RAMBUS INC - Common Stock (RMBS) Institutional Ownership

13F Institutional Holders and Ownership History from Q1 2014 to Q4 2025

Type / Class
Equity / Common Stock
Symbol
RMBS on Nasdaq
Shares outstanding
107,573,086
Price per share
$91.89
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
98,738,419
Total reported value
$10,288,834,065
% of total 13F portfolios
0.01%
Share change
+1,686,311
Value change
+$325,756,479
Number of holders
507
Price from insider filings
$91.89
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of RAMBUS INC - Common Stock (RMBS) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
BlackRock, Inc. 14% $1,383,886,224 15,060,232 BlackRock, Inc. 31 Dec 2025
PRICE T ROWE ASSOCIATES INC /MD/ 4.4% -46% $346,231,380 -$299,024,187 4,693,390 -46% T. Rowe Price Associates, Inc. 30 Jun 2025

As of 30 Sep 2025, 507 institutional investors reported holding 98,738,419 shares of RAMBUS INC - Common Stock (RMBS). This represents 92% of the company’s total 107,573,086 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of RAMBUS INC - Common Stock (RMBS) together control 66% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
BlackRock, Inc. 15% 15,808,693 +5.4% 0.03% $1,647,265,810
VANGUARD GROUP INC 12% 12,701,773 +1.1% 0.02% $1,323,524,746
PRICE T ROWE ASSOCIATES INC /MD/ 4.9% 5,245,344 +12% 0.06% $546,566,000
STATE STREET CORP 4.1% 4,389,985 -2.6% 0.02% $457,436,437
GEODE CAPITAL MANAGEMENT, LLC 2.6% 2,748,501 +2.3% 0.02% $286,431,558
EdgePoint Investment Group Inc. 2.5% 2,682,956 -3.7% 2.1% $279,564,015
JPMORGAN CHASE & CO 2.4% 2,556,838 -20% 0.02% $266,422,589
Invesco Ltd. 2.3% 2,432,032 +4.7% 0.04% $253,417,735
DIMENSIONAL FUND ADVISORS LP 1.8% 1,928,697 +0.57% 0.04% $200,965,633
ALLIANCEBERNSTEIN L.P. 1.7% 1,822,030 +573% 0.06% $189,855,526
Swedbank AB 1.6% 1,700,000 0% 0.18% $177,140,000
Bank of New York Mellon Corp 1.5% 1,598,338 -21% 0.03% $166,546,738
BANK OF AMERICA CORP /DE/ 1.4% 1,550,665 +196% 0.01% $161,579,292
NEUBERGER BERMAN GROUP LLC 1.4% 1,482,008 +9.9% 0.11% $154,412,561
NORTHERN TRUST CORP 1.3% 1,385,874 -0.56% 0.02% $144,408,071
FMR LLC 1.3% 1,373,524 +306% 0.01% $143,121,219
CONGRESS ASSET MANAGEMENT CO 1.3% 1,347,185 +5.5% 0.93% $140,376,677
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 1.2% 1,338,914 +4% 0.02% $139,514,839
Nuveen, LLC 1.2% 1,283,125 +13% 0.04% $133,701,626
RAYMOND JAMES FINANCIAL INC 1.1% 1,190,320 -13% 0.04% $124,031,341
GOLDMAN SACHS GROUP INC 1.1% 1,187,133 +80% 0.02% $123,699,227
MORGAN STANLEY 0.99% 1,065,804 -8.4% 0.01% $111,056,976
Rafferty Asset Management, LLC 0.84% 901,750 0.3% $93,962,350
BARCLAYS PLC 0.83% 894,906 +183% 0.03% $93,249,205
Hood River Capital Management LLC 0.78% 838,440 -12% 1% $87,365,448

