RBRK
Rubrik, Inc. · Technology · Software - Infrastructure
Momentum inputs (comparable managers):
holder breadth +23.1% ·
share flow +30.0% ·
net new positions +18.8%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 132 | -4 | 98.67M | $7.86B | +10 | −13 |
| Q1 2026 | 138 | -3 | 83.54M | $4.10B | +8 | −12 |
| Q4 2025 | 141 | 0 | 93.71M | $7.16B | +2 | −1 |
| Q3 2025 | 21 | 0 | 43.62M | $3.59B | +3 | −4 |
| Q2 2025 | 19 | +1 | 41.01M | $3.67B | +2 | −1 |
| Q1 2025 | 15 | -1 | 14.41M | $878.86M | — | −1 |
| Q4 2024 | 16 | +3 | 13.52M | $883.53M | +3 | — |
| Q3 2024 | 12 | +1 | 9.15M | $294.28M | +3 | −2 |
| Q2 2024 | 11 | — | 6.38M | $195.52M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Norges Bank ✦ (passive) | 4.24M | +3.5% | $277.39M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 2 | Altimeter Capital ✦ | 1.64M | -0.4% | $107.33M | 1.9% | ▼ Trim | 3 | SEC ↗ |
| 3 | D. E. Shaw & Co. ✦ | 1.42M | New | $93.07M | 0.1% | New | 1 | SEC ↗ |
| 4 | D. E. Shaw & Co. ✦ | 1.42M | New | $93.07M | 0.1% | New | 1 | SEC ↗ |
| 5 | Millennium Management ✦ | 1.09M | +359.1% | $71.13M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 6 | Renaissance Technologies ✦ | 987.30K | New | $64.53M | 0.1% | New | 1 | SEC ↗ |
| 7 | Geode Capital Management ✦ (passive) | 719.46K | +26.5% | $47.05M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 8 | Geode Capital Management ✦ (passive) | 719.46K | +26.5% | $47.05M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 9 | Citadel Advisors ✦ | 707.57K | +77.0% | $46.25M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 10 | Two Sigma Investments ✦ | 649.35K | +4440.9% | $42.44M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 11 | State Street Global Advisors ✦ (passive) | 532.64K | — | $34.81M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | ARK Investment Management ✦ | 415.82K | -1.2% | $27.18M | 0.2% | ▼ Trim | 3 | SEC ↗ |
| 13 | Arrowstreet Capital ✦ | 335.24K | +434.2% | $21.91M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 14 | Point72 Asset Management ✦ | 253.77K | -80.7% | $16.59M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 15 | Tiger Global Management ✦ | 250.00K | 0.0% | $16.34M | 0.1% | Held | 3 | SEC ↗ |
| 16 | T. Rowe Price ✦ | 240.19K | +685.7% | $15.70M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 17 | T. Rowe Price ✦ | 240.19K | +685.7% | $15.70M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 18 | Marshall Wace ✦ | 22.70K | -79.0% | $1.48M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 19 | Gotham Asset Management ✦ | 5.02K | New | $328,042 | 0.0% | New | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| D. E. Shaw & Co. | $93.07M | 0.1% |
| D. E. Shaw & Co. | $93.07M | 0.1% |
| Renaissance Technologies | $64.53M | 0.1% |
| Gotham Asset Management | $328,042 | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 1 holders, 61.90K shares, $3,031 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)
Officer · 4.40K sh · $430,364
Officer · 5.30K sh · $522,845
Officer · 300 sh · $29,979
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology