The Fed introduced Operation Twist but the lack of other action (or hints at action) combined with a downgrade to the outlook sent the US dollar flying higher. A 100-pip short squeeze in EUR/USD pre-FOMC was wiped out and more as the pair fell from nearly 1.38 to nearly 1.36.

The Fed retained the comment that “Longer-term inflation expectations have remained stable,” a sign that QE3 is not yet on the table. This and the absence of cut in IOER boosted USD/JPY to 76.65 from 76.30 in spite of the fall in stock markets.

Commodity currencies were the big losers on the downgrade to the outlook. AUD and NZD fell around 200 pips on the day (all of it after the FOMC) and USD/CAD traded at the highest since December.