Shares of Chevron fell 1.53% to $101.91. In the news Tuesday, BP ( BP) is in the process of signing a production-sharing agreement with energy company Socar this year regarding the Azeri-Chirag-Guneshli fields, according to Reuters. Chevron is a member of the ACG project. TheStreet Ratings gives Chevron an A grade with a buy rating and a $131.76 price target. Exxon is also a part of the ACG. Its shares declined 1.51% to $82.61. Exxon gets a B+ grade with a buy rating and $102.26 price target from TheStreet Ratings. Caterpillar shares lost 2.49% to $100.99. TheStreet Ratings gives Caterpillar an A grade with a buy rating and a $122.28 price target. The biggest gainers in the index midday were Pfizer ( PFE) and Hewlett-Packard ( HPQ). Pfizer shares rose 1.02% to $22.27. In the news Tuesday, a federal appellate court said that Pfizer can face liability lawsuits from asbestos in insulating products that were made by its subsidiary Quigley, Reuters reported. TheStreet Ratings gives Pfizer an A- grade with a buy rating and $28.18 price target. Shares of HP increased 1.69% to $23.53. TheStreet Ratings gives HP a C+ grade and a hold rating. -- Written by Alexandra Zendrian >To contact the writer of this article, click here: Alexandra Zendrian >To submit a news tip, send an email to: email@example.com. >To follow the writer on Twitter, go to Alexandra Zendrian.