TrimTabs Investment Research is an independent institutional research firm focused on equity market liquidity. The firm was founded by Charles Biderman in 1990.

The key premise of our approach is that stock prices are a function of liquidity—the amount of shares available to buy and the amount of money available to buy them—rather than fundamental value. Like the prices of any tradable good, the prices of stocks are driven by supply and demand.


TrimTabs Investment Research, Inc. (TTIR) is not registered as an investment adviser with the Securities and Exchange Commission (SEC) or any state. It relies on the "publisher exclusion" from the definition of an investment adviser under Section 202(a)(11) of the Investment Advisers Act of 1940 and corresponding state laws. TTIR provides bona fide research services and investment newsletters that are generally available for subscription by the public. It does not provide any personalized advice.


TrimTabs offers the following products and services:


TrimTabs provides daily liquidity data used in trading strategies by some of the world’s largest asset managers.


TrimTabs provides daily analysis of equity market liquidity to institutional investors.


Turk Capital offers managed futures accounts and managed equity accounts based on TrimTabs’ trading models.