David Stephens

Personal portfolio and knowledge management platform.

Portfolio Management
Track investments and analyze performance
Knowledge Library
146 books and highlights
Quotes Collection
73 curated quotes
Featured Quote

"I regard it as a criminal waste of time to go through the slow and painful ordeal of ascertaining things for one’s self if these same things have already been ascertained and made available by others."

Thomas Edison
Featured Highlight

"Markowitz was the founder of the dominant school of portfolio theory, known as mean-variance analysis. Markowitz used statistics to show how diversification—buying a number of different stocks, and n…"

Fortune's Formula: The Untold Story of the Scientific Betting System That Beat the Casinos and Wall Street by
This is a private platform for authorized users only.