Institutional Holders of RAMBUS INC - Common Stock (RMBS) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 2,658,574 $248,896,702 +$4,487,661 $91.89 68
2025 Q3 98,738,419 $10,288,834,065 +$325,756,479 $104.20 507
2025 Q2 97,175,861 $6,221,679,375 +$55,185,088 $64.02 455
2025 Q1 96,287,256 $4,986,584,426 +$67,247,681 $51.78 405
2024 Q4 94,946,841 $5,019,314,669 +$202,589,909 $52.86 386
2024 Q3 90,937,050 $3,840,654,288 -$209,698,817 $42.22 368
2024 Q2 96,073,358 $5,642,754,112 +$3,443,957 $58.76 363
2024 Q1 95,507,417 $5,892,342,748 -$67,827,747 $61.81 372
2023 Q4 3,871,330 $264,245,395 -$2,817,849 $68.25 3
2023 Q3 96,293,576 $5,372,792,939 +$93,276,958 $55.79 340
2023 Q2 93,562,994 $6,003,256,925 +$44,021,639 $64.17 378
2023 Q1 93,464,189 $4,790,252,290 +$128,740,031 $51.26 327
2022 Q4 91,145,126 $3,265,400,264 -$58,738,818 $35.82 294
2022 Q3 93,389,071 $2,374,787,907 -$56,236,132 $25.42 228
2022 Q2 95,987,486 $2,056,273,046 +$38,237,550 $21.49 239
2022 Q1 93,011,127 $2,962,393,858 -$60,371,566 $31.89 259
2021 Q4 91,718,081 $2,694,538,734 +$83,188,552 $29.39 245
2021 Q3 93,437,490 $2,073,430,938 -$68,698,107 $22.20 231
2021 Q2 97,063,305 $2,300,633,115 +$38,470,928 $23.71 215
2021 Q1 95,752,754 $1,861,234,562 +$3,097,785 $19.44 207
2020 Q4 95,918,504 $1,675,383,341 +$39,619,436 $17.46 210
2020 Q3 95,116,512 $1,302,176,717 -$10,570,340 $13.69 181
2020 Q2 95,336,132 $1,448,875,318 +$21,756,730 $15.20 192
2020 Q1 94,011,121 $1,043,680,420 -$5,966,216 $11.10 169
2019 Q4 94,302,932 $1,299,260,288 +$46,026,081 $13.78 168
2019 Q3 90,663,352 $1,190,018,700 +$26,334,476 $13.12 186
2019 Q2 88,888,295 $1,070,525,820 +$60,936,141 $12.04 167
2019 Q1 87,567,575 $915,168,877 +$42,193,875 $10.45 165
2018 Q4 84,217,917 $645,948,921 -$14,740,737 $7.67 174
2018 Q3 85,838,353 $936,303,634 -$30,268,579 $10.91 166
2018 Q2 88,552,223 $1,110,513,551 +$6,889,454 $12.54 159
2018 Q1 88,264,431 $1,185,426,943 -$7,610,040 $13.43 175
2017 Q4 89,771,066 $1,276,519,945 +$55,631,814 $14.22 160
2017 Q3 86,291,966 $1,152,155,580 +$16,083,771 $13.35 160
2017 Q2 85,195,368 $973,936,440 -$52,536,015 $11.43 154
2017 Q1 89,047,219 $1,170,030,149 +$175,932,915 $13.14 149
2016 Q4 88,057,463 $1,212,394,438 +$15,063,117 $13.77 165
2016 Q3 87,090,877 $1,087,964,888 +$39,312,450 $12.50 165
2016 Q2 84,183,590 $1,017,265,208 -$37,868,906 $12.08 159
2016 Q1 85,442,351 $1,174,692,498 -$26,858,826 $13.75 154
2015 Q4 87,331,598 $1,012,222,487 +$10,953,961 $11.59 141
2015 Q3 86,935,879 $1,025,707,343 +$16,791,011 $11.80 140
2015 Q2 83,605,458 $1,211,399,841 +$73,027,198 $14.49 120
2015 Q1 79,889,222 $1,004,385,069 +$23,781,095 $12.58 122
2014 Q4 78,175,845 $867,022,693 -$2,162,252 $11.09 138
2014 Q3 78,023,891 $973,135,974 +$32,464,360 $12.48 133
2014 Q2 75,252,829 $1,076,108,790 +$107,136,619 $14.30 134
2014 Q1 71,129,521 $764,781,988 +$50,285,457 $10.75 118