cbre group inc said its board has approved a new plan to repurchase up to 2 billion in shares over the next five years the dallasbased commercial real estate services and investment firm said that this year through nov 19 it had bought back roughly 2213 million worth of shares or about 25 million shares for an average price of around 8940 apiece as of nov 19 it had 1286 million remaining under the previous stock buyback program it will still be able to buy back shares under the existing program it said