Tuesday’s session ended in positive territory. Travelers, UnitedHealth, DuPont and Alcoa led the Dow’s ascent. Brands posted gains amid a variety of economic news. Sales of existing homes decreased slightly in December. The National Association of Realtors said sales fell to an annualized pace of 4.94 million last month, from a downwardly revised 4.99 million in November. Economists had expected a sales rate of 5.1 million units in December. On another note, Travelers reported quarterly data. Earnings hit $304 million, or 78 cents a share, down from $618 million, or $1.51, in the same period, a year ago. Elsewhere, crude oil futures added 62 cents to settle at $96.18 a barrel.