There`s a very big difference between a stock broker and a trader.
There are no records kept nor are there any reporting requirements that require firms to report what they pay their sales people or their traders.
A good sales rep will easily make over 100 a year as will a trader.
It`s easier to become a sales rep than it is a trader,
a trader can always be a sales rep but most sales reps could never be traders.
In the US to become a sales rep you need to be an employee of a Broker/Dealer so they can sponsor you in order to become a licensed stock broker.
Your college major is not important,
(No courses in the Academic world prepares you to be a broker).
But since your coming into the world of Finance,
some of the more helpful majors would be Finance,
Economics or Statistics,
You should be good at math and have a decent idea about the stock market.
You should be good at selling,
and it would help if you have an outgoing personality.
Try to get with any major brokerage firm they will put you through an in-house training program,
which is primarily getting you ready to take the necessary test for licenses.
You will need a Series 7 which is a General Securities Brokers test,
and a Series 6 which is just for state approvals.
Most brokerage firms,
except bank B/Ds,
will put you on salary and once you have passed the test,
they will slowly take you off salary and put you on commission basis pay out.
Banks will usually keep you on salary.
If you have your choice,
you`re always better going to work for a regular B/D rather than a bank - You will learn,
better and the proper way of how the industry works.
As a broker for a B/D you can always find another B/D that will hire you or at the worse,
you can always work for a bank.
But if you`re Bank B/D trained and licensed,
it`s very difficult to go work for a regular B/D
It may be easier for you to get hired as a sales rep (trainee)
since there are no trader trainee positions.
Once a sales rep you can always try to move into trading.
But if you have an offer to work in the trading department (especially if it`s on the floor)
for a major brokeage firm (regardless of the job)
try it you`ll like it