Hi all, I just received IB daily statement for Monday and found that I got another interest charged when I had 100% cash sitting in my account on the weekend. I wondered why and did a little research. Here is what I found. I had overnight positions with margin on last Tuesday and the negative ending settled cash($-49,015) was posted on last Friday. And the time that IB charged me interest on that negative balance was on the weekend, therefore, they charged me three days' interest. I guess this is why I got a $-25.98 charge. It doesn't look reasonable to me. How can IB charge me three days' interest when I only had my account in negative balance for one day? Shouldn't IB just charge the interest for that single day? What do you think, guys? Bruce PS: Sorry about my English, it is not my mother tongue.