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 | $29.38 | 1.00× | ▼ -2.03% | ▼ -9.40% | ▼ -37.18% | Trapped-ion pure-play; the bellwether — fault-tolerance roadmap watched closely. |
| RGTI | Rigetti Computing | 2 | 1.85 | $11.24 | 0.38× | ▲ 1.35% | ▼ -9.40% | ▼ -52.39% | Superconducting pure-play; chip foundry advantage. |
| QBTS | D-Wave Quantum | 3 | 1.65 | $10.39 | 0.35× | ▲ 0.14% | ▼ -11.77% | ▼ -63.08% | Annealing + gate-model hybrid; institutional clients. |
| QUBT | Quantum Computing Inc. | 4 | 1.95 | $6.42 | 0.22× | ▼ -0.16% | ▼ -7.09% | ▼ -41.69% | Photonic / room-temp QPU; smallest, most volatile. |
Ratio column: member price ÷ IONQ $29.38 (head price; falls back to closest proxy when head is pre-IPO).
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