Some reasons I believe bitcoin is likely to rise next time
Bitcoin is dropping sharply from $ 20,000 down to about $ 6,000 by the end of 2017, but that's a lot more than $ 2500 a year ago.
Laws gradually intervene in the market, may form the law for crypto, institutional investors can peace of mind to invest in the market
Mt Gox is allowed by law to compensate bitcoin victims for a percentage, without the need for cash compensation, which could end the sale of large amounts of bitcoin.
How do you believe bitcoin will increase from now until the end of the year?
there's no assurance yet and also, bitcoin is naturally volatile so sudden dumps should always be expected. We cannot be so confident at times like this knowing that we are only in the middle of this year which means there are many things to happen whether it would be in favor to the investors or not. For now continue holding in order to be safe on any uncertainty in the market.