Quote from jnbadger:
If you trade retail, odd lots shouldn't be a problem. But if you're a licensed trader, you're considered to be a "pro" and are expected to be accountable for at least 100 shares at a crack.
I guess my questions remain unanswered. I mean "What are the differences and why 140 shares is allowed while 40 shares is not allowed?" Why does SEC think they are different?
And what are the consequences?