$Coinbase (COIN.US)$ bears are selling millions of dollars in call optionsat a time when the stock is outperforming its peers in the crypto world.
The cryptocurrency exchange saw its shares climb 5.8% to $190.31 as of 1:40 p.m. in New York as $Bitcoin (BTC.CC)$ advanced 1% to the highest since July. That compares with a 0.4% gain for the company's Bloomberg peers, and the S&P 500's 0.01% decline.
While the gain of more than $1...