$Palantir (PLTR.US)$ is seeing heavier trading on call options that give the holders the right to buy the stock at $35 ahead of its inclusion into the S&P 500 index.
The stock jumped as much as 12.9% Monday to $34.23, the highest since early 2021. That share price rally moved the $35 call options closer to being in-the-money, sending the price of the contract soaring more than 200%.  
More than 86,000 call opt...