RAMBUS INC hedge fund holdings
RMBSNASDAQ$110.30-1.67 (-1.49% today)
Every quarter, large institutional investment managers with over $100M in U.S.-listed assets under management disclose their U.S. equity holdings through 13F filings. Read together, those filings show which businesses professional capital is moving into and out of.
Price vs funds buying and selling
RMBS · close · 13FReported Aug 14, 2026Price vs funds buying and selling data
Showing the 1Y range: Oct 6, 2025 to Oct 5, 2026. Price (+9.2%). 0 fund reports plotted in this window as 0 markers; nearby trades of the same kind are grouped.
| Date | Category | Person | Role | Action | Amount | Change in holding |
|---|
Funds buying · new + increased
Funds selling · reduced + closed
Net buyers vs sellers
Buying = new + increased; selling = reduced + closed. Counts exclude position changes under 5% of the fund's holding last quarter.Price and fund activity data
| Quarter | Funds buying | Funds selling | Bought | Sold | Filers | Reported |
|---|---|---|---|---|---|---|
| Q2 2025 | 194 | 123 | $661M | $789M | 426 | Aug 14, 2025 |
| Q3 2025 | 211 | 162 | $1.52B | $1.08B | 476 | Nov 14, 2025 |
| Q4 2025 | 193 | 157 | $757M | $1.03B | 522 | Feb 14, 2026 |
| Q1 2026 | 188 | 203 | $1.31B | $934M | 526 | May 15, 2026 |
| Q2 2026 | 239 | 222 | $2.02B | $2.53B | 580 | Aug 14, 2026 |
Quarterly action breakdown
Q2 2026
580 filersNew position
114$254M+1.91M sh
Increased
125$1.76B+13.3M sh
Reduced
166-$2.01B-15.2M sh
Out / sold
56-$521M-3.93M sh
Last 4 quarters · free
Reported Aug 14, 2026
| Fund | Action | Change in dollar | Value | % of portfolio | Reported |
|---|---|---|---|---|---|
| T. Rowe Price Investment Management, Inc. | Sell 100% | -$206M | $0 | 0.00% | Aug 14, 2026 |
| EdgePoint Investment Group Inc. | Reduce 44.23% | -$114M | $144M | 1.09% | Aug 14, 2026 |
| Congress Asset Management Co | Reduce 39.03% | -$66.1M | $103M | 0.64% | Jul 7, 2026 |
| Hood River Capital Management LLC | Sell 100% | -$62.6M | $0 | 0.00% | Aug 14, 2026 |
| Wellington Management Group LLP | Reduce 51.14% | -$58.1M | $55.6M | 0.01% | Aug 14, 2026 |
| Westfield Capital Management Co LP | Added 2572.56% | +$49.3M | $51.2M | 0.17% | Aug 12, 2026 |
| Maple Rock Capital Partners Inc. | New Buy | +$45.5M | $45.5M | 0.89% | Aug 14, 2026 |
| Schwartz Investment Counsel Inc | Reduce 76.21% | -$42.5M | $13.3M | 0.44% | Jul 27, 2026 |
| Gilder Gagnon Howe & Co LLC | New Buy | +$34.2M | $34.2M | 0.35% | Aug 14, 2026 |
| Emerald Advisers, LLC | Reduce 48.77% | -$31.9M | $33.5M | 0.79% | Aug 5, 2026 |
| Rafferty Asset Management, LLC | Added 32.04% | +$31.7M | $131M | 0.30% | Aug 14, 2026 |
| Lord, Abbett & Co. LLC | Reduce 59.12% | -$30.4M | $21M | 0.06% | Aug 14, 2026 |
| William Blair Investment Management, LLC | New Buy | +$26.6M | $26.6M | 0.08% | Aug 12, 2026 |
| Loomis Sayles & Co L P | Reduce 28.63% | -$25.1M | $62.5M | 0.08% | Aug 14, 2026 |
| Duquesne Family Office LLC | New Buy | +$23M | $23M | 0.44% | Aug 14, 2026 |
| ArrowMark Colorado Holdings LLC | Reduce 65.80% | -$22.9M | $11.9M | 0.49% | Aug 13, 2026 |
| Emerald Mutual Fund Advisers Trust | Reduce 54.67% | -$22.3M | $18.5M | 0.65% | Aug 5, 2026 |
| Caisse de depot et placement du Quebec | Reduce 37.01% | -$22M | $37.5M | 0.05% | Aug 14, 2026 |
| Canada Pension Plan Investment Board | Added 65.78% | +$17.4M | $43.9M | 0.02% | Aug 14, 2026 |
| Westwood Holdings Group Inc | Reduce 29.55% | -$14.5M | $34.5M | 0.26% | Aug 14, 2026 |
