Expecting a spike in bitcoin? Investors say it may take time

NEW YORK (Reuters) - Investors expecting a sudden surge in bitcoin's price, after it underwent a technical adjustment three weeks ago that reduced the rate at which new coins are generated, may have to wait a few months, or perhaps a few years.Bitcoin traded in narrow ranges after it went through a third so-called halving on May 11, which cut the rewards given to those who "mine" bitcoin to 6.25 new coins from 12.5. There were some expectations that bitcoin would soar, similar to what happened..