What role do costs play in trading?

With frequent trading of smaller quantities, flat rate charges play a huge role because they eat up potential profits. For this reason, we trade directly in the USA. Opening an account is not difficult, and is described here.

Can I buy the allgorite recommendations from a German broker?

The US stock market includes more than 6,500 certificates. We cannot guarantee that all certificates are available from every broker. Interactive Brokers, a US broker that we use ourselves, offers the opportunity to trade all US certificates, as far as we...