Arabica coffee futures contracts are experiencing losses on the New York and London stock exchanges due to a stronger dollar and an increase in certified stocks, reaching a two-and-a-half-year high in New York and a two-and-a-half-month high in London. The dollar's rise against the Brazilian currency, which has weakened by almost 9% since December, is also contributing to the price pressure. The harvest in Vietnam is delayed by rain, and the financial market sees the dollar slightly rising against the real, extending gains from the previous week.