Largest Quantum Computing companies in the world by Market Capitalization

This ranking features the largest 11 Quantum Computing companies in the world ranked by Market Capitalization, totaling a Market Capitalization of USD 262.44 B, for August 17, 2025.

#	Name	Share Price Year-To-Date (YTD) return Price to Earnings Ratio (P/E) Revenue Revenue Year-on-Year (YoY) growth Operating Income EBIT EBITDA Free Cash Flow Dividend Yield Free Cash Flow Yield Total Assets Total Liabilities Cash and Short-Term Investments	Stock Price	Change	Price (30 days)	52W low/high	Sector

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Frequently Asked Questions

Which Quantum Computing company in World has the highest Market Capitalization ?

The Quantum Computing company in World with the highest Market Capitalization is International Business Machines Corporation (NYSE: IBM) at USD 223.30 B.

Which Quantum Computing company in World has the lowest Market Capitalization ?

The Quantum Computing company in World with the lowest Market Capitalization is AmpliTech Group, Inc. (NasdaqCM: AMPG) at USD 63.78 M.

What are the top 10 Quantum Computing companies in World by Market Capitalization ?

The top 10 Quantum Computing companies in World by Market Capitalization are International Business Machines Corporation, IonQ, Inc., SK Telecom Co.,Ltd, D-Wave Quantum Inc., Rigetti Computing, Inc., QuantumCTek Co., Ltd., Quantum Computing, Inc., Arqit Quantum Inc., ParTec AG and SSH Communications Security Oyj.

What are the bottom 10 Quantum Computing companies in World by Market Capitalization ?

The bottom 10 Quantum Computing companies in World by Market Capitalization are AmpliTech Group, Inc., SSH Communications Security Oyj, ParTec AG, Arqit Quantum Inc., Quantum Computing, Inc., QuantumCTek Co., Ltd., Rigetti Computing, Inc., D-Wave Quantum Inc., SK Telecom Co.,Ltd and IonQ, Inc..