Alteryx stock falls 15% on mixed results, outlook

Alteryx Inc. AYX fell in the extended session Thursday after the data software company reported mixed results and outlook with respect to Wall Street expectations. Alteryx shares fell as much as 15% after hours, following a 1.3% rise in the regular session to close at $51.02. The company reported a first-quarter loss of $89 million, or $1.27 a share, compared with a loss of $105.6 million, or $1.56 a share, in the year-ago period. The adjusted loss, which excludes stock-based compensation expenses and other items, was 19 cents a share, compared with 40 cents a share in the year-ago period. Revenue rose to $199.1 million…