You been hammering the Tenche route?
I was on it earlier and made about 25M in an hour and a half.... it's ridiculous to be honest..
Now at 253M in assets, I've had about enough to be honest, been grinding for the A7 shield gen, now I need a bigger reactor, I *wish* so much, there was something else to do in the game where you could make good money, because whilst i'm as guilty as anybody else at hammering these luxury traders - it's dull as absolute ****!
I can see there's a few people posting in the frontier forums, who have over a billion (nearly all of it trading profit) to be honest - I have no idea how they've managed it, because i've been trading "a lot" and i'm about done with it LOL...
Yer, I hit it hard with the T9 for 8 hours ish and brought my assets up from 110M to 180M in that time. It is laborious and I needed to push myself doing it but knowing I would get the Anaconda made it worthwhile. Now I need to grind some more to get the top upgrades

As for those with a bil in credits/assets, I don my hat to them, as they have far more patience than me.