Reinvestment Yield Compression

The framework reads reinvestment yield as the rate of return generated by capital deployed back into the business — primarily measured through return on tangible capital across the trailing 5-year window. The bullish read holds when reinvestment yields exceed cost of capital across multiple cycles, indicating the company's compounder thesis is operationally validated. The bearish read fires when reinvestment yields compress below cost of capital across multiple quarters, indicating the company's continued capital deployment is destroying rather than creating value. Tesla's recent cycles demonstrate the pattern as return on tangible capital compressed from 28% (2022) to 11% (2025).

The framework reads reinvestment yield as the structural test for whether continued capital deployment supports the compounder thesis. Compounder theses depend on the company's ability to deploy retained earnings at returns above cost of capital — without this capability, the retained earnings would create more shareholder value through capital return than through reinvestment. The pattern fires when historical reinvestment yields that supported the compounder thesis compress materially, indicating the operational conditions producing the historical returns no longer hold. The discriminator is the trajectory across multiple cycles rather than single-quarter readings.

The framework reads three operational signals across the trailing 5-year window. Return on tangible capital trajectory relative to cost of capital. Capital expenditure efficiency (revenue generated per dollar of capex three years forward) trajectory. Operating margin trajectory in segments receiving the largest capital deployment. Companies showing sustained compression across all three signals are firing the reinvestment yield compression pattern at moderate or strong magnitude. The pattern fires alongside composite reads on capex outrunning FCF and broader capital allocation discipline questions. The framework's per-ticker reads surface the composite reads simultaneously.

The framework reads falling return on capital as the structural test that previously-supportive compounder theses are facing operational deterioration. The decline can reflect competitive pressure compressing returns on the existing capital base, reinvestment in lower-return projects as higher-return opportunities exhaust, or operational execution failures producing lower returns on continued investment. The discriminator across these explanations is the composite read alongside the return decline. Companies showing return decline alone often face cyclical normalization; companies showing return decline alongside composite firings on operator quality face structural deterioration. The framework's discipline is reading the composite rather than the single metric.

The framework does not produce sell signals on single-pattern firings. The diagnostic question is whether reinvestment yield compression is firing alone or alongside composite archetypes — capex outrunning FCF, capital allocation discipline questions, operator quality concerns. Single-pattern firings often resolve through normal operational paths with appropriate sizing reduction. Composite firings — when reinvestment yield compression fires with multiple reinforcing patterns — produce the multi-quarter compounder thesis breaks the framework's case library documents. The framework's Interrogator surface walks through the composite read for any compounder thesis before exit decisions.