Karyopharm Therapeutics Inc Stock Price & Performance
KPTI · NASDAQ NMS - GLOBAL MARKETLive market data · Last updated: July 4, 2026 at 7:42 p.m. (ET). Prices shown in USD and for information only — not investment advice.
Karyopharm Therapeutics Inc (KPTI) is trading at $9.60 USD, up +0.52% today. It trades on NASDAQ NMS - GLOBAL MARKET in the Biotechnology sector. Market capitalization is approximately $217.56M USD.
How we think about Karyopharm Therapeutics Inc at Evermore
Karyopharm Therapeutics Inc (KPTI) operates in the Biotechnology sector and trades on NASDAQ NMS - GLOBAL MARKET. 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 Karyopharm Therapeutics Inc is taxed for Canadian investors
For a Canadian holding a US-listed stock like KPTI, 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 Karyopharm Therapeutics 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 Karyopharm Therapeutics Inc's (KPTI) stock price today?
Karyopharm Therapeutics Inc is trading at approximately $9.60 USD, up +0.52% on the day. Quotes update on a short cache and are for information only.
What is Karyopharm Therapeutics Inc's market capitalization?
Karyopharm Therapeutics Inc has a market capitalization of roughly $217.56M USD.
How are US stocks like KPTI 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 KPTI 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 Karyopharm Therapeutics 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.
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