Engineering the Bull: How Share Buybacks Inflated the Longest Rally in History - Part 2

If you have not yet read yesterday's blog post, please read it before continuing here.

IV. Incentives, Beneficiaries, and the Capital Allocation Question

Understanding why buybacks persist requires following the incentive structure. C-suite compensation is overwhelmingly equity-linked - stock options and restricted share units dominate senior executive pay packages across the S&P 500. When EPS rises and share price follows, executives are richly rewarded. Buybacks are among the most reliable mechanisms to engineer both outcomes without the execution risk of organic growth investment.

Critics argue this creates a fundamental misalignment: capital that could fund R&D, workforce development, or productive capex is instead directed toward financial engineering. The data offers some support. During peak buyback years (2014-2019), aggregate S&P 500 capex as a percentage of revenue declined, while buyback spend accelerated. Whether this represents optimal capital allocation or a systematic underinvestment in real productive capacity remains a contested question - but it is one that matters for long-run earnings quality.

The distributional dimension is also relevant for macro practitioners. Buybacks disproportionately benefit shareholders - a subset of the population concentrated at the upper end of the wealth distribution. By suppressing volatility and engineering price appreciation, the buyback era has contributed to a sustained divergence between financial asset performance and underlying economic conditions - a divergence visible in the persistent gap between equity market returns and median wage growth.

V. Policy Pushback and the Road Ahead

The political environment around buybacks is evolving. The Inflation Reduction Act (2022) introduced a 1% excise tax on net share repurchases - a modest but symbolically significant intervention. Further restrictions have been proposed across the political spectrum, ranging from mandatory holding periods on repurchased shares to outright caps tied to workforce investment thresholds.

For market participants, the more immediate consideration is structural. Higher-for-longer rates have permanently altered the cost calculus for debt-funded buybacks. Investment-grade spreads remain elevated relative to the near-zero environment of 2012-2021. As a result, the era of near-costless financial engineering may be structurally challenged, not merely cyclically paused.

If buyback volumes normalize lower - whether due to cost, regulation, or shifting board priorities - the equity market loses one of its most consistent sources of non-fundamental demand. What fills the void matters. Passive flows and systematic strategies have stepped into the liquidity provision role to some degree, but they are inherently price-agnostic in ways that corporate buybacks, with their price-support reflexivity, are not.

Conclusion: A Structural Bid, Not a Free Market

The bull market of the past 15 years was not purely a story of American corporate dynamism or Fed-engineered reflation. It was also, in meaningful part, the product of a decade-long, trillion-dollar structural bid - built by the companies themselves, financed by cheap debt, incentivized by equity-linked compensation, and enabled by a single regulatory rule change in 1982.

For practitioners, the implication is clear: understanding equity market structure requires accounting for buybacks not as a peripheral factor, but as a first-order force in price formation. As that force evolves - whether through rising rates, regulatory change, or shifting corporate priorities - so too will the character of the markets it helped create.

The bull was engineered. The question now is who - or what - holds the reins.