Key Points Investing in a stock simply because it has been rising in value is a dangerous game. Stock prices can get out of hand and rise to absurd valuations, but that doesn't mean they'll stay there. These stocks are among the most expensive ones on the market today. 10 stocks we like better than Palantir Technologies › Stocks that are soaring in value can sometimes seem like they can do no wrong. The chart suggests that the uptrend should continue. After all, what's going to stop the stock no ...