Why Rigetti Computing, Inc. (RGTI) Stock Fell 5.6% on Oct 12, 2026
The clearest new catalyst: IonQ's Elisity acquisition announcement.
Why did RGTI stock fall?
Rigetti Computing fell 5.6% to $13.25 on October 12, 2026, as part of a broader quantum computing sector selloff triggered by IonQ's announcement of an all-stock acquisition of cybersecurity firm Elisity valued at up to $1.3 billion. The deal sparked dilution concerns across pure-play quantum stocks, with peer D-Wave also declining approximately 4% in sympathy. Underlying sector headwinds—including valuation pressure from high price-to-sales multiples, negative cash flows, and technical challenges in scaling quantum architectures—compounded the decline.
- IonQ's Elisity acquisition announcement: IonQ agreed to acquire cybersecurity firm Elisity in an all-stock deal valued at up to $1.3 billion, triggering dilution fears and profit-taking across pure-play quantum stocks including Rigetti and D-Wave.
- Sector-wide dilution and valuation concerns: Investors grew increasingly cautious over high price-to-sales multiples and negative cash flows in the speculative quantum computing space, leading to defensive portfolio reallocations.
- Technical scaling challenges: Market sentiment was tempered by ongoing technical hurdles in scaling quantum architectures, such as coherence time constraints on systems like Rigetti's 108-qubit Cepheus.
Initial detection
BestStocks first flagged RGTI intraday on Oct 12, 2026; this analysis was finalized after the close using the confirmed −5.6% session move and additional catalyst research.
Show the initial intraday note
RGTI fell 4.70% to $13.37 following a broader quantum computing sector selloff triggered by IonQ's 9% decline after announcing an all-stock acquisition of cybersecurity firm Elisity worth up to $1.3B (247wallst.com, 2026-10-12). D-Wave and Rigetti both fell approximately 4% in sympathy, suggesting sector-wide investor concern over dilution and capital allocation in the quantum computing space. Volume of 4.37M shares ran 1.23x normal for this point in the session.
What to watch next: Rigetti earnings release on 2026-11-09; monitor whether sector leadership (IonQ, D-Wave) stabilizes or continues to weaken, which may set tone for RGTI's next move.
Other developments that session
Analyst projects Rigetti Computing stock could double by 2031 amid quantum computing market expansion.
Frequently asked questions
Why did Rigetti Computing, Inc. (RGTI) stock fall on Oct 12, 2026?
Rigetti Computing fell 5.6% to $13.25 on October 12, 2026, as part of a broader quantum computing sector selloff triggered by IonQ's announcement of an all-stock acquisition of cybersecurity firm Elisity valued at up to $1.3 billion. The deal sparked dilution concerns across pure-play quantum stocks, with peer D-Wave also declining approximately 4% in sympathy. Underlying sector headwinds—including valuation pressure from high price-to-sales multiples, negative cash flows, and technical challenges in scaling quantum architectures—compounded the decline.
How much did RGTI stock fall on Oct 12, 2026?
RGTI fell 5.6% during the Oct 12, 2026 trading session.
What were the main drivers behind RGTI's move?
IonQ's Elisity acquisition announcement; Sector-wide dilution and valuation concerns; Technical scaling challenges.