TIP: Are you staking your coins? If not, you are losing Horizon's 10% stake holder's bounty!
With only few more weeks left to the end of Horizon's distribution, any coin that is left in the exchanges is losing daily interest. If you want to increase the value of your investment, you must have it moved to an account. At the current rate our promotion will last only 4-6 more weeks, so you are advised to take your money out of the exchanges and stake it in your account.
By the way, this advise is valid for other coins, keeping your money in the exchanges might be risky...