Speculation and gain thorugh risky investment is not good for your chart. If you indulge in such activities then it may take you through lots of ups and downs and eventually give you some success, but the wait and patience needed is very huge.
Next 7 years of life is meant to reflect and explore rather than chasing quick wealth. If your experiences are great and learnings very string. You will succeed post that very powerfully in all your pursuits and investing in stocks or lottery like areas can be considered after 7 years and throughout life after that.
Saturn in 3rd house blocks house of speculatuion 5th and lord of 5th house is in 6th house in low status aspected by Mercury lord of wealth and gains but based in 12th house.
Ketu dasha underway can bring lots of dissapointments in areas aspected by saturn suddenly. Venus dasha is better for succees in matters of 5th house and wealth.