Several major retail brokers including Oanda, Alpari and FXCM have warned their customers about trading conditions next week.

Excerpt from an Alpari email:

“Dear Trader,
This Sunday, on 17 June 2012, the Greek voters will yet again go to the polls, trying to elect a new parliament that would be able to form a functional government. Essentially, it’s a vote between two options: Greece staying in the eurozone, or exiting. Whatever the outcome, please be aware that we may see big gaps when the Forex markets open on Sunday night, followed by high levels of volatility.”

So be extra careful out there next week …