$SPDR S&P 500 ETF (SPY.US)$ why are calls so much cheper then puts is it because its gonna drop soon?

Good morning, traders. Happy Monday, September 9th. The market is climbing after last week's rough start to September. My name is Kevin Travers; here are stories about the U.S. stock market today.
$Palantir (PLTR.US)$ climbed 12% Monday after the joint S&P Dow Jones Indices group announced the firm would replace $American Airlines (AAL.US)$ on the S&P 500 before Sept. 23. It was not the only stock swap: $Dell Technologies (DELL.US)$ will repla...