RBRK
Rubrik, Inc. · Technology · Software - Infrastructure
Momentum inputs (comparable managers):
holder breadth +9.1% ·
share flow +30.0% ·
net new positions +8.3%
· formula
Broad accumulation: rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 3 | -1 | 205.23K | $22.72M | n/a | −1 |
| Q2 2026 | 132 | -4 | 98.66M | $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 | n/a | −1 |
| Q4 2024 | 16 | +3 | 13.52M | $883.53M | +3 | n/a |
| Q3 2024 | 12 | +1 | 9.15M | $294.28M | +3 | −2 |
| Q2 2024 | 11 | n/a | 6.38M | $195.52M | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Norges Bank ✦ (passive) | 4.10M | +24.2% | $131.77M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 2 | Altimeter Capital ✦ | 1.65M | +842.1% | $53.00M | 0.8% | ▲ Add | 2 | SEC ↗ |
| 3 | Point72 Asset Management ✦ | 1.31M | New | $42.25M | 0.1% | New | 1 | SEC ↗ |
| 4 | Geode Capital Management ✦ (passive) | 568.65K | +133.3% | $18.29M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 5 | ARK Investment Management ✦ | 420.93K | +113.6% | $13.53M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 6 | Citadel Advisors ✦ | 399.64K | -48.0% | $12.85M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 7 | Tiger Global Management ✦ | 250.00K | 0.0% | $8.04M | 0.0% | Held | 2 | SEC ↗ |
| 8 | Millennium Management ✦ | 237.06K | +15.9% | $7.62M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 9 | Marshall Wace ✦ | 107.83K | -37.6% | $3.47M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 10 | Arrowstreet Capital ✦ | 62.76K | New | $2.02M | 0.0% | New | 1 | SEC ↗ |
| 11 | T. Rowe Price ✦ | 30.57K | New | $983,000 | 0.0% | New | 1 | SEC ↗ |
| 12 | Two Sigma Investments ✦ | 14.30K | 0.0% | $459,745 | 0.0% | Held | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Point72 Asset Management | $42.25M | 0.1% |
| Arrowstreet Capital | $2.02M | 0.0% |
| T. Rowe Price | $983,000 | 0.0% |
Exited
| Viking Global Investors | $27.51M | was 0.1% |
| Soros Fund Management | $4.69M | was 0.1% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 459 holders, 113.97M shares, $5.39B 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, Director · 3.06K sh · $381,233
Officer, Director · 13 sh · $1,632
Officer, Director · 1.48K sh · $182,267
Officer, Director · 8.27K sh · $1.03M
Officer, Director · 68 sh · $8,684
Officer, Director · 1.07K sh · $135,624
Officer, Director · 11.10K sh · $1.40M
Officer, Director · 582 sh · $72,954
Officer, Director · 2.91K sh · $360,629
Officer, Director · 5.60K sh · $688,744
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology