Jeff Greenstein

Jeff Greenstein is an American investment manager and entrepreneur based in Seattle, Washington. He began his financial career as a consultant at Merrill Lynch in 1984. After three years at Merrill Lynch, Jeff became President of Behar Greenstein Inc., where he oversaw option trading on the Chicago Board Options Exchange. From there, Jeff moved to Oppenheimer & Co., where he served as Vice President of the Institutional Derivatives division through 1989.

In 1989 Jeff co-founded a relative value hedge fund group called Greenstein Rosenthal where he served as CEO through 1993, at which time he co-founded Quellos Group, LLC. Jeff Greenstein was the CEO of Quellos—a global alternative investment management firm—through 2007. At this time Quellos was acquired by BlackRock for over $1 billion. Since then, Jeff has worked as the President of YIS Capital, a Seattle-based diversified private investment firm.

Jeff’s longstanding involvement and passion in contemporary art were the drivers behind his co-founding of the Greenstein Lab-- a unique space in Seattle designed to exhibit and promote contemporary artists and their works. Additionally, Jeff is co-founder of the Greenstein Family Foundation and oversees philanthropy initiatives with his wife, Judy.

The Greenstein Family Foundation is driven by the guiding principle of Tikkun Olam—a core principle of Judaism defined by acts of kindness performed to make the world a better place. By driving meaningful change in areas that they feel most passionate about, Jeff and Judy hope to set a good example for their four children and inspire others to give back.

Jeff Greenstein’s commitment to humanitarianism was instilled at an early age. He has has given back to the community in significant ways and this passion continues to drive his business and philanthropy endeavors.

Jeff enjoys spending time with family and friends, and staying active with golf, skiing, and other outdoor activities. He also enjoys traveling and exploring, especially when seeing art is involved. Throughout all aspects of his life, Jeff Greenstein brings an entrepreneurial spirit, enthusiasm and a desire to collaborate and help others to everything he does.