According to @QCompounding, Warren Buffett began purchasing Berkshire Hathaway in 1962 at $7.50 per share and one BRK.A share is now worth more than $600,000, an increase of roughly 80,000x over about 63 years (implied ~19.5% CAGR based on these figures; source: @QCompounding on X, Dec 20, 2025). @QCompounding also states they compiled a free 60-page e-book summarizing key learnings from Buffett for investors to study (source: @QCompounding on X, Dec 20, 2025). For trading application, the Berkshire compounding math provides a concrete benchmark to set long-term return targets and holding periods, using the implied CAGR derived from @QCompounding’s figures as a reference point (source: @QCompounding on X, Dec 20, 2025).