Fat finger error in Sensex options at 40x market price; costs trader Rs 78 lakh
A trader by the name of SOAMJENA put in a market order to purchase the 67000 call option for just Rs 4-5. However, a "fat-finger" or typing error caused the order to send the premium skyrocketing to an astounding Rs 209 in a matter of minutes.
Source: techstory.in