The Dow Jones Industrial Average and other stock indexes turned lower in the stock market today after Wall Street mulled a mixed January jobs report. After earnings reports, Amazon.com (AMZN) fell while buy-now-pay-later firm Affirm (AFRM), Expedia (EXPE) and Cloudflare (NET) rallied. Selling was concentrated in the Nasdaq composite, which was down 0.5%. Losses were about 0.2% in the Dow…