The Dow Jones Industrial Average was on the verge of ending its longest winning streak in 36 years on Thursday, successive gains showing that Wall Street's tech-driven rally is broadening to include a wider chunk of the stock market. The Dow closed higher for 13 straight sessions through Wednesday, its longest series of positive closes since 1987, and was last down 0.5% on Thursday afternoon after gaining earlier in the session. While the S&P 500, which includes over 500 stocks, is many investment professionals' preferred stock market benchmark, the Dow's daily moves are ...