The Greenspan Put is the nickname given to the policies of former Fed Chairman Alan Greenspan that stopped the stock market from falling too far.
Essentially, the Greenspan put is a variation of the Fed put.
The Greenspan Way did not involve a specific trading strategy, so there is no way to quantify the effectiveness of such a concept.
Historical review of price action after each Greenspan put confirms the market’s confidence that the Fed will continue to support stock markets going forward.