Prominent high-yield currencies were down in early trading on Wednesday (October 21st) after a bout of profit taking put an end to the stock market rally in Asia.According to Reuters data, the technology sector bore the brunt of the selloff, although Asian indexes as a whole stayed close to the 15-month highs witnessed earlier this week.Ahead of the opening of foreign exchange markets in Europe, the New Zealand and Canadian dollar both lost ground as the profit taking extended into currencies, while traders also adjusted their positions on the pound after a period of strengthening.Sue Trinh, currency strategist at RBC Capital in Sydney, told Reuters that the Canadian dollar had also been hurt by statements from the Bank of Canada (BoC) which stymied hopes for an early interest rate hike.The central bank warned that a stronger loonie had the potential to expunge the signs of recovery seen in the country in recent weeks."The BoC's commitment to keep rates low until well into next year weighed on rest of the (growth) proxies," said Ms Trinh.