Frank Grinnell built the Inflection Point Model over two decades of learning what markets consistently miss: the moment a company or sector is about to change direction — and how to position before the crowd notices. His career is defined by the ability to recognize inflection before it becomes consensus.
That career spans Wall Street's most demanding environments. Starting at Lehman Brothers and Citi/Morgan Stanley Smith Barney, Frank built deep expertise in equity sales, trading, and portfolio management before becoming a First Vice President at Morgan Stanley — where he served as sole portfolio manager for a long-only equity fund and earned top producer recognition for the Mountain West Region three consecutive years.
At RBC Capital Markets, Frank served the Colorado Public Employees' Retirement Association — one of the nation's largest pension funds — vaulting RBC's ranking from outside the top fifteen to the top three within eighteen months. As Chief Investment Officer at Centennial State Financial, he oversaw more than $700 million in assets and closed over 90% of new wealth management business, growing firm AUM by $50 million in fifteen months.
He founded Tenzing Capital LLC in 2010, a long-bias equity hedge fund, before launching Grinnell Capital in 2020 — the culmination of a 24-year career built on a single discipline: finding the inflection point first.
Lehman BrothersMorgan StanleyRBC Capital MarketsCIO · $700M AUMTenzing Capital LLC
