The REIT said late Monday it's expecting first-quarter funds from operations, or FFO, between 80 cents per share and 84 cents per share. It expects 2009 FFO between $3.15 per share and $3.45 per share.

On average, analysts polled by Thomson Reuters are forecasting 84 cents per share for the quarter and $3.31 per share for the year.

FFO, which adds such items as amortization and depreciation back to net income, is considered a key measure of strength for real estate investment trusts because it provides a more accurate picture of cash performance.

Shares of the REIT rose 1 cent to $24.70 in midday trading.