Colombian Stocks: Ecopetrol, Bolsa de Valores, Grupo Aval

June 15 (Bloomberg) -- The following companies had unusual price changes in Bogota trading. Stock symbols are in parentheses and prices are as of 4 p.m. New York time.

The IGBC Index fell 1.7 percent to 14,030.47, while the Colcap Index declined 1.6 percent to 1,701.98.

Bolsa de Valores de Colombia SA (BVC CB), fell for a sixth day, retreating 1.9 percent to 42 pesos on speculation that Peruvian President-elect Ollanta Humala may withdraw from last month’s trading integration among the Peruvian, Colombian and Chilean bourses, according to Valeria Marconi, a stock analyst at brokerage Correval SA.

Ecopetrol SA (ECOPETL CB), Colombia’s biggest oil company, fell 2.9 percent to 3,835 pesos, the most since November 2010, after the government said it may raise as much as 5.1 trillion pesos ($2.85 billion) by selling a stake in the company next year. The government included the funds from state-controlled Ecopetrol in a financial plan for 2012 submitted to lawmakers.

Grupo Aval Acciones y Valores SA (AVAL CB), Colombia’s largest financial holding company, fell 2.3 percent to 1,255 pesos, the lowest in almost nine months, after Chief Executive Officer Luis Carlos Sarmiento Gutierrez said in an interview that the company seeks to issue $500 million to $1 billion worth of stock in New York, according to Marconi.

To contact the reporter on this story: Blake Schmidt in Bogota at bschmidt16@bloomberg.net

To contact the editor responsible for this story: David Papadopoulos at papadopoulos@bloomberg.net