An investor who is extremely knowledgeable about the markets and has a reputation of making successful investments. These investors are widely known to the investing public for generating double-digit returns.
Taobiz explains Investing Sage
This is not a term that is applied to just anyone - an investing sage must be worthy of such accolades. The most famous investing sage is Warren Buffett, who is sometimes referred to as the "Oracle of Omaha". His highly successful investment strategy has made his shareholders incredibly wealthy.