allocation portfolios data fund flowsu.s . equity floatglobal equity floatmacroeconomic data media contact 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 . request trial subscription 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 data trimtabs provides daily liquidity data used in trading strategies by some of the world s largest asset managers . research trimtabs provides daily analysis of equity market liquidity to institutional investors . managed accounts turk capital offers managed futures accounts and managed equity accounts based on trimtabs trading models .