SGOV's share price changes and can drop. Can I lose money on it?

I bought SGOV because I wanted a cash like asset that I could sell whenever I want that would make more interest than the bank. However, when SGOV pays interest, the share price dropped (from 100.50 to 100.30). Therefore, if I sold now, aren't I losing money in comparison to a bank where the original capital is unchanged and the interest is just added to it?