US RESEARCH ROUNDUP — BlackRock, Microsoft, TransDigm Group

Oct 15 (Reuters) — Wall Street securities analysts revised their ratings and price targets on several U.S.-listed companies, including BlackRock, Microsoft and TransDigm Group on Thursday. Highlights BlackRock: KBW raises target price to $1,310.00 from $1,290.00 * Microsoft: Jefferies raises target price to $650 from $575 * Morgan Stanley: KBW cuts target price to $230.00 from $250.00 * Murphy USA Inc.: RBC cuts target price to $612 from $619 * TransDigm Group Incorporated: RBC cuts target price to $1,200 from $1,350 Following is a summary of research actions on U.S. companies Stock entries are in alphabetical order. Aecom: RBC cuts target price to $89 from $90 * Air Products: RBC cuts target price to $346 from $360 * Albemarle: RBC cuts target price to $129 from $157 * Albertsons Companies, Inc.: JP Morgan cuts to neutral from overweight * American Tower Corporation: Jefferies raises target price to $208 from $201 * Armstrong World Industries, Inc.: Jefferies cuts target price to $182 from $190 * Axalta Coating Systems Ltd.: JP Morgan resumes with neutral rating; target $33 * Bank of America: Jefferies cuts target price to $60 from $70 * Bank of Am