How much control do they brokers have over the quotes that they give to their customers.
Quote from trader_phil:
how about prices? can they manipulate that? MM brokers excluded of course..
Quote from 1245:
The FX broker makes a deal with different liquidity providers. They then have two ways to make money. They can show you the BEST BID/OFFER in their system and then charge you a commission normally expressed per $100K. That's typical for institutional accounts called ELIGIBLE CONTRACT PARTICIPANT (ECP). For retail FX, it is more common to pay a wider spread. The broker will take the inside market and show you a higher offer and lower bid. The different between them is their profit.
Your question used the term "manipulate" which implies they are doing something wrong. This is where their Profit comes from. In return they offer you a platform to trade on and are responsible for all counter-party risk after the trade.
1245