September 30th, 2008, 1:25 pm
I think there are several different kinds of quants these days who do very different kind of job, so it's difficult to give one definition. I met several kinds so far, so I can only talk intelligently about them.1. A person who supports a desk. When the market is open he/she does a lot of different tasks for traders. Each task takes only about 10-15 minutes to do and it has to be done quickly (or you getting yelled at), and it's usually to assess the risk of a trade, give traders a benchmark for a hedge ratio for some product, or to run a stress scenario on a trade that a trader told you to run. Does he/she do "a lot of programming" during market hours? Some would say no as it is a collection of small Matlab-like functions written only for that specific task. But the person is definitely a quant, and one of the most prestigeous kinds in my opinion. After the market is closed quants usually switch to long-term projects which require more programming than during market open hours. Information about those tasks people don't share as openly, so I don't know anything here, besides my own projects.2. Algo trading quant. A person does not do any model development that he/she/all of us studied in Grad School - no stochastic volatility model calibration, no HJM calibration, no derivatives pricing... etc... The job is to take data (market data or news feeds for example) and to test a strategy that your boss told you to test. Very interesting job in my opinion (at least at first), the person is a quant, but he does nothing like what she/he was preparing for in school. 3. Risk quant. Similar to 1 in terms of many little tasks during the day and doing long-term project during the night hours and programming, but instead of judging risk of a particular trade, risk quant is judging risk of the whole position that a trader/firm holds. Not as hands on as desk quant, but the advantage is he/she is better exposed to a variety of different products. A desk quant might be a specialist in 2-3 kinds of derivatives, a risk quant has to know many many more, but maybe not as good as a desk quant knows his 2-3. The job also usually involves some reporting responsibilities such as VaR, stress scenarios, etc... 4. Model developer quants (research quants?). Almost a back office job in a way. These people develop/test large complicated models such as interest rate models, prepayment models, default models. The job incolves a lot of math and a lot of programming. Very good experience, i.e. very possible to move to 1 and 2, but you need to be geeky to do this job.