IONQ Inc Stock Price & Performance
IONQ · NEW YORK STOCK EXCHANGE, INC.Live market data · Last updated: July 4, 2026 at 7:31 p.m. (ET). Prices shown in USD and for information only — not investment advice.
IONQ Inc (IONQ) is trading at $49.12 USD, down -4.44% today. It trades on NEW YORK STOCK EXCHANGE, INC. in the Technology sector. Market capitalization is approximately $18.34B USD.
How we think about IONQ Inc at Evermore
IONQ Inc (IONQ) operates in the Technology sector and trades on NEW YORK STOCK EXCHANGE, INC.. A single company — no matter how strong — carries concentration risk that a diversified portfolio does not. We generally frame any individual stock as one holding within a broader plan, sized so that a bad quarter for one company can't derail your goals.
How IONQ Inc is taxed for Canadian investors
For a Canadian holding a US-listed stock like IONQ, two taxes matter. Capital gains on a sale are 50% taxable in Canada (see capital gains tax). Dividends paid by a US company face a 15% US withholding tax under the Canada–US tax treaty (with a valid W-8BEN on file). Prices here are quoted in USD, so currency movements between the USD and the Canadian dollar also affect your real return.
Can you hold IONQ Inc in a TFSA or RRSP?
Yes — US-listed stocks are qualified investments for both. But the accounts are not equal for US dividends: inside an RRSP, US dividend withholding tax is waived under the treaty, while inside a TFSA the 15% withholding still applies and can't be recovered. For US dividend-payers, the RRSP is usually the more tax-efficient home.
Common Questions
What is IONQ Inc's (IONQ) stock price today?
IONQ Inc is trading at approximately $49.12 USD, down -4.44% on the day. Quotes update on a short cache and are for information only.
What is IONQ Inc's market capitalization?
IONQ Inc has a market capitalization of roughly $18.34B USD.
How are US stocks like IONQ taxed for Canadians?
Capital gains are 50% taxable in Canada. US dividends face a 15% US withholding tax under the Canada–US treaty (with a W-8BEN). The withholding is waived inside an RRSP but not inside a TFSA.
Can I hold IONQ in my TFSA or RRSP?
Yes — US-listed stocks are qualified investments for both. For US dividend-paying stocks, an RRSP is usually more tax-efficient because it avoids the 15% dividend withholding that a TFSA cannot recover.
Is IONQ Inc a good investment?
That depends on your plan, time horizon, and risk tolerance — and on how a single stock fits alongside your other holdings. Speak with a CFP® or CIM® before making a concentrated bet on any one company.
Talk to a CFP® or CIM® at Evermore
Independent, fiduciary-style advice from Burlington, Ontario. Serving Canadian families with $500k+ in investable assets.
Book an introductory call