In business research, firm size is both ubiquitous and readily measured. In contrast, complexity, another firm-related construct, is frequently relevant, but difficult to measure and not well defined. As a result, complexity is seldom incorporated in empirical designs. Measures such as the...

The Fama and French (2015) 5-factor model is commonly used to measure the performance of stock return portfolios. Importantly, we find that three of the Fama and French (2015) firm-level characteristics (i.e., size, BV/MV, and profitability) have no significant explanatory power in the...

This paper uses average monthly returns and linear spline regressions to investigate the relation between expected return and firm size during 1980-1994. We find that the average monthly returns are approximately constant across size deciles. The estimated spline regressions vary substantially...