Let's do the math: $OGN has a current rate of -0.102%, settled every 4 hours, which works out to an annualized rate of about 223.2%.
In other words, if you hold a short position, you're paying the longs each period—the longer you hold it, the worse off you are. Once the market stops falling, short covering can easily push prices up.
Have you ever been liquidated?

For informational purposes only; this is not investment advice. DYOR.