Shares of Palantir (PLTR -2.52%) are seeing big sell-offs in this week's trading. The stock's price is down 14.6% from last week's market close, according to data from S&P Global Market Intelligence.Meanwhile, the S&P 500 index is down 0.4% over this stretch, and the Nasdaq Composite index is down 0.7%. The market is closed today in remembrance of President Jimmy Carter.Macroeconomic conditions and indicators have shifted in a more bearish direction this week, spurring big sell-offs for Palantir and other g ...