|Founded||New York City, United States (1999 )|
|Founders||Michael W. Sonnenfeldt|
Number of locations
|United States, Canada, and United Kingdom|
Number of employees
TIGER 21 (The Investment Group for Enhanced Results in the 21st Century) is a peer-to-peer learning network for high-net-worth investors founded in 1999 by Michael W. Sonnenfeldt. The company consists of 23 full-time employees and 30 regional chairs who support the company's 500+ members in 29 cities in the United States, Canada, and United Kingdom. These members, who collectively manage approximately $50 billion in investable assets, pay annual membership dues of $30,000.
Michael Sonnenfeldt founded the organization in 1999 after selling his second business. He and the fellow members of a CEO learning group he was involved in formed the core of the first group. The purpose was discussing ideas and concerns in an open, confidential and mutually supportive setting in order to create significant tangible value in their portfolios, and also provide a confidential forum in which to discuss family, social, and philanthropic issues that were affected by their wealth. They called it The Investment Group for Enhanced Results in the 21st Century, from which the name TIGER 21 is derived.
Members come from all sectors of industry: entrepreneurs, CEOs, inventors, and top executives with backgrounds in financial services, real estate, industrial and consumer goods, legal services, entertainment, and medicine. Some have exited their careers, while others continue to be immersed in their existing jobs and businesses.
The group's experience centers on improving members' investment acumen through critique and coaching, as well as exploring common issues of wealth preservation, estate planning and family dynamics.  The core of the activities is confidential group meetings managed by professional facilitators.
A distinguishing feature of the meetings is the Portfolio Defense segment. Approximately once a year, each member is required to present their personal investment portfolio for analysis in the context of their stated philosophy, investment criteria and goals. The focus of these sessions is to harness the collective intelligence of the group by identifying potential problems or opportunities 
In addition to monthly group meetings, TIGER 21 hosts several speakers throughout the year at headliner events and an annual conference for members.
The organization has a private website with past presentations and headliner audio files in addition to forums on topics ranging from private placement deal flow to strategic philanthropy to requests for assistance with personal matters. Members also have access to purchasing advisors in collectibles, family services, financial services, technology, transportation, travel and entertainment.
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