Afterthought:That doesn’t mean you will double your money as one token will be worth considerably less than the chain with the most proof-of-work and possibly even be worthless. The chance of a smaller chain surviving with the current network difficulty for miners would be a tough thing to accomplish, and the chain would need a decent amount of support to survive. The new chain or the legacy chain does have a chance to grow longer than the other, and each chain will have a certain amount of hashrate. If there is a chain split the likeliness of significant price fluctuations and confusion is very probable.