(Updates share prices)
MEXICO CITY, Dec 21 (Reuters) - Shares in Telesites , the Mexican wireless transmission towers firm spun off from billionaire Carlos Slim's telecoms giant America Movil , rose in their market debut on Monday.
In afternoon trading, Telesites shares were up 0.79 percent at 13 pesos ($0.76) per share.
America Movil said it would separate its towers from the company after a sweeping sector reform forced it to open up its infrastructure. The Telesites shares form part of Mexico's benchmark IPC stock index.
Shares in America Movil rose more than 6 percent in afternoon trading to 12.76 pesos per share.
$1 = 17.2163 pesos Reporting by Gabriel Stargardter; Editing by Frances Kerry