You could get the Series 3 on your own if trading futures. Most (if not all) other licenses require firm sponsorship.
thank you for the response. As a matter of fact, I'm in the progress of getting materials for the series exam.
Is there any benefit to obtaining this? I had a friend that took it but it was to be a broker, not trading. Is the exam focused more on rules/regulations and sales or would there be value to the individual trader?