The weak peso is complicating transactions involving Mexicancompanies, driving up prices in local currency for acquisitionsabroad or creating an unforeseen bargain for a foreign buyer, withat least one deal being revalued to adjust for the changes.

When Mexico City-based Coca-Cola Femsa agreed, with partnerCoca-Cola Co., to acquire the AdeS soy-based beverage business fromLondon-based Unilever for $575 million in June, the deal was valuedat 10.6 billion pesos. Now the peso-denominated cost is about 9%higher. Like other Mexican public companies, Coke Femsa has atleast some hedges for currency risk, but it has to book itsholdings in pesos for accounting purposes.

Likewise, Grupo Lala said in May that it would buy certain U.S.assets from Laguna Dairy for $246 million. Currency weakness hasadded more than 10% to the peso-denominated price tag for the dairycompany. The deal's dollar price remains unchanged, AlbertoArellano, Lala's chief financial officer, said in an email.