I am an undergraduate student studying Finance and just finished reading an introduction to stochastic analysis. Now I am looking to do research on topic related to quantitative finance.But, I would like to learn something that is going to be useful in the market.Note that I am aiming to act on a non-deep market in Europe (Not England or Germany etc.).Due to this,I wonder whether quantitative methods can be used in markets with less liquidity and trading volume. I was thinking option pricing as an interesting topic but lack of deepness in the market pulls me back.I am free to any suggestion,from risk management,..etc.