The economists spend half of their lives developing mathematical models to predict the markets... The other half is to explain why their models didn't work.

Predicting the markets isn't easy, trading is like gambling, there is always a chance to lose. And the best option for us is to have our own criteria, for that you need to read the news every day, have a look at the bitcoin charts to understand how big is the business, and follow the market capitalization.

Sources:
https://www.coindesk.com/
https://www.blockchain.com/en/charts/
https://coinmarketcap.com/

You don't need a top company to trade with bitcoin, is simple as buy then and hold until you are happy with your profit