“When we own portions of outstanding businesses with outstanding managements, our favorite holding period is forever.”
— Warren Buffett
McKesson Corp (NYSE: MCK) provides a useful case study in long-term equity compounding. A hypothetical $10,000 investment made on 10/09/2006 and held through 10/08/2026, with dividends reinvested, would have grown to $212,444.44. That outcome illustrates how a durable business, held across multiple market cycles, can generate substantial total return even when the dividend yield itself remains modest.
McKesson is one of the largest pharmaceutical distributors in the United States, operating in a segment of the healthcare supply chain where scale, logistics, purchasing power, and customer relationships matter. Those characteristics have helped support long-run earnings power and, in turn, shareholder returns. The result shown below is not simply a story of dividend income; it is primarily a story of long-duration capital appreciation enhanced by disciplined dividend reinvestment.
MCK 20-Year Return Details
| Start date: | 10/09/2006 |
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| End date: | 10/08/2026 | ||||
| Start price/share: | $50.97 | ||||
| End price/share: | $930.25 | ||||
| Starting shares: | 196.19 | ||||
| Ending shares: | 228.20 | ||||
| Dividends reinvested/share: | $27.82 | ||||
| Total return: | 2,022.88% | ||||
| Average annual return: | 16.50% | ||||
| Starting investment: | $10,000.00 | ||||
| Ending investment: | $212,444.44 | ||||
The numbers imply that McKesson delivered an annualized total return of 16.50% over the period, converting $10,000 into more than $212,000. On a cumulative basis, that is a 2,022.88% return. [These numbers were computed with the Dividend Channel DRIP Returns Calculator.]
What Drove the Return
The outcome was driven far more by share price appreciation than by starting income yield. That distinction matters. McKesson has not historically been a high-yield stock; instead, it has been a business where total return has depended largely on growth in intrinsic value, earnings generation, capital allocation, and the market’s willingness to assign a higher value to those cash flows over time.
Dividend reinvestment still contributed meaningfully. Over the 20-year span, the position grew from 196.19 shares to 228.20 shares, reflecting the purchase of additional shares through reinvested dividends. The cumulative dividends reinvested totaled $27.82 per original share. Even when current yield is relatively low, reinvestment can incrementally raise share count and enhance compounding over long holding periods.
Dividend Reinvestment and Yield on Cost
Using the most recent annualized dividend rate of $3.76 per share, MCK has a current yield of approximately 0.40% based on the ending share price of $930.25. Measured against the original purchase price of $50.97, that same dividend rate represents a yield on cost of about 7.38%.
Yield on cost is a useful descriptive metric for illustrating dividend growth over time, but it should be interpreted carefully. It helps show how much cash income a long-term holder now receives relative to the original entry price. However, it does not replace current yield or valuation analysis, which remain more relevant for new capital allocation decisions.
Key Takeaways From McKesson’s 20-Year Return
- Long holding periods can magnify the effect of compounding, particularly when returns remain above the broader cost of capital over many years.
- Total return matters more than headline dividend yield alone. In McKesson’s case, capital appreciation was the dominant driver.
- Dividend reinvestment added incremental share accumulation, increasing the ending value of the position.
- Business quality and market structure can matter as much as initial valuation over very long periods, though both remain important.
Why This Example Matters
A two-decade return profile such as this highlights the difference between trading around short-term price moves and owning a business through time. McKesson’s result underscores that some of the strongest long-run outcomes come from companies that compound steadily in essential industries, rather than from stocks that simply begin with the highest yields.
That does not mean future returns will resemble the past two decades. It does mean that examining a stock like McKesson through the lens of total return, dividend reinvestment, and business durability provides a more complete picture than focusing on income metrics alone.
More investment wisdom to ponder:
“The individual investor should act consistently as an investor and not as a speculator.” — Benjamin Graham
