VICR
Vicor Corporation · Technology · Hardware, Equipment & Parts
Momentum inputs (comparable managers):
holder breadth -9.1% ·
share flow +4.9% ·
net new positions -10.0%
— formula
Concentrated accumulation — rising shares among fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 128 | +13 | 16.24M | $6.11B | +22 | −9 |
| Q1 2026 | 118 | +18 | 15.68M | $2.48B | +19 | −1 |
| Q4 2025 | 99 | +1 | 16.79M | $1.84B | +2 | −1 |
| Q3 2025 | 18 | +3 | 17.37M | $863.84M | +3 | −1 |
| Q2 2025 | 13 | 0 | 8.08M | $366.47M | — | — |
| Q1 2025 | 10 | -1 | 1.91M | $89.36M | — | −1 |
| Q4 2024 | 11 | +1 | 1.82M | $88.05M | +1 | — |
| Q3 2024 | 9 | -1 | 1.26M | $53.12M | — | −1 |
| Q2 2024 | 10 | — | 1.47M | $48.82M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | State Street Global Advisors ✦ (passive) | 861.54K | -2.9% | $40.30M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 570.81K | +0.3% | $26.71M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 3 | Geode Capital Management ✦ (passive) | 570.81K | +0.3% | $26.71M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 4 | Millennium Management ✦ | 264.61K | +4634.5% | $12.38M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 5 | Citadel Advisors ✦ | 65.91K | -58.8% | $3.08M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 6 | AQR Capital Management ✦ | 40.97K | -31.6% | $1.89M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 7 | AQR Capital Management ✦ | 40.97K | -31.6% | $1.89M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 8 | AQR Capital Management ✦ | 40.97K | -31.6% | $1.89M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 9 | AQR Capital Management ✦ | 40.97K | -31.6% | $1.89M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 10 | AQR Capital Management ✦ | 40.97K | -31.6% | $1.89M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 11 | Norges Bank ✦ (passive) | 34.69K | -37.0% | $1.62M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 12 | T. Rowe Price ✦ | 24.21K | +4.5% | $1.13M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 13 | Arrowstreet Capital ✦ | 22.29K | +126.0% | $1.04M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 14 | D. E. Shaw & Co. ✦ | 16.94K | -45.9% | $792,313 | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 15 | Two Sigma Investments ✦ | 8.56K | +0.1% | $400,577 | 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
| Renaissance Technologies | $604,000 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 365 holders, 18.97M shares, $2.67B 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 · 908 sh · $227,000
Director · 2.07K sh · $523,640
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology