The Dow Jones Industrial Average erased its early losses and turned positive Tuesday, creating a split tape as blue-chip strength offset pressure from tech and semiconductor stocks. The reversal came about an hour after the open, with gains in names including IBM, Sherwin-Williams and Microsoft helping the price-weighted index move into positive territory. Caterpillar remained a drag, but the Dow’s structure allowed a handful of large index components to pull the average higher while the broader market stayed weaker.