When investing in US Stocks, the trades can be fractional. It means you don’t have to buy the entire share as you do for Indian stocks. You can choose to buy a fractional share.
Since the stock prices are fairly high, you can buy half a stock or even 0.2311 stocks in a company instead of necessarily buying a whole stock.
Therefore, you can order any amount that works for you. You could invest as high as $100 or as low as $10.
Note: There are some restrictions on the trades you place.