Friday's top analyst upgrades and downgrades included Advanced Micro Devices, Apple, Best Buy, Costco, Intel, Kansas City Southern, Nikola, Plug Power and Salesforce.com.
Tuesday's top analyst upgrades and downgrades included Avis Budget, Bloom Energy, Cisco Systems, Enphase Energy, Fuel Cell Energy, Goldman Sachs, Nike, Plug Power, Sunrun, Twilio and Zoom Video Communications.
Monday's top analyst upgrades and downgrades included Best Buy, Chipotle Mexican Grill, Exxon Mobil, GameStop, Match, Plug Power, Qualcomm and Tesla.
24/7 Wall St. looks at some big analyst calls that we have seen so far on Tuesday, including Booking, Expedia, FuelCell, Plug Power, Roku and more.
Fuel cell maker Plug Power announced Tuesday that it is restating financial statements for the past three years. The stock has taken the predictable beating.
Paul Ausick Wednesday's top analyst upgrades and downgrades included Amazon.com, Charter Communications, Hershey, McDonald's, Plug Power, Seagate Technology, Starbucks and Virgin Galactic.
Tuesday's top analyst upgrades and downgrades included Akamai Technologies, Beyond Meat, Broadcom, Dow, Morgan Stanley, Plug Power, TripAdvisor and Zoom Video Communications.
Monday's top analyst upgrades and downgrades included Apache, CME, Cree, On Semiconductor, Pioneer Natural Resources, Plug Power, Sony and Wayfair.
Fuel cell maker Plug Power's stock is getting pummeled after the company reported negative revenue in the fourth quarter and for the full year. Are things really that bad?
Paul Ausick Our earnings preview for Wednesday afternoon and Thursday morning includes a COVID-19 vaccine maker, a chipmaker and a company that designs and builds hydrogen fuel cells.
Wednesday's top analyst upgrades and downgrades included Beyond Meat, Comcast, ConocoPhillips, Kohl's, Plug Power, 3M and SBA Communications.
U.S. equities posted big gains again last year and that affected profits for short sellers. Still, there were some big winners for short sellers last year.
As share prices for alt energy stocks continue to soar, short sellers are not shy about betting against the shares.
Tuesday's top analyst upgrades and downgrades included Aflac, Commercial Metals, ConocoPhillips, Nio, Occidental Petroleum, Royal Dutch Shell, Target and Wells Fargo.
Hydrogen fuel cell maker Plug Power has received a $1.5 billion investment from South Korea's SK Group to speed-up the growth of Asia's hydrogen market.
Paul Ausick 
