It is very simple. A friend of mine had an exit target of 6.25. He was happy when he hit that. Your target is dependent on what you do with your money on cashing. Is there something better you have in mind? if so it is easy. Xoma is a $20 stock my friend so hold on for atleast 1 more year.
If you take into account the reverse split of 15 to 1, a $15 share price would bring it to around the original $1 value. If their upcoming drug trials pan out to be successful, this could easily reach $20--$25 range next year. Many of the old timers who hopefully did not sell may have an opportunity of making some of their money back. This company has disappointed investors for decades, hopefully a silver lining is coming..... Merry Christmas and good luck people!