The answer to my question

No, there are no people in Canada (or anywhere in the world) with a quadrillion dollars in the bank, and therefore none who are richer than Elon Musk. 

A quadrillion ($1,000,000,000,000,000) is one thousand trillion, an amount that vastly exceeds the total wealth of any individual on Earth. 

Here is the context regarding the richest people in Canada as of early 2026:

• Elon Musk is the richest person in the world: As of February 2026, Elon Musk's net worth is estimated to be over $700–$800 billion USD. He is the closest person on Earth to becoming a trillionaire, not a quadrillionaire.
• Canada's richest person: According to 2025/2026 reports, the richest person in Canada is typically Changpeng Zhao (founder of Binance), with a net worth of approximately $41B to $78B USD, depending on the valuation date.
• Other wealthy Canadians: Other top Canadian billionaires include the Thomson family (media, ~$60–$90B CAD) and David Cheriton (early Google investor).
• Total household wealth: The entire collective wealth of all Canadian households combined is approximately $16.92 trillion CAD. A single person with a quadrillion would have more than 50 times the wealth of every Canadian combined.

The total net wealth of the entire world is roughly half a quadrillion dollars, meaning a single person owning a quadrillion is financially impossible.