Stock futures are flat in overnight trading Tuesday: Live updates – CNBC

Below are some of the stocks that made the biggest moves after the bell.

• WD-40 — The maker of rust removers and lubricants soared nearly 7%. WD-40 reported first-quarter financial results, with both sales and bottom line exceeding Wall Street expectations. The company also reported that sales increased by 13% over the previous year.
• Intuitive Surgical — Intuitive Surgical's stock rose nearly 5% after the medical device maker provided better-than-expected sales guidance for the fourth quarter. The company said it expected revenue of $1.93 billion, higher than the $1.87 billion expected by analysts surveyed by FactSet.
• PriceSmart — PriceSmart stock soared 9% after reporting first-quarter results. The company said sales increased 11% year-over-year, and earnings per share excluding items was $1.24. This beat FactSet's forecast of $1.09.
• Coinbase, Marathon Digital — Cryptocurrency exchanges Coinbase and Marathon Digital fell about 1% and 2%, respectively, as Bitcoin prices fell. The U.S. Stock Exchange announced that its official X account was compromised due to a false post that said the exchange had approved a Bitcoin exchange-traded fund.

— Samantha Subin