Updated from 11:09 a.m. EDTShares of Caterpillar ( CAT) led all Dow gainers Tuesday after Real Money columnist Jim Cramer highlighted the stock on his "Mad Money" program on CNBC. Monday night, Cramer predicted a "monster quarter" from the tractor company, which reports Thursday. He also suggested the company could benefit longer-term from increased oil exploration, saying it's the only supplier of equipment big enough to get to shale oil. Caterpillar recently added $2.23 to $53.05. Shares of Steve Madden ( SHOO) were among the Nasdaq's winners Tuesday, rising 13% after the company previewed second-quarter results that easily topped Wall Street forecasts. When the company reports its second quarter on Aug. 2, it expects earnings of 36 cents to 39 cents a share on sales of $100 million to $101 million. Analysts polled by Thomson First Call had been expecting earnings of 15 cents a share on sales of $86.2 million. Steve Madden also expects same-store sales growth of 13%. A year ago the company earned 28 cents a share on sales of $86.2 million. Looking ahead, Steve Madden expects full-year earnings of 90 cents to 93 cents a share, up from previous guidance of 65 cents to 68 cents a share. Analysts are expecting earnings of 63 cents a share. Shares were recently trading up $2.53 to $21.73. Travelzoo ( TZOO) fell 6% after the company posted second-quarter results that disappointed investors. The online travel-publishing firm reported earnings of $2.2 million, or 12 cents a share, on sales of $12.26 million. Results included a $153,000 charge. Analysts were expecting earnings of 16 cents a share on sales of $12.38 million. A year ago the company earned $1.3 million, or 8 cents a share, on sales of $7.2 million. Shares were trading down $1.83 to $29.71. Shares of Steel Dynamics ( STLD) fell 1% after the company reported second-quarter earnings that fell well short of expectations. The steel company earned $50.7 million, or $1 a share, on sales of $545.8 million. Analysts were expecting earnings of $1.13 a share on sales of $556.3 million. A year ago the company earned $67.3 million, or $1.20 a share, on sales of $525.7 million. "Demand for flat-rolled steel in the second quarter was much weaker than initially expected, particularly toward the end of the quarter," the company said. The weaker demand resulted in lower selling prices and a decrease in the spread between selling prices and cost of ferrous scrap consumed during the quarter, the company added. Shares were trading down 27 cents to $27.98.