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AmpliPhi Biosciences Corporation, a biotechnology company, focuses on the development of therapies for antibiotic-resistant infections using bacteriophage-based technology. The company is involved in developing AB-SA01 for the treatment of staphylococcus aureus (S. aureus) infections; and AB-PA01 for the treatment of pseudomonas aeruginosa (P. aeruginosa) infections. It holds collaborative research and development agreements with the United States Army Medical Research and Materiel Command for the development of bacteriophage therapeutics to treat S. aureus, E. coli, and P. aeruginosa infections; and Walter Reed Army Institute of Research. The company was formerly known as Targeted Genetics Corporation and changed its name to AmpliPhi Biosciences Corporation in February 2011. AmpliPhi Biosciences Corporation was founded in 1989 and is headquartered in San Diego, California.

CIRCOR International, Inc. designs, manufactures, and distributes flow and motion control products in Europe, the Middle East, Africa, North America, and internationally. The company has a product portfolio of brands serving its customers' demanding applications. It operates through two segments, Aerospace & Defense and Industrial. The Aerospace & Defense segment manufactures and markets control valves, pumps, regulators, fluid controls, pneumatic valves and controls, electro-mechanical controls, electric motors, and other flow control products and subsystems; propeller pumps; actuation systems; MIL-spec butterfly valves and actuators; brushless DC motors; switches; and actuation components and sub-systems. Its products and services are used in the military and defense, commercial aerospace, business and general aviation, and general industrial markets, as well as serves aircraft manufacturers and tier 1 and tier 2 suppliers. This segment offers its products under the CIRCOR Aerospace, Aerodyne Controls, CIRCOR Bodet, CIRCOR Industria, CIRCOR Motors, Hale Hamilton, Leslie Controls, Portland Valve, and Warren Pumps brands. The Industrial segment provides 3 and 2 screw pumps, progressing cavity pumps, specialty centrifugal pumps, and gear metering pumps; automatic recirculation valves; engineered valves; positive displacement pumps; general service control valves; and top and bottom unheading devices and center feed devices for the end-users and original equipment manufacturers, as well as engineering, procurement, and construction companies. This segment offers its products under the Allweiler, DeltaValve, Houttuin, IMO Pump, IMO AB, Leslie Controls, RG Lawrence, RTK, Schroedahl, TapcoEnpro, Tushaco, and Zenith brands. The company markets its solutions directly and through various sales partners to approximately 14,000 customers in approximately 100 countries. CIRCOR International, Inc. was incorporated in 1999 and is headquartered in Burlington, Massachusetts.

The Invesco Variable Rate Preferred ETF (VRP) is an exchange-traded fund that mostly invests in broad credit fixed income. The fund tracks a market-value-weighted index of variable- and floating-rate preferred stocks. VRP was launched on May 1, 2014 and is managed by Invesco.