Upgrades:

Cisco Systems (CSCO) upgraded to Buy from Hold at Jefferies; target raised to $27.50 from $26

Downgrades:

Twitter (TWTR) downgraded to Hold from Buy at Topeka Capital Markets; target lowered to $15

Twitter (TWTR) downgraded to Sector Weight from Overweigh at Pacific Crest

Visa (V) downgraded to Neutral from Buy at BofA/Merrill

MasterCard (MA) downgraded to Neutral from Buy at BofA/Merrill

Other:

Tesla Motors (TSLA) target lowered to $240 from $325 at Credit Suisse; maintain Outperform

Tesla Motors (TSLA) target lowered to $230 from $282 at Robert W. Baird; maintain Neutral

Tesla Motors (TSLA) target lowered to $180 at RBC Capital Mkts

Twitter (TWTR) target lowered to $23 from $34 at RBC Capital Mkts

Twitter (TWTR) target lowered to $15 from $21 at Mizuho

HP (HPQ) target lowered to $11 at RBC Capital Mkts