Among U.S. public firms, technological innovation is concentrated on a small set of large players, with innovation “leaders” having considerably lower systematic risk than “laggards.” To understand this fact, we build a winner-takes-all patent race model and show that a firm’s expected return decreases in its innovation output and increases in that of its rivals. Using a comprehensive firm-level panel of information on patenting activity by fields of technology in 1950–2010, we find strong support for the model’s predictions. Our results highlight that strategic interactions among firms competing in innovation are an important determinant of risk and expected returns. (JEL G12, G31) Received August 6, 2018; editorial decision October 19, 2019 by Andrew Ellul.

We study the role of pyramidal ownership structures in the creation of new firms. Our results suggest that pyramids arise because they provide a financing advantage in setting up new firms when the pledgeability of cash flows to outside financiers is limited. Parent companies supply inside funds to new firms that, due to large investment requirements and low pledgeable cash flows, cannot raise enough external financing. The financing advantage of pyramidal structures is pervasive in many countries, exists regardless of whether new firms are set up by business groups or by smaller organizations, and is an important underpinning of entrepreneurial activity.

We study the implications of creative destruction on asset prices. We develop a general equilibrium model of endogenous firm creation and destruction in which “incremental” innovation by incumbents and “radical” innovation by entrants drive productivity improvements. Firms’ incentives to innovate generate time-varying economic growth and countercyclical economic uncertainty. The model matches key properties of consumption and asset prices, as well as novel facts on the process of creative destruction in the United States obtained using a sample of patents from 1975–2013. We show that the interplay between incumbents and entrants is an important determinant of risks priced in the financial markets.

Following state-level legal changes that increase labor dismissal costs, firms increase their innovation in new processes that facilitate the adoption of cost-saving production methods, especially in industries with a large share of labor costs in total costs. Firms with high innovation ability exhibit larger increases in process innovation and capital-labor ratios, an effect driven by both increases in capital investment and decreases in employment. By facilitating the adjustment of the input mix when conditions in input markets change, innovation ability allows firms to mitigate value losses and is a key driver of their performance.

We study how product market competition affects firms’ ownership structures using a large sample of closely held firms in eighteen European countries. We show that firms operating in more competitive environments have lower inside ownership and that the stakes of their outside shareholders are more dispersed. These results are explained by competition increasing the need to raise external equity and reducing private control benefits. Our findings suggest that, by changing corporate ownership structure, competition mitigates incentive misalignment among shareholders, leading to better firm performance and gains in economic efficiency.

Using a large and unique patent‐merger data set over the period 1984 to 2006, we show that companies with large patent portfolios and low R&D expenses are acquirers, while companies with high R&D expenses and slow growth in patent output are targets. Further, technological overlap between firm pairs has a positive effect on transaction incidence, and this effect is reduced for firm pairs that overlap in product markets. We also show that acquirers with prior technological linkage to their target firms produce more patents afterwards. We conclude that synergies obtained from combining innovation capabilities are important drivers of acquisitions.