Spot margin trading lets you buy and sell crypto on Kraken using funds that could exceed the balance of your account. Unlike futures and derivatives trading, spot margin trading involves buying or selling the actual underlying assets, rather than financial contracts.For example:Suppose you fund your account with $5,000 USD. Using an extension of margin from Kraken, you could buy or sell $10,000 USD worth of BTC/USD on the BTC/USD order book with this account.