Upgrades:
Microsoft (MSFT) upgraded to Outperform from Market Perform at William Blair
Microsoft (MSFT) upgraded to Buy at Wunderlich; target raised to $70
Downgrades:
Yahoo! (YHOO) downgraded to Hold from Buy at Jefferies
Other:
Apple (AAPL) target raised to $135 from $125 at Cowen
Microsoft (MSFT) target raised to $69 from $62 at BMO Capital Markets
Wal-Mart (WMT) initiated with a Neutral at Piper Jaffray; target $73