physically? you mean short interest > 100%? simple, I own it and lend it to you to short (sell), then I buy it from you again and lend it to you again and I buy it again, a few rounds later, you are short 500 shares and I am long 600 shares, so short interest is 500% on the 100 shares out.
I think what they meant by the 140% that the outstanding short volume was 40% bigger than the existing number of shares. Not the daily volume. That is also physically impossible, unless they used some kind of leverage.
