Upgrades:
Twitter (TWTR) upgraded to Buy from Neutral at UBS, target raised to $65 from $50
Downgrades:
Apple (AAPL) downgraded to Sector Perform from Outperform at Pacific Crest
eBay (EBAY) downgraded to Neutral from Overweight at Piper Jaffray, targte lowered to $55 from $63
Other:
Apple (AAPL) target raised to $116 from $110 at Barclays