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 |
|---|---|---|---|---|---|---|
| Q2 2026 | 141 | +6 | 78.39M | $10.36B | +12 | −5 |
| 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 | — | −3 |
| Q4 2024 | 16 | +1 | 18.03M | $953.00M | +1 | — |
| Q3 2024 | 14 | +2 | 9.95M | $420.01M | +2 | — |
| Q2 2024 | 12 | — | 12.20M | $716.28M | — | — |
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 ↗ |
| 2 | BlackRock ✦ (passive) | 16.31M | +0.2% | $1.40B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 16.31M | +0.2% | $1.40B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 16.31M | +0.2% | $1.40B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 16.31M | +0.2% | $1.40B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 16.31M | +0.2% | $1.40B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 16.31M | +0.2% | $1.40B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 16.31M | +0.2% | $1.40B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 16.31M | +0.2% | $1.40B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 16.31M | +0.2% | $1.40B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 16.31M | +0.2% | $1.40B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 16.31M | +0.2% | $1.40B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 16.31M | +0.2% | $1.40B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 16.31M | +0.2% | $1.40B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 16.31M | +0.2% | $1.40B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 16.31M | +0.2% | $1.40B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 17 | BlackRock ✦ (passive) | 16.31M | +0.2% | $1.40B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 18 | BlackRock ✦ (passive) | 16.31M | +0.2% | $1.40B | 0.0% | ▲ Add | 4 | SEC ↗ |
| 19 | Invesco Ltd. | 6.50M | +56.6% | $559.11M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 20 | Invesco Ltd. | 6.50M | +56.6% | $559.11M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 21 | Invesco Ltd. | 6.50M | +56.6% | $559.11M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 22 | Invesco Ltd. | 6.50M | +56.6% | $559.11M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 23 | Invesco Ltd. | 6.50M | +56.6% | $559.11M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 24 | Invesco Ltd. | 6.50M | +56.6% | $559.11M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 25 | Invesco Ltd. | 6.50M | +56.6% | $559.11M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 26 | Invesco Ltd. | 6.50M | +56.6% | $559.11M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 27 | Invesco Ltd. | 6.50M | +56.6% | $559.11M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 28 | Invesco Ltd. | 6.50M | +56.6% | $559.11M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 29 | Invesco Ltd. | 6.50M | +56.6% | $559.11M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 30 | Invesco Ltd. | 6.50M | +56.6% | $559.11M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 31 | Invesco Ltd. | 6.50M | +56.6% | $559.11M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 32 | Vanguard Capital Management Llc | 4.83M | — | $415.34M | 0.0% | n/c | 1 | SEC ↗ |
| 33 | State Street Global Advisors ✦ (passive) | 4.37M | +2.9% | $376.26M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 34 | T. Rowe Price ✦ | 3.38M | -37.3% | $290.50M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 35 | T. Rowe Price ✦ | 3.38M | -37.3% | $290.50M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 36 | Fidelity (FMR) ✦ | 3.32M | +109.1% | $285.49M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 37 | Fidelity (FMR) ✦ | 3.32M | +109.1% | $285.49M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 38 | Fidelity (FMR) ✦ | 3.32M | +109.1% | $285.49M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 39 | Fidelity (FMR) ✦ | 3.32M | +109.1% | $285.49M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 40 | Fidelity (FMR) ✦ | 3.32M | +109.1% | $285.49M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 41 | Fidelity (FMR) ✦ | 3.32M | +109.1% | $285.49M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 42 | Geode Capital Management ✦ (passive) | 3.12M | +9.9% | $268.84M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 43 | Geode Capital Management ✦ (passive) | 3.12M | +9.9% | $268.84M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 44 | Dimensional Fund Advisors Lp | 1.80M | -5.2% | $154.42M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 45 | Dimensional Fund Advisors Lp | 1.80M | -5.2% | $154.42M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 46 | Dimensional Fund Advisors Lp | 1.80M | -5.2% | $154.42M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 47 | Dimensional Fund Advisors Lp | 1.80M | -5.2% | $154.42M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 48 | Dimensional Fund Advisors Lp | 1.80M | -5.2% | $154.42M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 49 | JPMorgan Chase ✦ | 1.84M | -11.1% | $146.42M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 50 | JPMorgan Chase ✦ | 1.84M | -11.1% | $146.42M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 51 | JPMorgan Chase ✦ | 1.84M | -11.1% | $146.42M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 52 | JPMorgan Chase ✦ | 1.84M | -11.1% | $146.42M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 53 | JPMorgan Chase ✦ | 1.84M | -11.1% | $146.42M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 54 | JPMorgan Chase ✦ | 1.84M | -11.1% | $146.42M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 55 | Swedbank AB | 1.56M | +14.7% | $134.46M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 56 | Bank Of America Corp /De/ | 1.36M | +9.0% | $117.14M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 57 | Bank Of America Corp /De/ | 1.36M | +9.0% | $117.14M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 58 | Bank Of America Corp /De/ | 1.36M | +9.0% | $117.14M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 59 | Bank Of America Corp /De/ | 1.36M | +9.0% | $117.14M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 60 | Bank Of America Corp /De/ | 1.36M | +9.0% | $117.14M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 61 | Northern Trust Corp | 1.33M | +1.4% | $114.77M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 62 | Northern Trust Corp | 1.33M | +1.4% | $114.77M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 63 | Northern Trust Corp | 1.33M | +1.4% | $114.77M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 64 | Northern Trust Corp | 1.33M | +1.4% | $114.77M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 65 | Northern Trust Corp | 1.33M | +1.4% | $114.77M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 66 | Northern Trust Corp | 1.33M | +1.4% | $114.77M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 67 | Northern Trust Corp | 1.33M | +1.4% | $114.77M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 68 | Charles Schwab Investment… | 1.33M | -0.1% | $114.11M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 69 | Neuberger Berman Group LLC | 1.30M | -0.3% | $111.72M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 70 | Neuberger Berman Group LLC | 1.30M | -0.3% | $111.72M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 71 | Morgan Stanley ✦ | 1.21M | +37.1% | $104.37M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 72 | Morgan Stanley ✦ | 1.21M | +37.1% | $104.37M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 73 | Morgan Stanley ✦ | 1.21M | +37.1% | $104.37M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 74 | Morgan Stanley ✦ | 1.21M | +37.1% | $104.37M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 75 | Morgan Stanley ✦ | 1.21M | +37.1% | $104.37M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 76 | Morgan Stanley ✦ | 1.21M | +37.1% | $104.37M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 77 | Morgan Stanley ✦ | 1.21M | +37.1% | $104.37M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 78 | Morgan Stanley ✦ | 1.21M | +37.1% | $104.37M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 79 | Morgan Stanley ✦ | 1.21M | +37.1% | $104.37M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 80 | Morgan Stanley ✦ | 1.21M | +37.1% | $104.37M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 81 | Morgan Stanley ✦ | 1.21M | +37.1% | $104.37M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 82 | Morgan Stanley ✦ | 1.21M | +37.1% | $104.37M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 83 | Morgan Stanley ✦ | 1.21M | +37.1% | $104.37M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 84 | Morgan Stanley ✦ | 1.21M | +37.1% | $104.37M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 85 | Morgan Stanley ✦ | 1.21M | +37.1% | $104.37M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 86 | AQR Capital Management ✦ | 1.25M | +75.8% | $103.96M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 87 | AQR Capital Management ✦ | 1.25M | +75.8% | $103.96M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 88 | AQR Capital Management ✦ | 1.25M | +75.8% | $103.96M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 89 | AQR Capital Management ✦ | 1.25M | +75.8% | $103.96M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 90 | AQR Capital Management ✦ | 1.25M | +75.8% | $103.96M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 91 | AQR Capital Management ✦ | 1.25M | +75.8% | $103.96M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 92 | AQR Capital Management ✦ | 1.25M | +75.8% | $103.96M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 93 | AQR Capital Management ✦ | 1.25M | +75.8% | $103.96M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 94 | Barclays Plc | 1.10M | +7.1% | $94.26M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 95 | Barclays Plc | 1.10M | +7.1% | $94.26M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 96 | Barclays Plc | 1.10M | +7.1% | $94.26M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 97 | Barclays Plc | 1.10M | +7.1% | $94.26M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 98 | Barclays Plc | 1.10M | +7.1% | $94.26M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 99 | Citigroup Inc | 1.01M | +100.5% | $86.68M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 100 | Citigroup Inc | 1.01M | +100.5% | $86.68M | 0.1% | ▲ Add | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
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)
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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