RTX stock is expensive when valued on earnings. Valued on free cash flow... it's even more expensive. A funny thing happened to RTX Corporation (RTX 4.81%) yesterday -- meaning funny-strange. RTX reported 9% sales growth in its fiscal second-quarter earnings report, and beat analyst forecasts with $1.56 per share earned on revenue of$21.6 billion. Is RTX stock a buy? Call me a cynic, but I just don't see things that way. Beyond guidance, when I look at RTX stock, I see a defense company earning $6.1 billio ...