I think the best way is to hold it in your bitcoin wallet and make at least a monitoring of exchange rate in buying and selling. Just holding the bitcoin can have a higher returns if it sell in a higher price.
The best to store my bitcoin is blockchain wallet because I do not trust any other wallet due to the security and authentication. For me only blockchain is trustable and reliable. Keep your bitocins in blockchain wallet and swait for some time and do not use or spend them if you do not need and when the price go up more then you can use or sell your bitcoin using your blockchain wallet.
For me the best way to store my bitcoins is blockchain wallet, because it is the most reliable, secure and authentic wallet for my bitcoins. The transaction is also easy and the use from blockchain wallet is also comfortable. I will suggest to all the people to use blockchainbitcoin wallet for holding and storing their bitcoins. No other wallet is so secure and reliable like blockchain.