MarketWatch First Take: Twilio stock has already tripled this year, and is headed for its best day ever — here’s why

Twilio Inc. shares had already tripled on the year heading into Tuesday afternoon’s earnings report, but that was just a prelude to a record day on Wednesday that shows growing belief the little-known software company could be a giant in the making.

Twilio TWLO, +35.44% stock gained 35.4% Wednesday , easily the best one-day gain in history for the stock, which has now quadrupled on the year with a gain of 307%. For comparison, the Nasdaq Composite Index COMP, +2.64% has gained 9.2% in 2018 and the S&P 500 index SPX, +2.12% has increased 3.1%

Twilio offers an essential service to developers who create mobile apps, as its software is used to connect apps to essential functions elsewhere on a device and a company’s ecosystem, mainly dealing with phone calls and messaging.

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