RMBS
Rambus Inc. · Technology · Semiconductors
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2026
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 3 | 0 | 186.25K | $16.07M | n/a | n/a |
| Q2 2026 | 141 | +6 | 78.40M | $10.37B | +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 | 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 |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Assenagon Asset Management S.A. | 129.00K | +102.2% | $13.77M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 2 | Wealth Enhancement Advisory… | 57.09K | +284.9% | $2.28M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 3 | TD Waterhouse Canada Inc. | 161 | +26.8% | $17,259 | 0.0% | ▲ Add | 4 | 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
| No tracked exits this quarter. |
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.
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)
Director · 5.00K sh · $525,000
Director · 5.00K sh · $504,600
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology