This is the warrant I bought on Tuesday, for .15 CHF. Sold on Thursday for .16. Gain was 6.6%, not too bad for two days.
I have to say that actually I don't keep my positions so short, but yesterday I've see that UBSN was a little down, so I decided not to be greedy.
Today the warrant is between .15 / .16 and .16 / .17 (bid / ask).
I think I can buy it again at .15, beginning of the next week.