · View history	$140.38M 1,347,185 shares	0.93%	+70.26K(+5.50%)Added	SEC filing ↗ Oct 10, 2025	▾
18	CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history	$139.51M 1,338,914 shares	0.02%	+51.88K(+4.00%)Added	SEC filing ↗ Nov 10, 2025	▾
19	Nuveen, LLC CIK 1871926 · View history	$133.70M 1,283,125 shares	0.04%	+147.46K(+13.00%)Added	SEC filing ↗ Nov 12, 2025	▾
20	RAYMOND JAMES FINANCIAL INC CIK 720005 · View history	$124.03M 1,190,320 shares	0.04%	-181.79K(-13.20%)Reduced	SEC filing ↗ Nov 14, 2025	▾

Showing 20 / 513 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

513

Cancelled or null records excluded

Disclosed shares

98,754,873

Not deduplicated across managers

Disclosed value

$10.29B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

RAMBUS INC · Q3 2025

Explore all 513 reporting institutions.

This page includes 20 of 513 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

Download CSV
Earlier quarters
Advanced screening & filtering
API & AI access

Already have an account?

＋ New accounts get free API credits to explore data beyond ownership filings.

For AI agents & developers

The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 513 reporting institutions; totals use the complete disclosed data.

Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.

MCP  https://api.akkrudata.ai/mcp

akkru_institutional_holdings
{"action":"holders","cusip":"750917106","quarter":"2025Q3","type":"positions","page_size":100}

Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.

MCP endpoint: https://api.akkrudata.ai/mcp
API / MCP / CLI documentation: /documents
llms.txt: /llms.txt

Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.