$Coinbase Global, Inc.(COIN)$ After a two-day plunge, the iv of COIN's January expiration options rose above 100%. The most active trading volume is in options expiring in the current week, because options become more expensive due to iv and are more suitable for sellers.It is worth noting that yesterday's call/put was still not low. Most call options are traded, and even buying call options is higher than selling call options. This situation may also be because the iv is too high and the put price is expensive, so institutions prefer to short sell call. However, around 4:00, some people bought puts expiring at 145 this week $COIN 20240105 145.0 PUT$The most trad