 Shares of Duolingo Inc. DUOL, 0.91 rose more than 8 in the extended session Wednesday after the language-learning app company reported a narrower-than-expected loss and sales that were above Wall Street expectations. Duolingo said it lost 29 million, or 98 cents a share, in the third quarter, compared with a net loss of 3.2 million, or 25 cents a share, in the prior-year quarter. 