Two of the market's most closely watched speculative growth names got hit hard on Tuesday.

Quantum-Si Shares Slip After Q4 Revenue Miss

04:53pm, Tuesday, 03'rd Mar 2026
Quantum-Si, Inc. (NASDAQ: QSI) shares moved lower in Tuesday's extended trading after the company released its fourth-quarter earnings report, missing Street revenue estimates.
I lived through the dot.com bubble and found the experience very enlightening.  With quantum computing likely to be a huge opportunity, I'm still hedging my bets.
BRANFORD, Conn.--(BUSINESS WIRE)--Quantum-Si Reports Fourth Quarter and Full Year 2025 Financial Results.
BTQ Technologies Corp. (NASDAQ: BTQ) is set to get a boost in visibility among U.S. thematic investors after the quantum security company was included in the WisdomTree Quantum Computing Fund (BATS: W

Why Quantum Computing Stock Is Plummeting Today

12:05pm, Tuesday, 03'rd Mar 2026
Quantum Computing's Q4 report arrived with a smaller-than-expected loss and a miss on sales. The company issued some very encouraging guidance for this year.
Wecan Integrates WISeKey's WISeID Digital Identity into its Compliance Solutions and Advances Post-Quantum Security with SEALSQ
Quantum Computing, Inc. (NASDAQ: QUBT) shares moved lower in Monday's extended trading after the company released its mixed fourth-quarter earnings report, beating EPS estimates while missing revenue
Quantum computing could prove to be a long-term upside catalyst for Microsoft. Microsoft is already monetizing AI at scale, with Azure growing 39% year over year in the second quarter.
Quantum Capital reduced its holding by 83,107 shares; estimated transaction value: $7.43 million (based on the quarterly average price). Quarter-end DSGX position value dropped by $8.04 million, refle
HOBOKEN, N.J., March 2, 2026 /PRNewswire/ -- Quantum Computing Inc. ("QCi" or the "Company") (Nasdaq: QUBT), an innovative, quantum optics and integrated photonics technology company, today released
Moonage Media examines the growth trajectory of Quantum X Labs in connection with Viewbix's pending acquisition HONG KONG, March 2, 2026 /PRNewswire/ -- Quantum X Labs Ltd., an innovative Israeli quan
LONDON, March 02, 2026 (GLOBE NEWSWIRE) -- Arqit (Nasdaq: ARQQ, ARQQW), a global leader in PQC migration tooling and quantum-safe encryption, and RAD, a global leader in networking edge solutions, tod
Rigetti Computing is upgraded to Neutral, as valuation multiples have normalized following a significant pullback. Rigetti faces product delays, notably the 108-qubit system, but a recent $8.4M India
Rigetti's gate-based approach offers more long-term upside, while D-Wave's hybrid systems generate steadier near-term revenue. D-Wave has the edge on survival metrics, with a larger cash position and
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