Finance Research Repository

Academic papers on trading, investing, and investor behavior.

Curated by Robert Gorak · 8 papers · Last updated June 2026

Key Findings Across the Literature

Market Efficiency
Foundational

The Efficient Market Hypothesis: Fama's Foundational Framework

Eugene F. Fama · 1970

In 89 out of 115 mutual funds studied by Jensen over 1955–1964, net ten-year returns averaged -14.6% below the market line, indicating professional fund managers do not possess information unavailable to the market.

Factor InvestingMarket Efficiency
Foundational

The Fama-French Two-Factor Model: Size and Value Drive Stock Returns

Eugene F. Fama and Kenneth R. French · 1992

Highest BE/ME stocks returned 1.83% per month vs. 0.30% for lowest BE/ME stocks — a 1.53% monthly spread — while market beta showed no reliable relation to average returns over 1963-1990.

Factor Investing
Foundational

The Fama-French Three-Factor Model: Size, Value, and Market Risk

Eugene F. Fama and Kenneth R. French · 1993

A three-factor model adding SMB and HML to the market factor raises R² for 25 size- and BE/ME-sorted stock portfolios from 0.61–0.70 to 0.94–0.97, explaining the cross-section of average returns on NYSE, Amex, and NASDAQ stocks from July 1963 to December 1991.

MomentumMarket Efficiency
Foundational

Momentum Investing: How Buying Winners and Selling Losers Beats the Market

Narasimhan Jegadeesh and Sheridan Titman · 1993

The 6-month/6-month relative strength strategy realizes a compounded excess return of 12.01% per year on average over the 1965 to 1989 period.

Behavioral FinanceTrading Psychology
Foundational

Prospect Theory: How Losses Loom Larger Than Gains

Daniel Kahneman and Amos Tversky · 1979

82% of subjects preferred a certain 2,400 over a gamble with a .33 probability of winning 2,500 (Problem 1), while 83% reversed that preference in the structurally equivalent Problem 2, violating expected utility theory.

Portfolio TheoryRisk Management
Foundational

Mean-Variance Optimization: Markowitz's Framework for Portfolio Construction

Harry Markowitz · 1952

The E-V rule implies investors should hold diversified portfolios on the efficient frontier — minimizing variance for a given expected return or maximizing return for a given variance.

Portfolio TheoryRisk Management
Foundational

The Capital Asset Pricing Model: Sharpe's Theory of Risk and Return

William F. Sharpe · 1964

In equilibrium, expected asset returns are linearly related to their systematic risk (beta), with assets that move with the market promising higher returns than those unaffected by economic activity.

Behavioral FinanceTrading Psychology
Foundational

Three Heuristics That Distort Probability Judgment

Amos Tversky and Daniel Kahneman · 1974

Anchoring caused subjects given a starting point of 10 to estimate 25 percent African countries in the UN, while those given 65 estimated 45 percent — a 20-point spread from an arbitrary number.