SurveyMonkey set for Wall Street debut after upsized IPO tops goals

One of Silicon Valley’s oldest venture-backed unicorns headed into its first day as a public company with some strong momentum.

SVMK Inc., the San Mateo online survey company better known as SurveyMonkey, raised $180 million in an IPO that topped its price targets Tuesday night and sold more shares than expected. It sold 15 million shares at $12 each when it was expected to sell just 13.5 million shares for between $9 and $11.

It heads into the day, however, with an initial market cap of nearly…