Quote from msfe:
in the IMM/Globex Euro FX contract (IMM symbol EC, Globex symbol 6E, contract size ⬠125.000) $ 500 represent a 40 tick ($ 12.50/tick) move or just 20 ticks for 2 contracts - nothing special for a contract that regularly ranges 40 to 100 ticks on a daily basis.
http://www.cme.com/products/currency/products_currency_eurofx.cfm
Quote from CMBFX:
Although it is possible to day trade for profit, the bid/ask spread involved makes it necessary to trade larger lots to reach the $500 level referred to above.
At the IMM/CME you pay a broker commissions, plus the spread, usually 2-3 points. On FX you pay the spread in and out. Basically amounts to the same transaction costs.
but are the futures and spot forex the same, from a backtesting perspective? for one, forex doesn't gap.