I worked there for a year after I got my bachelors degree at UT Austin, VERY great place to work and learn.
The downside is newbies get ZERO salary on w2 fulltime, and they utilize a trade-at-cost commission based compensation system that really encourages churning. Goldman Sachs is their clearing partner, so shit's still working at least.
The upside is, you're considered a partner and your capital losses roll over to a mentor who is in charge of your noob ass and you're supposed to learn as much as you can in order to become profitable, also known as yahtzee or super-yahtzee.
I quit for an analyst job with Texas Pacific Group in friggin Hong Kong and the work environment couldn't compare with Kershner's. Suit and tie everyday using retarded words like leverage and business partner... versus tshirt and jeans, playing quake3 during slow hours.