Derivatives like futures and options play a big role in the Turkish stock market. They have lower costs, more leverage, and higher liquidity than regular stock trading. These derivatives help investors manage risks and diversify their portfolios. A study looked at how introducing index futures and options affected the volatility of the Borsa Istanbul 30 Index. They used a GARCH model to analyze the market from 1997 onwards. The results showed that trading in derivatives had an impact on the volatility of the stock market in Turkey.