Proxy Investment

This service can be given by licensed brokers that help their users DCA into certain stocks.

If you are willing to invest in Tesla stock for instance, you can go to the ARPs' page and search for an ARP that does proxy investment for Tesla. Once you find one, you can apply for an account and use that account for all you buy/sell orders of the Tesla stock.

According to the schedule of you account, you will regularly deposit a fixed amount on the account which the account operator will use to regularly purchase your stock from the stock market. Anytime you wish to sell, you can have your account closed.