How old do i need to be to buy stocks and start investment?

Im currently 17 years old now. My state's age of majority is 18.
Can I buy stocks and make some investment? Is it legal?

It is not legal for you to buy stocks yet nor have them in a brokerage account unless they were done together with your parents.

However I would strongly suggest that you spend this year (as you only have to wait one year) and save up as much money as you can. The commsions on stock purchases are usually higher if you buy less then 100 shares at a time. You are thinking the right things here, but it will be a lot cheaper if you wait until you have enough saved up to buy at least 100 Shares at a time.

Also, and I give this advice to anyone who is about to make their first investment. Pick out what you want to invest in and then go to a site like yahoo finance and make your own portfolio. Start with the fake money that this allows and begin researching and looking at the charts to try to get to know how the market affects the stock price.

When you turn 18 you will have saved enough money to invest at less cost and you will know what you are planning on buying inside and out. Finally you will have seen how your "fake" portfolio handled itself in a very trying time.

GOOD LUCK!!!!

if You under the age of 18 you and your parents can start an account where you have control of the decisions but your aprents ahve to sign off. When you become 18 you gain full control of the account. Google Custodial Stock Account