Quantum computing startup Rigetti Computing to go public via SPAC, in a deal expected to raise $458M at a $1.5B valuation
Taylor Soper / GeekWire :
Context & Ripple Effects
Rigetti's path to this listing runs through a decade of venture rounds that ended badly: after an $24M Series A led by Andreessen Horowitz and a $50M round in late 2017, the company took $71M at a significant valuation cut in 2020 as commercial quantum applications stayed thin. The SPAC at $1.5B resets that mark at more than double the private-market price.
The timing is no coincidence: IonQ announced its own $650M SPAC at a $2B valuation five days earlier, making this the second quantum pure-play to reach public markets within a week and giving investors their first side-by-side comparison of the sector's two leading trapped-ion/superconducting approaches.
First-order effects
- Rigetti gains a public-market balance sheet worth $458M in expected proceeds, ending its dependence on venture rounds that had already forced one down valuation.
- Public investors get a second listed quantum hardware maker alongside IonQ, with Rigetti's $1.5B valuation immediately serving as the cheaper comp to IonQ's $2B.
Second-order effects
- Other private quantum companies now have a public pricing template — and pressure to follow it, since staying private means justifying a lower mark than listed peers with comparable qubit counts.
- SPAC sponsors, freshly shown that quantum hardware clears the $1.5B+ bar, gain an incentive to court the remaining private players in the field, tightening the supply of independent quantum startups.
Third-order effects
- The listing decouples quantum valuations from near-term revenue, a pattern the corpus later shows running to extremes: Rigetti and D-Wave shares surged more than 1,900% in a year, and Quantinuum's 2026 IPO priced at up to a $14.3B valuation — an order of magnitude above the SPAC-era marks.
- If the pattern holds, quantum computing consolidates into a publicly traded asset class where capital access, not qubit roadmaps alone, determines which hardware approaches survive the long road to commercial applications.
The trend: Quantum computing's financing is migrating from venture rounds to public markets, with the 2021 SPAC window opening a valuation cycle that later IPOs and retail surges carried far beyond commercial fundamentals.