OSTX
name pending profile ingest
Momentum inputs (comparable managers):
holder breadth -5.3% ·
share flow +27.7% ·
net new positions -5.6%
— formula
Concentrated accumulation — rising shares among fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 16 | 0 | 1.84M | $3.50M | +3 | −3 |
| Q1 2026 | 16 | -2 | 1.91M | $2.69M | +3 | −5 |
| Q4 2025 | 18 | -1 | 1.30M | $1.82M | — | −1 |
| Q3 2025 | 9 | +6 | 853.81K | $1.67M | +6 | — |
| Q2 2025 | 1 | — | 30.28K | $56,929 | — | — |
| Q4 2024 | 1 | 0 | 29.84K | $127,698 | — | — |
| Q3 2024 | 1 | +1 | 60.44K | $169,218 | +1 | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | The Vanguard Group ✦ (passive) | 540.42K | +187.1% | $756,589 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 2 | The Vanguard Group ✦ (passive) | 540.42K | +187.1% | $756,589 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 3 | The Vanguard Group ✦ (passive) | 540.42K | +187.1% | $756,589 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 4 | Geode Capital Management ✦ (passive) | 246.04K | +31.1% | $344,452 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 5 | Geode Capital Management ✦ (passive) | 246.04K | +31.1% | $344,452 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 6 | Marshall Wace ✦ | 109.95K | -44.6% | $153,929 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 7 | Two Sigma Investments ✦ | 87.54K | +1.5% | $122,552 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 8 | Northern Trust Corp | 71.31K | — | $99,833 | 0.0% | n/c | 1 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 61.42K | +27.5% | $85,995 | 0.0% | ▲ Add | 3 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 61.42K | +27.5% | $85,995 | 0.0% | ▲ Add | 3 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 61.42K | +27.5% | $85,995 | 0.0% | ▲ Add | 3 | SEC ↗ |
| 12 | State Street Global Advisors ✦ (passive) | 58.50K | +16.3% | $81,900 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 13 | Millennium Management ✦ | 30.79K | -67.1% | $43,099 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 14 | Jane Street Group, Llc | 27.74K | — | $38,836 | 0.0% | n/c | 1 | SEC ↗ |
| 15 | Jane Street Group, Llc | 27.74K | — | $38,836 | 0.0% | n/c | 1 | SEC ↗ |
| 16 | UBS Group AG | 18.16K | — | $25,418 | 0.0% | n/c | 1 | SEC ↗ |
| 17 | UBS Group AG | 18.16K | — | $25,418 | 0.0% | n/c | 1 | SEC ↗ |
| 18 | Stifel Financial Corp | 15.00K | — | $21,000 | 0.0% | n/c | 1 | SEC ↗ |
| 19 | Jones Financial Companies Lllp | 10.87K | — | $15,214 | 0.0% | n/c | 1 | SEC ↗ |
| 20 | Mercer Global Advisors Inc /Adv | 10.22K | — | $14,308 | 0.0% | n/c | 1 | SEC ↗ |
| 21 | LPL Financial LLC | 10.11K | — | $14,158 | 0.0% | n/c | 1 | SEC ↗ |
| 22 | Morgan Stanley ✦ | 1.00K | 0.0% | $1,400 | 0.0% | Held | 2 | SEC ↗ |
| 23 | Royal Bank Of Canada | 480 | — | $1,000 | 0.0% | n/c | 1 | SEC ↗ |
| 24 | Northwestern Mutual Wealth… | 25 | — | $35 | 0.0% | n/c | 1 | SEC ↗ |
| 25 | Bank Of America Corp /De/ | 23 | — | $32 | 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
| No new tracked buyers this quarter. |
Exited
| JPMorgan Chase | $50 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 29 holders, 2.90M shares, $4.03M 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.