Here’s why Bill.com rocked its NYSE debut and what it means for investors

Obituaries for the IPO market at the end of 2019 were a bit premature, at least in the case of one fintech company whose offering greatly surpassed expectations on Dec. 12.

Palo Alto, California-based Bill.com Holding Inc. — which chose Houston for its second office earlier this year — sold more shares than expected after its stock fetched a higher price than projected. Then its shares soared by about 61 percent when they started trading on the New York Stock Exchange.

The company raised $215.6…