| Steadfast Capital Management LP | Sell 100% | -$13.2M | $0 | 0.00% | Aug 14, 2026 |
| Schroder Investment Management Group | Reduce 97.79% | -$13.2M | $297K | 0.00% | Aug 13, 2026 |
| Catalyst Funds Management Pty Ltd | New Buy | +$11.8M | $11.8M | 0.66% | Aug 10, 2026 |
| Swedbank AB | Added 5.34% | +$11.1M | $219M | 0.19% | Jul 15, 2026 |
| Bessemer Group Inc | Reduce 7.79% | -$10.7M | $127M | 0.18% | Aug 12, 2026 |
| Axiom Investors LLC | Reduce 54.26% | -$10M | $8.45M | 0.07% | Aug 12, 2026 |
| PointState Capital LP | Added 8.96% | +$8.34M | $101M | 1.30% | Aug 14, 2026 |
| Alight Capital Management LP | Reduce 60.00% | -$7.96M | $5.31M | 0.75% | Aug 14, 2026 |
| Champlain Investment Partners, LLC | Reduce 16.20% | -$7.68M | $39.7M | 1.02% | Aug 12, 2026 |
| Tidal Investments LLC | Added 44.31% | +$7.37M | $24M | 0.04% | Aug 13, 2026 |
| Osterweis Capital Management Inc | Sell 100% | -$7.31M | $0 | 0.00% | Aug 14, 2026 |
| Nomura Asset Management International Inc. | Reduce 16.81% | -$7.29M | $36.1M | 0.05% | Aug 14, 2026 |
| SummitTX Capital, L.P. | Reduce 64.20% | -$6.87M | $3.83M | 0.10% | Aug 14, 2026 |
| First Trust Advisors LP | Reduce 15.93% | -$6.5M | $34.3M | 0.02% | Aug 11, 2026 |
| Bridgewater Associates, LP | Reduce 92.53% | -$6.37M | $514K | 0.00% | Aug 14, 2026 |
| Ranger Investment Management, L.P. | Reduce 21.25% | -$6.33M | $23.5M | 1.48% | Aug 13, 2026 |
| Renaissance Group LLC | Reduce 44.33% | -$6.23M | $7.82M | 0.32% | Aug 13, 2026 |
| Treasurer of the State of North Carolina | New Buy | +$6.08M | $6.08M | 0.02% | Aug 14, 2026 |
| Fred Alger Management, LLC | Sell 100% | -$5.75M | $0 | 0.00% | Aug 14, 2026 |
| Shannon River Fund Management LLC | Reduce 12.61% | -$5.59M | $38.7M | 3.46% | Aug 13, 2026 |
| Munro Partners | Sell 100% | -$5.54M | $0 | 0.00% | Aug 10, 2026 |
| Susquehanna Portfolio Strategies, LLC | Added 126.71% | +$5.14M | $9.2M | 0.15% | Aug 14, 2026 |
| Thornburg Investment Management Inc | Sell 100% | -$5M | $0 | 0.00% | Aug 13, 2026 |
| Handelsbanken Fonder AB | Added 28.07% | +$4.39M | $20M | 0.06% | Jul 10, 2026 |
| Fisher Asset Management, LLC | Reduce 4.40% | -$4.32M | $93.7M | 0.03% | Aug 4, 2026 |
| Thrivent Financial for Lutherans | Reduce 19.91% | -$4.28M | $17.2M | 0.03% | Aug 14, 2026 |
| Holocene Advisors, LP | Sell 100% | -$4.27M | $0 | 0.00% | Aug 14, 2026 |
| AI-Squared Management Ltd | Sell 100% | -$4.27M | $0 | 0.00% | Aug 12, 2026 |
| WCM Investment Management, LLC | Reduce 20.62% | -$4.22M | $16.2M | 0.03% | Aug 13, 2026 |
| Daventry Group, LP | New Buy | +$4.05M | $4.05M | 3.06% | Aug 14, 2026 |
| Driehaus Capital Management LLC | Reduce 16.72% | -$3.86M | $19.2M | 0.11% | Aug 14, 2026 |
| Diversified Trust Co | Reduce 72.74% | -$3.85M | $1.44M | 0.02% | Jul 17, 2026 |
| Assetmark, Inc | Reduce 18.76% | -$3.67M | $15.9M | 0.03% | Jul 30, 2026 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | Reduce 50.82% | -$3.39M | $3.28M | 0.00% | Aug 13, 2026 |
| Aubrey Capital Management Ltd | New Buy | +$3.22M | $3.22M | 2.02% | Jul 28, 2026 |
| Moody Aldrich Partners LLC | Sell 100% | -$3.21M | $0 | 0.00% | Jul 15, 2026 |
| FORA Capital, LLC | Added 152.28% | +$3.06M | $5.07M | 0.35% | Aug 13, 2026 |
| Van Eck Associates Corp | Added 15.66% | +$3.02M | $22.3M | 0.01% | Aug 14, 2026 |
| Pacer Advisors, Inc. | Reduce 58.47% | -$2.87M | $2.04M | 0.01% | Aug 13, 2026 |
| Ensign Peak Advisors, Inc | Reduce 72.77% | -$2.65M | $993K | 0.00% | Aug 14, 2026 |
| South Dakota Investment Council | Sell 100% | -$2.46M | $0 | 0.00% | Aug 11, 2026 |
| Diversify Advisory Services, LLC | Added 494.27% | +$2.4M | $2.89M | 0.05% | Aug 10, 2026 |
| Guggenheim Capital LLC | Reduce 41.28% | -$2.34M | $3.33M | 0.02% | Aug 12, 2026 |
| Leonteq Securities AG | Added 241.43% | +$2.16M | $3.06M | 0.11% | Jul 27, 2026 |
| Aster Capital Management (DIFC) Ltd | New Buy | +$2.11M | $2.11M | 0.45% | Aug 14, 2026 |
| Element Squared LLC | Sell 100% | -$2.03M | $0 | 0.00% | Jul 28, 2026 |
| Capstone Capital Management Ltd | Sell 100% | -$2.01M | $0 | 0.00% | Jul 20, 2026 |
| Hussman Strategic Advisors, Inc. | New Buy | +$1.95M | $1.95M | 0.45% | Aug 3, 2026 |
| Susquehanna Fundamental Investments, LLC | New Buy | +$1.94M | $1.94M | 0.04% | Aug 14, 2026 |
| Teachers Retirement System of the State of Kentucky | Reduce 29.67% | -$1.93M | $4.59M | 0.03% | Aug 12, 2026 |
| Worldquant Millennium Advisors LLC | New Buy | +$1.87M | $1.87M | 0.01% | Aug 14, 2026 |
| Moody National Bank Trust Division | Reduce 86.72% | -$1.86M | $285K | 0.02% | Jul 7, 2026 |
| Elo Mutual Pension Insurance Co | Reduce 54.50% | -$1.86M | $1.55M | 0.02% | Aug 13, 2026 |
| Deepwater Asset Management, LLC | Reduce 23.09% | -$1.78M | $5.92M | 2.69% | Aug 6, 2026 |
| Pictet Asset Management Holding SA | Reduce 30.25% | -$1.75M | $4.04M | 0.00% | Jul 30, 2026 |
| Natixis Advisors, LLC | Added 39.38% | +$1.6M | $5.66M | 0.01% | Aug 14, 2026 |
| Sphera Management Technology Funds Ltd | New Buy | +$1.59M | $1.59M | 0.55% | Aug 14, 2026 |
| Nissay Asset Management Corp /Japan | Added 42.75% | +$1.5M | $5M | 0.02% | Aug 14, 2026 |
| Cookson Peirce & Co Inc | Sell 100% | -$1.49M | $0 | 0.00% | Jul 23, 2026 |
| Kornitzer Capital Management Inc | New Buy | +$1.46M | $1.46M | 0.03% | Jul 31, 2026 |
| Curi Capital, LLC | New Buy | +$1.43M | $1.43M | 0.02% | Aug 14, 2026 |
| Homestead Advisers Corp | Added 82.31% | +$1.42M | $3.15M | 0.08% | Aug 13, 2026 |
| Weiss Asset Management LP | Added 16.93% | +$1.42M | $9.79M | 0.10% | Aug 14, 2026 |
| Defiance ETFs, LLC | Added 99.16% | +$1.4M | $2.82M | 0.04% | Aug 14, 2026 |
| CWA Asset Management Group, LLC | Added 41.84% | +$1.33M | $4.51M | 0.14% | Jul 14, 2026 |
| Sona Asset Management (Us) LLC | New Buy | +$1.33M | $1.33M | 0.03% | Aug 14, 2026 |
| Arrowpoint Investment Partners (Singapore) Pte. Ltd. | New Buy | +$1.27M | $1.27M | 0.28% | Aug 13, 2026 |
| Retirement Systems of Alabama | Added 7.10% | +$1.24M | $18.8M | 0.06% | Jul 28, 2026 |
| Wesbanco Bank Inc | Sell 100% | -$1.23M | $0 | 0.00% | Jul 28, 2026 |
| Redhawk Wealth Advisors, Inc. | New Buy | +$1.23M | $1.23M | 0.12% | Jul 9, 2026 |
| Investors Towarzystwo Funduszy Inwestycyjnych Spolka Akcyjna | Reduce 35.21% | -$1.2M | $2.21M | 0.74% | Jul 21, 2026 |
| Jefferies Financial Group Inc. | New Buy | +$1.19M | $1.19M | 0.01% | Aug 17, 2026 |
| Maverick Capital Ltd | Reduce 66.93% | -$1.16M | $572K | 0.01% | Aug 14, 2026 |
| Linden Thomas Advisory Services, LLC | Reduce 32.95% | -$1.15M | $2.33M | 0.19% | Jul 16, 2026 |
| Xponance LLC | Added 50.24% | +$1.02M | $3.06M | 0.02% | Aug 10, 2026 |
| Sunstone Asset Management, LP | Sell 100% | -$1.01M | $0 | 0.00% | Aug 14, 2026 |
| IMC-Chicago, LLC | New Buy | +$946K | $946K | 0.00% | Aug 6, 2026 |
| Aurora Investment Counsel | Sell 100% | -$936K | $0 | 0.00% | Aug 10, 2026 |
| VANGUARD ASSET MANAGEMENT, Ltd | Added 6.54% | +$843K | $13.7M | 0.01% | Aug 13, 2026 |
| Scotia Capital Inc. | New Buy | +$841K | $841K | 0.00% | Aug 11, 2026 |