New Book, TRIMTABS INVESTING, by Charles Biderman, Offers Market-Proven Technique to Improve Investment Returns: Available Now from Online Booksellers.

SANTA ROSA, Calif. -- Highlighting ten years of providing independent investment research, first-time author Charles Biderman introduces his market-proven technique to improve investment returns by following stock market liquidity. TRIMTABS INVESTING is a groundbreaking book that shows what really makes stock prices rise or fall is liquidity -- the number of shares trading and the amount of cash available to buy them.

"Stock prices do not change based on expected future earnings but are determined by changes in liquidity," states Charles Biderman, President of TrimTabs Investment Research. In his new book, Biderman illustrates how investors can make money in all market conditions. "If you suffered steep losses during the bear market of 2000-2002 and you're looking for a smart way back into the stock market, this book is for you."

In TRIMTABS INVESTING, details of Biderman's completely original TrimTabs methodology teach readers to:

--Recognize that the design purpose of the stock market is essentially the same as a casino: to separate the players from their money, yet leave them with a smile so they come back for more.

--Use three crucial factors to determine whether the smart money (public companies and the insiders who run them) and the dumb money (individual investors) are net buyers or net sellers in the stock market.

--Boost returns and reduce risk by selling when liquidity is bearish and buying when liquidity is bullish.

TRIMTABS INVESTING is available now online and will be fully distributed nationwide by May 6th. It is co-authored by David Santschi and published by John Wiley & Sons, Inc., ISBN 0-471-69720-6. With a journalism background, Biderman is a provocative, articulate and entertaining resource with access to satellite broadcasts for television appearances from Wine Country Television (www.winecountrytv.info).

TrimTabs Investment Research is the only independent research service that publishes detailed daily coverage of U.S. stock market liquidity, including mutual funds and Exchange Traded Funds, as well as weekly withheld income and employment tax collections. Founded by Charles Biderman, TrimTabs has provided institutional investors -- including hedge fund managers, market strategists, and portfolio managers -- with trading strategies since 1990. For sample research, subscriptions and further book information, visit www.TrimTabs.com.