Palantir ($PLTR@US) surged 18 percent in premarket trading Tuesday after reported fourth-quarter profits, the software company’s first GAAP profit in its history. Palo Alto Networks ($PANW@US) rose 1 percent premarket after Goldman Sachs ($GS@US) initiated coverage for the cybersecurity stock with a buy rating. Cadence Design Systems ($CDNS@US) rose 5 percent premarket after beating top and bottom estimates for the first quarter. Amkor Technology ($AMKR@US) dropped 3 percent premarket after the semiconductor’s fourth-quarter earnings came in below estimates.