RAMBUS INC RMBS

US Technology Semiconductors & Related Devices
$112.92
-8.8%
52w: $59.38 – $170.66

Latest 13F among current holders filed 4 days ago (Jul 1, 2026)

Price — last 12 months

research preview data
59.38115.02170.66
Jun 20, 2025 Jul 2, 2026
Institutional holders
553
+0 QoQ
13F value
$8.82B
-3.9% QoQ
Smart-money holders
28
signal tier ≥ 2
New smart buyers
16
Q1 2026
Options barometer
1.8×
$39.6M calls / $22.3M puts

Institutional value by quarter

$7.07B
Q1 2024
$6.03B
Q2 2024
$4.11B
Q3 2024
$5.03B
Q4 2024
$5.12B
Q1 2025
$6.24B
Q2 2025
$10.56B
Q3 2025
$9.19B
Q4 2025
$8.82B
Q1 2026

Number of holders

376
Q1 2024
364
Q2 2024
378
Q3 2024
395
Q4 2024
415
Q1 2025
460
Q2 2025
512
Q3 2025
553
Q4 2025
553
Q1 2026

Who owns RMBS?

Q1 2026 filings
FundTypeSharesValue% of fundChange
BlackRock, Inc. Index provider16.3M$1.40B0.0%+0.2%
VANGUARD PORTFOLIO MANAGEMENT LLC Diversified mechanical6.6M$571.6M0.0%
Invesco Ltd. Index provider6.5M$559.1M0.1%+56.7%
VANGUARD CAPITAL MANAGEMENT LLC Diversified mechanical4.8M$415.3M0.0%
STATE STREET CORP Index provider4.4M$376.3M0.0%+2.9%
PRICE T ROWE ASSOCIATES INC /MD/ Diversified mechanical3.4M$290.5M0.0%-37.3%
FMR LLC Long only active3.3M$285.5M0.0%+109.1%
GEODE CAPITAL MANAGEMENT, LLC Index provider3.1M$268.8M0.0%+9.9%
T. Rowe Price Investment Management, Inc. Long only active2.4M$205.7M0.1%+236.2%
EdgePoint Investment Group Inc. ★3Fundamental concentrated1.9M$167.6M1.3%+38.5%
DIMENSIONAL FUND ADVISORS LP Quant stat arb1.8M$154.4M0.0%-5.2%
JPMORGAN CHASE & CO Bank broker1.8M$146.4M0.0%-11.1%
Swedbank AB Other1.6M$134.5M0.1%+14.7%
BANK OF AMERICA CORP /DE/ Bank broker1.4M$117.1M0.0%+9.0%
NORTHERN TRUST CORP Index provider1.3M$114.8M0.0%+1.4%
CHARLES SCHWAB INVESTMENT MANAGEMENT INC Index provider1.3M$114.1M0.0%-0.1%
NEUBERGER BERMAN GROUP LLC Diversified mechanical1.3M$111.7M0.1%-0.3%
CONGRESS ASSET MANAGEMENT CO Other1.3M$109.8M0.8%-9.5%
MORGAN STANLEY Bank broker1.2M$104.4M0.0%+37.1%
AQR CAPITAL MANAGEMENT LLC Quant stat arb1.3M$104.0M0.0%+75.8%
BARCLAYS PLC Bank broker1.1M$94.3M0.0%+7.1%
BESSEMER GROUP INC Diversified mechanical1.0M$89.5M0.1%+1009.5%
CITIGROUP INC Bank broker1.0M$86.7M0.1%+100.5%
AMERIPRISE FINANCIAL INC Bank broker975.2K$83.9M0.0%+72.1%
UBS Group AG Bank broker956.4K$82.3M0.0%+109.9%
GOLDMAN SACHS GROUP INC Bank broker922.1K$79.3M0.0%-22.8%
Nuveen, LLC Diversified mechanical892.3K$76.8M0.0%-19.0%
WELLINGTON MANAGEMENT GROUP LLP Long only active856.6K$73.7M0.0%-8.3%
Bank of New York Mellon Corp Diversified mechanical779.9K$67.1M0.0%-28.7%
VOYA INVESTMENT MANAGEMENT LLC Diversified mechanical765.8K$65.9M0.1%+5.7%
RAYMOND JAMES FINANCIAL INC Bank broker791.0K$65.5M0.0%-15.2%
VANGUARD FIDUCIARY TRUST CO Diversified mechanical749.9K$64.5M0.0%
Rafferty Asset Management, LLC Index provider745.5K$64.1M0.3%-20.3%
Fisher Asset Management, LLC Long only active738.4K$63.5M0.0%+42.7%
Hood River Capital Management LLC Other727.5K$62.6M0.6%+2.6%
PointState Capital LP ★2Fundamental concentrated701.3K$60.3M1.4%New
LOOMIS SAYLES & CO L P Other659.8K$56.8M0.1%-5.8%
Clearbridge Investments, LLC Other583.3K$50.2M0.0%New
OBERWEIS ASSET MANAGEMENT INC/ Other526.3K$45.3M1.3%+13.9%
EMERALD ADVISERS, LLC Other493.2K$42.4M1.3%-21.3%
Caisse de depot et placement du Quebec Other448.6K$38.6M0.1%+0.3%
PANAGORA ASSET MANAGEMENT INC Diversified mechanical436.4K$37.5M0.1%+0.4%
SCHWARTZ INVESTMENT COUNSEL INC Other420.3K$36.2M1.3%+133.1%
Stephens Investment Management Group LLC Other407.8K$35.1M0.5%+110.5%
LORD, ABBETT & CO. LLC Other387.1K$33.3M0.1%-28.2%
PRINCIPAL FINANCIAL GROUP INC Diversified mechanical373.5K$32.1M0.0%-9.3%
WESTWOOD HOLDINGS GROUP INC Other369.1K$31.8M0.2%+29.5%
JANUS HENDERSON GROUP PLC Diversified mechanical358.9K$30.9M0.0%-5.4%
Champlain Investment Partners, LLC Other357.2K$30.7M0.4%New
SEI INVESTMENTS CO Diversified mechanical339.9K$29.2M0.0%-12.1%

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