$UVXY

I missed that I had this position close on Tuesday.
BTC UVXY Sept 15 25/100 $60 calls @ $.05, sold for $4.00

Also, I had one of my Jan ’19 $5 short calls get executed last night, sold yesterday. So today I will try to sell another one to match up with the long $10 call or will need to close down a $10 call. I’m now short 100 shares of something that is very hard to borrow. How do I find out what the carrying cost is of being short these things?