https://www.cnbc.com/2018/05/14/lyft-market-share-051418-bosa-sf.html

For the first time, Lyft is disclosing internal market-share numbers, and they show its momentum isn't letting up after it capitalized on Uber's disastrous 2017.

Lyft says it has 35 percent of the national ride-sharing market, up from 20 percent 18 months ago. That would represent growth of 75 percent.