A "comet" is a thematic basket organized around a trigger event — the head is the catalyst (IPO, buildout, policy shift), the tail is the set of stocks expected to be dragged along in its wake.
Pure-play QC hardware/SaaS firms (head) trailed by mega-cap proxies running internal quantum programs (wake). Watch for fault-tolerance milestones, useful-quantum claims, and government NQI / DoE funding rounds as catalysts.
| Sym | Company | Wake | Beta | Price | Ratio | 1D % | 7D % | YTD % | Rationale |
|---|---|---|---|---|---|---|---|---|---|
| IONQ | IonQ Inc. | 1 | 1.80 | $34.70 | 1.00× | ▼ -2.30% | ▼ -7.50% | ▼ -25.82% | Trapped-ion pure-play; the bellwether — fault-tolerance roadmap watched closely. |
| RGTI | Rigetti Computing | 2 | 1.85 | $15.23 | 0.44× | ▼ -0.33% | ▼ -0.13% | ▼ -35.47% | Superconducting pure-play; chip foundry advantage. |
| QBTS | D-Wave Quantum | 3 | 1.65 | $17.35 | 0.50× | ▼ -2.53% | ▼ -5.04% | ▼ -38.32% | Annealing + gate-model hybrid; institutional clients. |
| QUBT | Quantum Computing Inc. | 4 | 1.95 | $7.91 | 0.23× | ▼ -3.77% | ▼ -1.62% | ▼ -28.16% | Photonic / room-temp QPU; smallest, most volatile. |
Ratio column: member price ÷ IONQ $34.70 (head price; falls back to closest proxy when head is pre-IPO).
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