Apple's stock rose 3.2% to close at $589.53, its best finish since Nov. 1. Year-to-date, the shares are up 45% but they are still a good ways off their 52-week high of $705.07, which dates back to Sept. 21. A bigger factor for the broad market though will be the news of an agreement between the International Monetary Fund and eurozone officials on a plan to cut Greece's long-term debt target. The deal brings Greece a crucial step closer to getting its next round of bailout funds. Meantime, Tuesday's U.S. economic calendar is pretty busy, including durable orders for October at 8:30 a.m. ET; the S&P Case-Shiller home price index for September at 9 a.m. ET; the consumer confidence reading for November at 10 a.m. ET; and the Federal Housing Finance Agency housing price index for September at 10 a.m. ET. Among the few notable headlines late Monday was an agreement for Equity Residential ( EQR) and AvalonBay Communities ( AVB) to jointly purchase the assets of Archstone Enterprise LP, mainly a portfolio of apartment properties, from Lehman Brothers Holdings. The companies put the value of the transaction at $16 billion, which includes the assumption of $9.5 billion in debt. Equity Residential will own 60% of Archstone, while AvalonBay will own 40%. And finally, Dollar General ( DG) shares were rising in late trades following news the Goodlettsville, Tenn.-based discount retailer has been selected to join the S&P 500, replacing Cooper Industries ( CBE), which is being acquired by Eaton Corp. ( ETN). The change is expected to go into effect this Friday. Dollar General shares were last quoted at $50.60, up 2.6%, on volume of more than 475,000, according to Nasdaq.com. Also getting a lift in the extended session was Las Vegas Sands ( LVS), whose board declared a special dividend of $2.65 per share after the closing bell. The dividend is payable on Dec. 18 to shareholders of record on Dec. 10. Shares were jumping 5% to $46.21 after the close. -- Written by Michael Baron in New York. >To contact the writer of this article, click here: Michael Baron.