Abstract
A central organizing principle of Anglo-American corporate governance scholarship has been the trade-off between liquidity and control. In his canonical 1991 article, Professor John Coffee argued that liquid securities markets encourage shareholder exit rather than voice, thereby entrenching managerial autonomy and perpetuating the Berle-Means corporation. The rise of institutional blockholders over the subsequent three decades was framed as a reversal of this dynamic: by making exit costly, concentrated ownership would force investors into active governance.
This paper challenges that framing. Drawing on market microstructure evidence and a conceptual framework derived from Hirschman's Exit, Voice, and Loyalty, I argue that the relationship between liquidity and control has not simply inverted—it has reversed its polarity. In contemporary equity markets, characterized by high-frequency trading, algorithmic execution, shortened holding periods, and equity-based managerial compensation, exit itself has become a form of voice. I demonstrate this through three channels: first, the governance-signalling function of real-time price formation; second, the disciplining effect of continuous portfolio rebalancing on managerial behaviour; and third, the feedback loop between secondary market liquidity and the cost of equity capital. When managers are compensated in stock and investment mandates are executed by algorithms, market participants "vote" with every trade. But unlike the shareholder voice imagined by corporate governance reformers, this voice is fragmented, non-deliberative, and indifferent to firm-specific long-term value.
A worked illustration drawn from the FTSE 100—the sustained, silent disciplining of Marks and Spencer's management between 2015 and 2019—demonstrates how the three channels operate in combination, compressing managerial autonomy without any corresponding exercise of institutional voice. The case is not anomalous. It is representative of a structural condition in which the continuous pressure of the secondary market has rendered episodic institutional engagement largely redundant as a disciplinary mechanism. The result is a new form of separation between ownership and control—one that Berle and Means did not anticipate. Control has not returned to shareholders. It has been delegated to execution algorithms, index methodologies, and market structure itself. The paper concludes by examining the regulatory implications of this thesis for the current debates on stewardship codes, equity market structure reform, and the future of the public corporation, with particular reference to the United Kingdom's ongoing Wholesale Markets Review and the Financial Conduct Authority's evolving approach to algorithmic trading.