Benzinga's Top Ratings Upgrades, Downgrades For April 18, 2023 By: Benzinga via Benzinga April 18, 2023 at 11:00 AM EDT Upgrades Canaccord Genuity upgraded the previous rating for Sigma Lithium Corp (NASDAQ:SGML) from Speculative Buy to Buy. The current ... Read More >> Related Stocks: Algonquin Pwr & Util Ares Capital Corp Aterian Inc Bellus Health Inc Bj's Restaurants Inc Blackrock Cptl Invt Brookfield Asset Management Brown & Brown CPI Card Group Chubb Limited Cion Investment Corp Clean Harbors Comcast Corp Compass Inc Cl A Coppernico Metals Inc Core Laboratories Inc Danaher Corp Datadog Inc Cl A Digital Media Solutions Inc Electrameccanica Vehicles Corp. Ltd. - Common Stock Emerson Electric First Solar Global Payments Inc Golub Capital Bdc Helmerich & Payne Heritage-Crystal Inhibikase Therapeutics Inc Krystal Biotech Inc Legalzoom.com Inc Liberty Energy Inc Lxp Industrial Trust Marathon Petroleum Mp Materials Corp NVIDIA Corp Nabors Industries New Mountain Finance Corp Nextier Oilfield Solutions Inc Obsidian Energy Ltd Opendoor Technologies Inc PL Plug Power Inc Powerschool Holdings Inc Cl A Prime Medicine Inc ProSomnus, Inc. - Common Stock Prometheus Biosciences Inc Redfin Corp Rocket Lab USA Inc Runway Growth Finance Corp Satsuma Pharmaceuticals Inc Sigma Lithium Corp Spectrum Brands Holdings Inc Stericycle Sunrun Inc Tyler Technologies Valero Energy Vaxcyte Inc Waste Connections Inc Waste Management Zillow Group Cl C