http://www.portfolio.hu/en/cikkek.tdp?cCheck=1&k=3&i=16174
While international news were mixed after the closing of Hungarian money markets, the forint is apparently mostly affected by a 50-bp Fed rate cut and similar moves by Far Eastern central banks (Hong Kong, Taiwan, China). After market opening on Thursday, the HUF was relatively steady versus the euro and eased some to around 255 from 253 in the morning session. After that the HUF started to act like a donkey on drugs, kicking and running in all directions.
The larges swings observed around 11:14 local time were the consequence of a trader error. A major foreign investment bank put in a bid on EUR/HUF at around 264 instead of 254 and this has caused the abrupt flip-out, a Budapest-based currency dealer told Portfolio.hu.
The easing of the Hungarian currency may also be linked to rumours about an imminent rate cut in Poland that pushed PLN to 3.58 from 3.45 against the euro since market opening (3.5% PLN depreciation intraday), which dragged the forint along, he added.
The forint hit its all-time low versus the single European currency at 286 last Thursday and firmed by more than 13% since then.