Highest earning stock trader?

You're Probably referring to a website that transacts trades for you. Assuming that, I would think that it would trade on the NYSE, NASDAQ, and other U.S. exchanges. That's what American stocks trade...

It Was Berkshire Hathaway's A listing at about $120,000 a share

In 2000 GM stock peaked at $100 per share. That is the highest I can remember.

73.89

I think the only thing high is you. I think Warren Buffet's stock Berkshire shares are the highest priced stocks in the world. But that's because he hasn't split the stocks to make them more...