Donald Trump’s 2016 election and his nomination of climate skeptic Scott Pruitt to head the Environmental Protection Agency drastically downshifted expectations about U.S. policy toward climate change. Joseph Biden’s 2020 election shifted them dramatically upward. We study firms’ stock-price movements in reaction to these changes. As expected, the 2016 election boosted carbon-intensive firms. Surprisingly, firms with climate-responsible strategies also gained, especially those firms held by long-run investors. Such investors appear to have bet on a “boomerang” in climate policy. Harbingers of a boomerang appeared during Trump’s term. The 2020 election marked its arrival.

We analyze a firm’s choice between dividends and stock repurchases under heterogeneous beliefs. Firm insiders, owning a certain fraction of equity, choose between paying out cash available through a dividend payment or a stock repurchase, and simultaneously choose the scale of the firm’s project. Outsiders have heterogeneous beliefs about project success and may disagree with insiders. In equilibrium, the firm distributes value through dividends alone, through a repurchase alone, or through a combination of both. In some situations, the firm may raise external financing to fund its payout. We also develop results for long-run stock returns following dividends and repurchases. (JEL G32, G35) Received June 2, 2020; editorial decision November 3, 2020 by Editor Andrew Ellul.