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Firm Size and Corporate Investment

Vito Gala

The Wharton School

Brandon Julio

Lundquist College of Business, University of Oregon

September 12, 2016

We provide robust empirical evidence of size effects in corporate investments. Small firms have significantly higher investment rates than large firms, even after controlling for standard empirical proxies of firm real investment opportunities and financial status, including Tobin’s Q and cash flow. Firm size is at least as important as Tobin’s Q and cash flow, both economically and statistically, in explaining variation in corporate investments. Unlike the cash flow effect, however, the size effect is robust to measurement error in Tobin’s Q. Contrary to common wisdom, the empirical evidence suggests that firm size improves the measurement of firms’ real investment opportunities rather than reflecting differences in firms’ financing frictions. Using simulated method of moments, we estimate a neoclassical model of investment and show that technological decreasing returns to scale, along with measurement error in Tobin’s Q, replicates successfully the empirical evidence on size effects.

Number of Pages in PDF File: 54

Keywords: Corporate Investment, Size Effects

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Date posted: March 19, 2011 ; Last revised: September 14, 2016

Suggested Citation

Gala, Vito and Julio, Brandon, Firm Size and Corporate Investment (September 12, 2016). Available at SSRN: https://ssrn.com/abstract=1787350 or http://dx.doi.org/10.2139/ssrn.1787350

Contact Information

Vito D. Gala
The Wharton School ( email )
The Wharton School
3620 Locust Walk
Philadelphia, PA 19104
United States

Brandon Julio (Contact Author)
Lundquist College of Business, University of Oregon ( email )
1280 University of Oregon
Eugene, OR 97403
United States
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