Security record · archived quarter
RMBS
Rambus Inc. · Technology · Semiconductors
137Tracked holders
-4Δ holders
75.08MShares held
$6.44BReported value
+5New positions
−10Exits
Momentum inputs (comparable managers):
holder breadth -2.8% ·
share flow +2.2% ·
net new positions -3.6%
· formula
Concentrated accumulation: rising shares among fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2026
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 3 | 0 | 186.25K | $16.07M | n/a | −1 |
| Q2 2026 | 139 | +6 | 78.25M | $10.35B | +12 | −7 |
| Q1 2026 | 137 | -4 | 75.08M | $6.44B | +5 | −10 |
| Q4 2025 | 140 | 0 | 82.50M | $7.59B | +2 | −1 |
| Q3 2025 | 21 | +3 | 52.09M | $5.43B | +3 | −1 |
| Q2 2025 | 16 | 0 | 44.72M | $2.86B | +1 | −1 |
| Q1 2025 | 13 | -3 | 20.22M | $1.05B | n/a | −3 |
| Q4 2024 | 16 | +1 | 18.03M | $953.00M | +1 | n/a |
| Q3 2024 | 14 | +2 | 9.95M | $420.01M | +2 | n/a |
| Q2 2024 | 12 | n/a | 12.20M | $716.28M | n/a | n/a |
Who holds it · Q1 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 16.31M | +0.2% | $1.40B | 0.0% | ▲ Add | 4 | SEC ↗ ×18 |
| 2 | Invesco Ltd. | 6.50M | +56.6% | $559.11M | 0.1% | ▲ Add | 2 | SEC ↗ ×13 |
| 3 | Vanguard Capital Management Llc | 4.83M | n/a | $415.34M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | State Street Global Advisors ✦ (passive) | 4.37M | +2.9% | $376.26M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 5 | T. Rowe Price ✦ | 3.38M | -37.3% | $290.50M | 0.0% | ▼ Trim | 8 | SEC ↗ ×2 |
| 6 | Fidelity (FMR) ✦ | 3.32M | +109.1% | $285.49M | 0.0% | ▲ Add | 4 | SEC ↗ ×6 |
| 7 | Geode Capital Management ✦ (passive) | 3.12M | +9.9% | $268.84M | 0.0% | ▲ Add | 8 | SEC ↗ ×2 |
| 8 | Dimensional Fund Advisors Lp | 1.80M | -5.2% | $154.42M | 0.0% | ▼ Trim | 2 | SEC ↗ ×5 |
| 9 | JPMorgan Chase ✦ | 1.84M | -11.1% | $146.42M | 0.0% | ▼ Trim | 3 | SEC ↗ ×6 |
| 10 | Swedbank AB | 1.56M | +14.7% | $134.46M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 11 | Bank Of America Corp /De/ | 1.36M | +9.0% | $117.14M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 12 | Northern Trust Corp | 1.33M | +1.4% | $114.77M | 0.0% | ▲ Add | 2 | SEC ↗ ×7 |
| 13 | Charles Schwab Investment… | 1.33M | -0.1% | $114.11M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 14 | Neuberger Berman Group LLC | 1.30M | -0.3% | $111.72M | 0.1% | ▼ Trim | 2 | SEC ↗ ×2 |
| 15 | Morgan Stanley ✦ | 1.21M | +37.1% | $104.37M | 0.0% | ▲ Add | 3 | SEC ↗ ×15 |
| 16 | AQR Capital Management ✦ | 1.25M | +75.8% | $103.96M | 0.0% | ▲ Add | 8 | SEC ↗ ×8 |
| 17 | Barclays Plc | 1.10M | +7.1% | $94.26M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 18 | Citigroup Inc | 1.01M | +100.5% | $86.68M | 0.1% | ▲ Add | 2 | SEC ↗ ×3 |
| 19 | Ameriprise Financial Inc | 975.21K | +72.1% | $83.90M | 0.0% | ▲ Add | 2 | SEC ↗ ×6 |
| 20 | UBS Group AG | 956.39K | +109.9% | $82.28M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 21 | Goldman Sachs Group ✦ | 922.11K | -22.8% | $79.33M | 0.0% | ▼ Trim | 3 | SEC ↗ ×3 |
| 22 | Nuveen, LLC | 892.34K | -19.0% | $76.77M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 23 | Wellington Management ✦ | 856.60K | -8.3% | $73.69M | 0.0% | ▼ Trim | 8 | SEC ↗ ×4 |
| 24 | Bank of New York Mellon Corp | 779.88K | -28.7% | $67.09M | 0.0% | ▼ Trim | 2 | SEC ↗ ×16 |
| 25 | Voya Investment Management Llc | 765.78K | +5.7% | $65.88M | 0.1% | ▲ Add | 2 | SEC ↗ ×3 |
| 26 | Raymond James Financial Inc | 790.98K | -15.2% | $65.47M | 0.0% | ▼ Trim | 2 | SEC ↗ ×7 |
| 27 | Fisher Asset Management ✦ | 738.36K | +42.7% | $63.52M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 28 | Loomis Sayles & Co L P | 659.84K | -5.8% | $56.77M | 0.1% | ▼ Trim | 2 | SEC ↗ ×2 |
| 29 | Clearbridge Investments, LLC | 583.27K | New | $50.18M | 0.0% | New | 1 | SEC ↗ |
| 30 | Caisse De Depot Et Placement Du… | 448.60K | +0.3% | $38.59M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 31 | Principal Financial Group Inc | 373.54K | -9.3% | $32.14M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 32 | Janus Henderson Group Plc | 358.89K | -5.4% | $30.87M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 33 | Sei Investments Co | 339.93K | -12.1% | $29.24M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 34 | Nomura Asset Management… | 326.94K | +50.8% | $28.13M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 35 | Franklin Resources Inc | 323.36K | -33.4% | $27.82M | 0.0% | ▼ Trim | 2 | SEC ↗ ×10 |
