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TrimTabs Investing: Using Liquidity Theory to Beat the Stock Market


Praise for TrimTabs Investing

"Charles Biderman, a savvy and battle-scarred veteran of the investment wars, has fashioned an intriguing approach to making money in the stock market that adroitly avoids both heavy-breathing speculation and the standard Wall Street practices that enable investors, big and small, to lose money in good markets as well as bad. Aimed at the sophisticated investor (which may or may not be an oxymoron), the book is written in blessedly straightforward prose and is a worthwhile read for anyone with an urge to have a fling at investing."
—Alan Abelson, Barron's

"Since the days of Joseph and Pharaoh, it has been axiomatic that the size of the grain harvest affects the level of grain prices; but today's investors have been slow to appreciate the fact that the supply of stock shares significantly determines the level of stock prices. Biderman's long overdue book outlines the theory and evidence behind 'Trading Float,' the actual—and exploitable—power behind major moves in the stock market."
—Paul Montgomery CEO and CIO of Montgomery Capital Management

" 'Trade as corporate execs do, not as they say.' Charles Biderman has built an impressive list of hedge fund clients from this essential insight, and this book does a great job explaining exactly how retail investors can incorporate it into their investing."
—Eric Zitzewitz Assistant Professor of Economics Stanford Graduate School of Business

"Charles Biderman is a smart thinker, clear writer—and he offers here some very interesting ideas. This book is for the little guy who enjoys reading about money and economics, even if he doesn't adopt the strategies offered here; and for the professional or sophisticated investor, who, to a greater or lesser degree, just might."
—Andrew Tobias author of The Only Investment Guide You'll Ever Need

CHARLES BIDERMAN is the founder and President of TrimTabs Investment Research. Born in New York City, he earned a BA from Brooklyn College and an MBA from Harvard Business School. He began his career as Alan Abelson's assistant at Barron's from 1971 to 1973. After correctly predicting the collapse of real estate investment trusts, he became a successful real estate entrepreneur. He founded TrimTabs in 1990 to provide portfolio managers and market strategists with unique investment insights. He is frequently quoted in the financial media, including the Wall Street Journal, Barron's, CNBC, and Bloomberg.

DAVID SANTSCHI is an editorial consultant and copy editor with TrimTabs Investment Research. Born in Cincinnati, he earned an AB in history magna cum laude from Davidson College and an MA in history from the University of Wisconsin–Madison. Currently, he is a doctoral candidate in early modern European history at the University of Wisconsin–Madison.

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Chapter 1. A Tale of Fortune Lost.

Chapter 2. The Genesis of Liquidity Theory.

Chapter 3. The Principles of Liquidity Theory.

Chapter 4. The Building Blocks of Liquidity Analysis.


Chapter 5. Demolishing the Cult of Earnings.

Chapter 6. The House: Secret Corporate Power.

Chapter 7. The Players: Buying, Selling, and Borrowing.


Chapter 8. The Bull Market and the Bubble.

Chapter 9. The Aftermath.

PART FOUR: Liquidity Theory in Action.

Chapter 10. Swinging for Singles: Lower-Risk Strategies.

Chapter 11. Swinging for the Fences: More Aggressive Strategies.


Chapter 12. Managing Difficulties.

Chapter 13. New Applications.

Chapter 14. How Liquidity Could Save the Markets.

Appendix: Historical Liquidity Data.

About the Authors.