A professional investment advisor, author and lecturer, Gerald Appel is a recognized expert in the field of technical market analysis.  He is the inventor of MACD, the Moving Average Convergence/Divergence indicator that is used for charting by investors and money managers alike, on major financial websites and in technical analysis software packages.

Over the years Mr. Appel has written numerous articles for publications such as Smart Money, Money Magazine, Barron's, and Stocks and Commodities, and has also published ten books on investment and market timing. Two of his books have been designated the "Investment Book of the Year," by The Stock Trader's Almanac. He has been cited by numerous publications, including The Wall Street Journal, The New York Times, Futures Magazine, Forbes, The Commodity Trader's Consumer Report, Timer Digest, and The Hulbert Financial Digest. Mr. Appel has appeared on Wall $treet Week With Louis Rukeyser and is a regular guest on various financial news networks.

In 1973, Gerald Appel founded Signalert, a registered investment advisory company which handles a half-billion dollars of client assets. He has been managing discretionary client accounts for more than thirty years. His investment style focuses on protecting assets and managing risk.  Portfolios are structured to meet the needs of individual investors.  He is an active trader in stocks, options, ETF's, mutual funds and other securities. His background as a practicing psychotherapist for many years enables him to care for clients with patience and concern.

Along with his son Dr. Marvin Appel, Gerald Appel is the editor of Systems & Forecasts, a newsletter he founded in 1973 that is read by money managers, analysts, and private investors around the world. This semi-monthly publication has been recognized on the Forbes Honor Roll.

He holds degrees from Brooklyn College and NYU Graduate School of Social Service. Gerald Appel is a former practicing psychoanalyst, and an award-winning photographer.