Yogi Kak

AllianceBernstein LP (AB) is a SEC-registered investment advisor and mutual fund manager headquartered in Nashville, Tennessee. Founded in 2000, the firm is owned by Equitable Financial Life Insurance Co., ultimately held by Equitable Holdings, Inc. (NYSE: EQH). AB provides investment advice to investment companies, pension and profit-sharing plans, banks and thrift institutions, trusts, estates, government agencies, charitable organizations, individuals, corporations and other business entities.

Siemens Corp. manufactures electrical hardware and software for the communication, power, medical and other industries. The company was founded in 1847 and is headquartered in Washington, DC.

Invesco Advisers, Inc. is a SEC-registered investment advisor headquartered in Atlanta, Georgia. They are a subsidiary of Invesco Group Services, Inc., ultimately held by Invesco Ltd. (NYSE: IVZ). The firm was founded in 1986 and previously known as Invesco Institutional NA, Inc. until April 2010 when Invesco Ltd. consolidated the businesses of their US investment advisors (Invesco AIM Advisors, Inc., Invesco AIM Capital Management, Inc., Invesco AIM Private Asset Management, Inc. and Invesco Global Asset Management NA, Inc.) under the name Invesco Advisers, Inc. They provide discretionary and non-discretionary investment advisory services to individuals, institutional and high net-worth clients through separate accounts, wrap fee programs and US registered investment companies and other Commingled Funds.