Catch up on the weekend's top five stories with this list compiled by The Fly:

1. Real estate investment trust MAA (MAA) is nearing an agreement to acquire Post Properties (PPS) in a $4B deal that could be announced Monday, according to the Wall Street Journal.

2. Activist investor Starboard disclosed a 9.9% position in Stewart (STC) after Friday's market close, sending shares of the title insurance and real estate services company higher in after-hours trading. 

3. Several major hedge funds issued quarterly 13F filings late Friday, with David Tepper's Appaloosa Management disclosing a new stake in Western Digital (WDC) and an increased position in Allergan (AGN); Daniel Loeb's Third Point showing a new stake in Facebook (FB) and an exit from Amgen (AMGN); and Nelson Peltz' Trian reporting an exit from Legg Mason (LM) and a stake increase in Mondelez (MDLZ).

4. Boeing's (BA) KC-46 tanker program, long troubled by technical issues and delays, received production approval.

5. Brookdale Senior Living (BKD), E.W. Scripps (SSP), Verifone (PAY) and Becton Dickinson (BDX) saw positive calls in Barron's, while IBM (IBM) and Ecolab (ECL) were discussed more critically.