The Dow Jones Industrial Average late-Wednesday was trading at its lowest level of the session, putting the blue-chip gauge on track to book its third triple-digit loss in succession as fears about a lackluster outlook for corporate earnings and economic growth undercut investor confidence. The Dow DJIA, +1.33% was most recently down 604 points, or 2.4%, at 24,578, with losses in Caterpillar Inc. CAT, +0.53% United Technologies Corp. UTX and Goldman Sachs Group Inc. GS, -0.08% delivering the most potent blow to the price-weighted index with less than a half-hour left in the regular trading day. The Dow's losses saw it erase its year-to-date gain and came even as a rally in Boeing Co. BA, +6.83% produced a brief lift for the benchmark at the start of Wednesday trade, but that advance evaporated fast. The S&P 500 index SPX, +1.59% , meanwhile, was down 3.1%, and also wiped out all of its gains in 2018, while the Nasdaq Composite Index COMP, +2.26% slumped 4.4%, and was on the verge of closing in correction territory for the first time in two years, according to Dow Jones Market Data.