One of my best friends is a level 3 CFA candidate who works in trading. The CFA at this point in his career- 2 years out of undergraduate will do nothing for him. When he tries to climb the ladder within his bank later on is when it will matter...assuming that is your goal. Again, it all depends what your goals are, a CFA would be useful in some areas, and irrelevant in others. Look at job postings, I've seen some that require CFA, although I can't say if they were for quants or not.