“Behavioral finance could be the key to higher returns with less risk.”

  • Co-Founder and Chairman, Zebra Capital Management, LLC
  • Professor Emeritus, Yale School of Management
  • Founder of Ibbotson Associates, now a Morningstar Company

The NYSE® Zebra Edge® II Index

An opportunity for consistent returns using behavioral finance

  • Irrational decisions by investors may add volatility and risk
  • The most popular stocks historically have provided lower returns

Ibbotson’s behavioral finance filtering process

Zebra Equity selection process


The benefit of a rational long-term strategy

The NYSE® Zebra Edge® II Index is designed to identify U.S. large-cap stocks with relatively lower trading activity and volatility. The Index incorporates daily risk-control measures aimed at delivering more stable performance and reducing exposure to market downturns. The graph below illustrates the hypothetical, back-tested performance over the past 25 years across a variety of market conditions.

Source: NYSE Zebra Edge from 3/14/00 to 12/31/25.

The NYSE® Zebra Edge® II Index was established on 10/6/2020. Performance for the NYSE® Zebra Edge® II Index is back-tested by applying the NYSE® Zebra Edge® II Index strategy, which was designed with the benefit of hindsight, to historical financial data. Certain components of the NYSE® Zebra Edge® II Index were unavailable before 3/14/00. Back-tested performance is hypothetical and has been provided for informational purposes only. Past performance is not indicative of nor does it guarantee future performance. The NYSE® Zebra Edge® II Index could underperform relative to other equity investment strategies. The hypothetical data includes index transaction fees, including a 0.50% per annum index fee.