| 36 | Rhumbline Advisers | 319.58K | +1.6% | $27.49M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 37 | First Trust Advisors Lp | 307.24K | +2.4% | $26.43M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 38 | Alliancebernstein L.P. | 267.19K | -85.9% | $24.55M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 39 | Bnp Paribas Financial Markets | 264.40K | +7.3% | $22.75M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 40 | UBS AM, a distinct business unit of… | 240.61K | -1.5% | $20.70M | 0.0% | ▼ Trim | 2 | SEC ↗ ×9 |
| 41 | California Public Employees… | 227.27K | +15.8% | $19.55M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 42 | Federated Hermes, Inc. | 215.40K | +66.5% | $18.53M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 43 | Swiss National Bank | 213.00K | +0.4% | $18.32M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 44 | Osaic Holdings, Inc. | 199.73K | -8.0% | $17.18M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 45 | Canada Pension Plan Investment Board | 199.45K | -57.3% | $17.16M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 46 | Victory Capital Management Inc | 183.00K | +173.2% | $15.74M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 47 | HighTower Advisors, LLC | 181.60K | +15.3% | $15.62M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 48 | Legal & General Group Plc | 158.70K | -10.6% | $13.65M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 49 | Wcm Investment Management, Llc | 165.02K | -4.3% | $13.16M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 50 | Assetmark, Inc | 147.55K | +33.2% | $12.69M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 51 | Millennium Management ✦ | 141.31K | -46.2% | $12.16M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 52 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 141.09K | -6.0% | $12.14M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 53 | Man Group plc | 139.13K | -14.6% | $11.97M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 54 | Mirae Asset Global Investments Co.… | 134.27K | -14.6% | $11.55M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 55 | Russell Investments Group, Ltd. | 129.89K | -8.8% | $11.17M | 0.0% | ▼ Trim | 2 | SEC ↗ ×5 |
| 56 | Tidal Investments LLC | 125.31K | +194.8% | $10.78M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 57 | Wells Fargo & Company/Mn | 124.89K | -42.4% | $10.74M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 58 | California State Teachers… | 124.19K | +22.9% | $10.68M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 59 | Td Asset Management Inc | 120.28K | +401.0% | $10.35M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 60 | Deutsche Bank Ag\ | 108.31K | +11.4% | $9.32M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 61 | Nordea Investment Management Ab | 108.06K | -10.7% | $8.86M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 62 | Manufacturers Life Insurance… | 102.40K | -10.2% | $8.81M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 63 | Creative Planning | 102.32K | +12.1% | $8.80M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 64 | Lazard Asset Management Llc | 101.70K | -65.9% | $8.75M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 65 | Schroder Investment Management Group | 108.59K | n/a | $8.66M | 0.0% | n/c | 1 | SEC ↗ ×4 |
| 66 | Rockefeller Capital Management L.P. | 95.45K | +3456.3% | $8.21M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 67 | State Of Wisconsin Investment Board | 95.37K | -5.9% | $8.20M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 68 | Envestnet Asset Management Inc | 90.67K | +30.7% | $7.80M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 69 | Prudential Financial Inc | 89.40K | -58.2% | $7.69M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 70 | Allianz Asset Management GmbH | 89.11K | New | $7.67M | 0.0% | New | 1 | SEC ↗ ×2 |
