"Buy and hold has completely failed here," said Jim Cramer on Monday's "Stop Trading!" segment of CNBC's Street Signs. "It's a total traders' market."He was pleased to learn that Tiger Management's Julian Robertson was finding some opportunity in the market. "He actually likes some stocks!" Cramer said. One stock Robertson, earlier in an interview with Street Signs host Erin Burnett, said he was buying was Apple ( AAPL), which Cramer was happy to hear. "I've been liking Apple all the way down and recommended it again on Friday," Cramer said. "I've been telling people to buy Apple for three years." Another Robertson pick was Microsoft ( MSFT), which Cramer called "a cheap stock." Cramer said: "Microsoft shouldn't be that cheap, given the fact that it's got a powerful franchise and how they dodged the bullet with Yahoo! ( YHOO)." As for Goldman Sachs ( GS), Cramer said he was interested to hear what Robertson thought of that stock. "I'm humbled by the action in Goldman Sachs," Cramer said, "but I haven't given up on it yet."