At the end of each day, your open investment positions may be subject to a charge called a Financing Fee. The Financing Fee value, on which interest is based, may change from time to time without a prior notification to clients.
Financing fee = price х volume х Financing fee % /100/360
Twitter, 100 shares, buy, Financing fee = 25 х 100 х -7% /100 /360 = -$0.49
Please note that on the night of Friday to Saturday the Financial Fee is tripled for Stocks, Currencies, Indices.