ARCT
Arcturus Therapeutics Holdings Inc. · Healthcare · Biotechnology
Momentum inputs (comparable managers):
holder breadth +7.7% ·
share flow -9.2% ·
net new positions +7.1%
— formula
Ownership fragmentation — more holders, smaller aggregate stake
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 62 | +4 | 19.18M | $128.95M | +5 | −1 |
| Q1 2026 | 60 | 0 | 18.54M | $142.94M | +4 | −4 |
| Q4 2025 | 60 | 0 | 18.71M | $114.66M | +3 | −3 |
| Q3 2025 | 16 | -1 | 10.27M | $189.25M | +1 | −2 |
| Q2 2025 | 14 | +1 | 8.29M | $107.85M | +2 | −1 |
| Q1 2025 | 10 | +3 | 4.50M | $47.65M | +3 | — |
| Q4 2024 | 7 | -2 | 3.97M | $67.41M | — | −2 |
| Q3 2024 | 8 | -2 | 3.11M | $72.14M | — | −2 |
| Q2 2024 | 10 | — | 3.78M | $92.06M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 2.64M | — | $34.36M | 0.0% | n/c | 1 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 2.64M | — | $34.36M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 2.64M | — | $34.36M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 2.64M | — | $34.36M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 2.64M | — | $34.36M | 0.0% | n/c | 1 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 2.64M | — | $34.36M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 2.64M | — | $34.36M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 2.64M | — | $34.36M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 2.64M | — | $34.36M | 0.0% | n/c | 1 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 2.64M | — | $34.36M | 0.0% | n/c | 1 | SEC ↗ |
| 11 | The Vanguard Group ✦ (passive) | 1.81M | — | $23.55M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | The Vanguard Group ✦ (passive) | 1.81M | — | $23.55M | 0.0% | n/c | 1 | SEC ↗ |
| 13 | The Vanguard Group ✦ (passive) | 1.81M | — | $23.55M | 0.0% | n/c | 1 | SEC ↗ |
| 14 | ARK Investment Management ✦ | 1.72M | -14.6% | $22.31M | 0.2% | ▼ Trim | 5 | SEC ↗ |
| 15 | State Street Global Advisors ✦ (passive) | 1.02M | -20.4% | $13.27M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 16 | Geode Capital Management ✦ (passive) | 606.29K | +6.4% | $7.89M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 17 | Geode Capital Management ✦ (passive) | 606.29K | +6.4% | $7.89M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 18 | Fidelity (FMR) ✦ | 181.63K | — | $2.36M | 0.0% | n/c | 1 | SEC ↗ |
| 19 | Fidelity (FMR) ✦ | 181.63K | — | $2.36M | 0.0% | n/c | 1 | SEC ↗ |
| 20 | Wellington Management ✦ | 111.91K | +20.5% | $1.46M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 21 | Wellington Management ✦ | 111.91K | +20.5% | $1.46M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 22 | Wellington Management ✦ | 111.91K | +20.5% | $1.46M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 23 | Two Sigma Investments ✦ | 86.36K | +131.2% | $1.12M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 24 | Arrowstreet Capital ✦ | 37.53K | New | $488,226 | 0.0% | New | 1 | SEC ↗ |
| 25 | Citadel Advisors ✦ | 28.68K | +352.1% | $373,127 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 26 | T. Rowe Price ✦ | 23.27K | +15.7% | $303,000 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 27 | AQR Capital Management ✦ | 11.22K | -7.0% | $145,946 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 28 | AQR Capital Management ✦ | 11.22K | -7.0% | $145,946 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 29 | AQR Capital Management ✦ | 11.22K | -7.0% | $145,946 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 30 | AQR Capital Management ✦ | 11.22K | -7.0% | $145,946 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 31 | D. E. Shaw & Co. ✦ | 10.44K | New | $135,785 | 0.0% | New | 1 | SEC ↗ |
| 32 | Point72 Asset Management ✦ | 6.15K | -40.4% | $80,059 | 0.0% | ▼ Trim | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Arrowstreet Capital | $488,226 | 0.0% |
| D. E. Shaw & Co. | $135,785 | 0.0% |
Exited
| Millennium Management | $4.89M | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 124 holders, 24.09M shares, $182.18M 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.