UPSX
name pending profile ingest
Momentum inputs (comparable managers):
holder breadth +25.0% ·
share flow +30.0% ·
net new positions +20.0%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Optiver Holding B.V. | 16.17K | — | $822,780 | 0.0% | n/c | 1 | SEC ↗ |
| 2 | Citadel Advisors ✦ | 12.95K | New | $640,877 | 0.0% | New | 1 | SEC ↗ |
| 3 | Jane Street Group, Llc | 7.82K | — | $387,090 | 0.0% | n/c | 1 | SEC ↗ |
| 4 | Simplex Trading, Llc | 3.81K | — | $188,694 | 0.0% | n/c | 1 | SEC ↗ |
| 5 | Group One Trading Llc | 129 | — | $6,386 | 0.0% | n/c | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Citadel Advisors | $640,877 | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 4 holders, 22.73K shares, $317,339 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.