NEW YORK ( TheStreet) -- Discover Financial Services ( DFS) and Capital One Financial ( COF)saw Goldman Sachs analysts revised their estimates higher Tuesday following two months of positive credit card data. Arguing that results "were generally strong for all" credit card lenders, Goldman's analysts argued Discover "continues to show the strongest trends, as loan growth exceeded peers and losses and delinquencies improved further." Discover is on Goldman Sachs ' "conviction list" of buy recommendations it endorses most strongly. Goldman raised third quarter estimates for Discover to $1.07 per share from $1.04 versus the Thomson Reuters consensus number of $1.03. It upped fourth quarter estimates by a penny to $1.09. The consensus is $1.01. Goldman has a $41 price target on Discover, shares of which were down 0.59% to $38.50 in early trading Tuesday morning. As for Capital One, Goldman hiked third and fourth quarter estimates by two cents each to $1.73 and $1.71 per share, respectively. That's ahead of consensus estimates of $1.70 and $1.64. Goldman's price target is $61. Capital One shares were down by 2.08% to $57.54 early Tuesday. -- Written by Dan Freed in New York. Follow this writer on Twitter.