Looking at your horoscope we see that Cancer sign rules the 5th house which is of speculative gains. Moon its lord is posited in the 8th house and debilitated in the Navamsha chart. This is not good as it indicates losses in speculation. Debilitated Rahu in the bhagyastan or the 9th house aspects the 5th house further increases chances of losses in this business. Therefore it is better for you Not to indulge in speculative work. You can invest in good and high quality stocks but do not indulge in speculation.
Also as per your horoscope anything related to electronics will suit you, it can be dealing in Mobiles or Computers.