London-based traders bought euro calls/dollar puts with strikes at parity last week. The buying spree was initiated by dollar spot falling against the euro because of lower-than-expected National Association of Purchasing Management manufacturing survey figures published on Tuesday. The options had maturities of one-three months. The notional sizes were between USD20-50 million. One-month implied volatility stayed high amid the rise in spot, rising to 14.7/15% on Wednesday from 13.7%/14.1% the previous Friday. The lower-than-expected data led vol to rise, but traders added that some increase in vol was to be expected anyway. With the new year, players no longer fear time decay from holding options over the holiday season, and there is hence pent-up demand for options, which would lead to vol increasing. Spot rose from USD0.9305 on Friday to USD0.9460 on Wednesday.