The field keeps on changing for online stock and option brokers with lots of M&A activity amongst the discount brokers.
I've had an account with OptionsHouse due to their low commissions and margin rates, but then they merged with TradeMonster, they more or less let me keep my commission schedule, but raised margin rates, now they are owned by E*Trade.
I also have a Schwab account (solo 401k) that started off with $8.95 commissions and has been going down over the years. Recently Schwab has posted on their website that their commissions are down to $6.95 with satisfaction guarantee, however interestingly enough, a few trades a recently placed were only charged $5.95. Did anyone else notice $5.95 commissions on Schwab.com?
Lastly, while IB is the low cost leader, both on commissions and more importantly on margin rates, they are impractical for me due to the data and other fees (I am also not an "active trader").
And while PlaceTrade.com might have been a viable alternative (seems like they use the IB platform with similar low rates), they don't currently open accounts for NY residents.
What's the best online discount broker you use, based on commissions, fees and margin rates?