As of August 2026, SEEQC stock is not yet publicly traded. Allegro Merger Corp is the currently tradable SPAC shell; if the merger closes, SEEQC common stock is expected to list on Nasdaq under the ticker "SEQC."
Pre-IPO quantum computing company profile · Founded 2019 · Elmsford, New York, USA
Company Facts
IPO Status
SPAC merger announced
Once the listing closes, SEEQC will join the tracked pure-play quantum stocks on this site.
SEEQC and Allegro Merger Corp expect their merger to close in the third quarter of 2026, subject to governmental approvals and other closing conditions. SEEQC common stock is expected to list on the Nasdaq Global Market under the ticker "SEQC" upon closing.
Until the merger closes, only the Allegro SPAC shell trades; SEEQC plans to submit its Nasdaq listing application before the merger is consummated, with the listing becoming effective at or around closing.
SEEQC (Scalable Energy-Efficient Quantum Computing) spun out of superconducting-electronics maker Hypres in 2019. Its differentiator is Single Flux Quantum (SFQ) digital chip technology: putting qubit control, readout and error-correction logic on cryogenic chips co-located with the qubits, replacing racks of room-temperature electronics and the wiring bottleneck that limits scaling. It runs its own multi-layer superconducting chip fab in New York.
SEEQC has raised over $125M from investors including Merck, Samsung and Leonardo, plus a $30M extension in January 2025. In January 2026 it announced a merger agreement with Allegro Merger Corp at a $1B valuation, expected to close in the third quarter of 2026 with SEEQC common stock listing on Nasdaq under the ticker "SEQC." In June 2026 it also joined the CHIPS Act-funded NORDTECH program for high-coherence qubit manufacturing.
| Round | Amount | Date | Key Investors | Valuation |
|---|---|---|---|---|
| SPAC merger (announced) | — | Jan 2026 | Allegro Merger Corp | ~$1B |
| Series A extension | $30M | Jan 2025 | Booz Allen Ventures, NordicNinja, Merck (M Ventures) | — |
| Earlier rounds | ~$95M | 2019–2023 | M Ventures (Merck), Samsung Catalyst, Leonardo, BlueYard | — |
Rigetti (RGTI) also fabs its own superconducting chips; SEEQC's model is closer to a picks-and-shovels supplier to every superconducting platform.
Related company roadmaps: Official Rigetti quantum roadmap · Official IonQ quantum roadmap
Can you buy SEEQC stock?
Not directly yet. SEEQC announced a SPAC merger with Allegro Merger Corp (January 2026, ~$1B valuation), expected to close in Q3 2026. Until it closes, only the SPAC shell trades; after closing SEEQC will trade on Nasdaq under the ticker "SEQC."
What is SEEQC's ticker symbol?
SEEQC common stock is expected to list on the Nasdaq Global Market under the ticker "SEQC" when its merger with Allegro Merger Corp closes, targeted for the third quarter of 2026.
What makes SEEQC different from other superconducting companies?
It builds cryogenic digital control chips (SFQ) that sit next to the qubits, replacing room-temperature control racks — a scaling technology it can sell to every superconducting quantum vendor, not just its own systems.
Who has invested in SEEQC?
Merck (M Ventures), Samsung Catalyst, Leonardo, BlueYard, Booz Allen Ventures and NordicNinja, among others — over $125M in total private funding.
More pre-IPO quantum companies
Static profile, updated manually · Last updated 2026-08-22 · Sources: SEEQC ↗ · SEEQC / Allegro Merger Corp registration statement (SEC) ↗