Asset Prices with Overlapping Generations and Capital Accumulation: Tirole (1985) Revisited

Ngoc-Sang Pham and Alexis Akira Toda

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Abstract: We revisit the classic paper of Tirole "Asset Bubbles and Overlapping Generations" (1985, Econometrica), which shows that the emergence of asset bubbles solves the capital over-accumulation problem. While Tirole's main insight holds with pure bubbles (assets without dividends), we argue that his original analysis with a dividend-paying asset contains some issues. We provide a fairly complete analysis of Tirole's model with general dividends such as equilibrium existence, uniqueness, and long-run behavior under weaker but explicit assumptions and complement with examples based on closed-form solutions. Some of the claims in Tirole (1985) require qualifications including (i) after the introduction of an asset with negligible dividends, the economy may collapse towards zero capital stock ("resource curse") and (ii) the necessity of bubbles is less clear-cut.

Date: 2025-01
New Economics Papers: this item is included in nep-dge, nep-fdg, nep-gro and nep-his
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