| 71 | LPL Financial LLC | 87.96K | +4.1% | $7.57M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 72 | Susquehanna International Group, Llp | 85.82K | +520.4% | $7.38M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 73 | Two Sigma Investments ✦ | 77.41K | -46.4% | $6.66M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 74 | Allspring Global Investments… | 66.53K | -87.3% | $5.98M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 75 | Universal- Beteiligungs- und… | 66.04K | -52.0% | $5.68M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 76 | Mackenzie Financial Corp | 53.69K | +122.3% | $4.62M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 77 | Bridgewater Associates ✦ | 51.85K | -66.4% | $4.46M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 78 | Captrust Financial Advisors | 51.80K | +26.7% | $4.46M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 79 | BNP Paribas Asset Management… | 50.27K | -13.0% | $4.32M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 80 | Holocene Advisors, LP | 49.60K | New | $4.27M | 0.0% | New | 1 | SEC ↗ |
| 81 | Assenagon Asset Management S.A. | 47.53K | +2.5% | $4.09M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 82 | PRIMECAP Management ✦ | 47.50K | 0.0% | $4.09M | 0.0% | Held | 8 | SEC ↗ |
| 83 | American Century Companies Inc | 45.49K | -22.0% | $3.91M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 84 | Zurcher Kantonalbank (Zurich… | 44.87K | +21.9% | $3.86M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 85 | Pictet Asset Management Holding SA | 43.58K | +7.0% | $3.75M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 86 | New York State Common Retirement… | 42.94K | +2.4% | $3.69M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 87 | Pacer Advisors, Inc. | 37.00K | +80.8% | $3.18M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 88 | ProShare Advisors LLC | 29.84K | -21.0% | $2.57M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 89 | Royal Bank Of Canada | 29.54K | -13.1% | $2.54M | 0.0% | ▼ Trim | 2 | SEC ↗ ×6 |
| 90 | Cetera Investment Advisers | 28.69K | +1.1% | $2.47M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 91 | Ensign Peak Advisors, Inc | 27.48K | -3.4% | $2.36M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 92 | Fifth Third Bancorp | 27.36K | +1675.5% | $2.35M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 93 | State Board Of Administration Of… | 26.58K | 0.0% | $2.29M | 0.0% | Held | 2 | SEC ↗ |
| 94 | Stifel Financial Corp | 25.94K | -12.0% | $2.23M | 0.0% | ▼ Trim | 2 | SEC ↗ ×4 |
| 95 | Cerity Partners LLC | 25.69K | -15.7% | $2.21M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 96 | Quantinno Capital Management LP | 25.62K | +9.5% | $2.20M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 97 | Us Bancorp \De\ | 24.25K | +14.7% | $2.09M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 98 | Baird Financial Group, Inc. | 24.09K | -37.3% | $2.07M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 99 | Mariner, LLC | 19.27K | -0.4% | $1.66M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 100 | Bank Of Montreal /Can/ | 17.85K | +50.1% | $1.54M | 0.0% | ▲ Add | 2 | SEC ↗ ×6 |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Clearbridge Investments, LLC | $50.18M | 0.0% |
| Allianz Asset Management GmbH | $7.67M | 0.0% |
| Holocene Advisors, LP | $4.27M | 0.0% |
Exited
| Norges Bank | $156.36M | was 0.0% |
| Tudor Investment Corp Et Al | $9.34M | was 0.1% |
| Peak6 Llc | $3.24M | was 0.0% |
| Point72 Asset Management | $2.76M | was 0.0% |
| Credit Agricole S A | $1.39M | was 0.0% |
| Qube Research & Technologies… | $518,995 | was 0.0% |
| Squarepoint Ops LLC | $505,027 | was 0.0% |
| Simplex Trading, Llc | $356,900 | was 0.0% |
| Focus Partners Wealth | $269,055 | was 0.0% |
| Toronto Dominion Bank | $134 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 549 holders, 100.74M shares, $7.93B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Sep 22
KISSNER CHARLES
Director · 5.00K sh · $525,000
Aug 07
KISSNER CHARLES
Director · 5.00K sh · $504,600
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Jul 29
SC 13G/A: BlackRock, Inc.
Jun 05
SC 13G: FMR LLC
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q1 2026 ·
Methodology ·
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