SPOK
name pending profile ingest
Momentum inputs (comparable managers):
holder breadth +30.0% ·
share flow +13.4% ·
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 Q1 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 60 | -2 | 8.60M | $88.12M | +3 | −5 |
| Q1 2026 | 64 | 0 | 8.35M | $91.13M | +2 | −2 |
| Q4 2025 | 64 | 0 | 9.26M | $122.14M | +1 | −1 |
| Q3 2025 | 16 | 0 | 6.46M | $111.43M | — | — |
| Q2 2025 | 13 | +2 | 5.21M | $92.16M | +2 | — |
| Q1 2025 | 8 | +3 | 2.28M | $37.51M | +3 | — |
| Q4 2024 | 5 | -1 | 2.01M | $32.30M | — | −1 |
| Q3 2024 | 5 | +1 | 1.65M | $24.86M | +1 | — |
| Q2 2024 | 4 | — | 1.52M | $22.55M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Renaissance Technologies ✦ | 1.02M | +4.5% | $16.76M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 488.37K | -5.1% | $8.03M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 3 | Geode Capital Management ✦ (passive) | 488.37K | -5.1% | $8.03M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 4 | State Street Global Advisors ✦ (passive) | 437.28K | -0.3% | $7.19M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 5 | Citadel Advisors ✦ | 154.32K | +400.8% | $2.54M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 6 | Citadel Advisors ✦ | 154.32K | +400.8% | $2.54M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 7 | Two Sigma Investments ✦ | 63.83K | New | $1.05M | 0.0% | New | 1 | SEC ↗ |
| 8 | Marshall Wace ✦ | 53.26K | New | $875,545 | 0.0% | New | 1 | SEC ↗ |
| 9 | Marshall Wace ✦ | 53.26K | New | $875,545 | 0.0% | New | 1 | SEC ↗ |
| 10 | Millennium Management ✦ | 48.50K | -8.4% | $797,389 | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 11 | AQR Capital Management ✦ | 16.46K | New | $270,675 | 0.0% | New | 1 | SEC ↗ |
| 12 | AQR Capital Management ✦ | 16.46K | New | $270,675 | 0.0% | New | 1 | SEC ↗ |
| 13 | AQR Capital Management ✦ | 16.46K | New | $270,675 | 0.0% | New | 1 | SEC ↗ |
| 14 | AQR Capital Management ✦ | 16.46K | New | $270,675 | 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
| Two Sigma Investments | $1.05M | 0.0% |
| Marshall Wace | $875,545 | 0.0% |
| Marshall Wace | $875,545 | 0.0% |
| AQR Capital Management | $270,675 | 0.0% |
| AQR Capital Management | $270,675 | 0.0% |
| AQR Capital Management | $270,675 | 0.0% |
| AQR Capital Management | $270,675 | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 137 holders, 10.42M shares, $110.26M 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 · 8.32K sh · $93,870
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology