> What's the risk here? That if the NYSE establishes a monopoly, it could extract a 0.5% tax on every trade?
Whilst shares may be listed on the NYSE, they don't have to trade there - there's a number of alternative exchanges/ECNs/books/pools/brokers that will happily buy and sell NYSE listed shares cheaper/quicker than NYSE.
Whilst shares may be listed on the NYSE, they don't have to trade there - there's a number of alternative exchanges/ECNs/books/pools/brokers that will happily buy and sell NYSE listed shares cheaper/quicker than NYSE.