“Someone’s sitting in the shade today because someone planted a tree a long time ago.”
— Warren Buffett
A long-term holding period can change the way a stock is evaluated. Rather than focusing on short-term volatility, a buy-and-hold analysis emphasizes compounding, dividend reinvestment, and the cumulative effect of time. For NiSource Inc. (NYSE: NI), the past 20 years provide a clear example of how total return can build when both share-price appreciation and dividends are allowed to compound.
This review examines what would have happened if an investor had purchased NiSource shares on 09/01/2006 and held them through 08/31/2026, with all dividends reinvested. The exercise highlights not only the ending value of the investment, but also the extent to which reinvested dividends increased share count and contributed to overall return.
NI 20-Year Return Details
| Start date: | 09/01/2006 |
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| End date: | 08/31/2026 | ||||
| Start price/share: | $8.34 | ||||
| End price/share: | $40.92 | ||||
| Starting shares: | 1,199.04 | ||||
| Ending shares: | 2,544.64 | ||||
| Dividends reinvested/share: | $13.23 | ||||
| Total return: | 941.27% | ||||
| Average annual return: | 12.42% | ||||
| Starting investment: | $10,000.00 | ||||
| Ending investment: | $104,094.75 | ||||
What the 20-Year NI Return Shows
Over the period examined, a $10,000 investment in NiSource grew to $104,094.75, assuming dividends were reinvested. That equates to a total return of 941.27% and an average annual return of 12.42%. Put differently, the investment compounded by more than tenfold across two decades.
The result reflects two drivers working together. First, the share price increased from $8.34 to $40.92. Second, dividends provided additional capital that was used to buy more shares over time. That reinvestment matters: the starting position of 1,199.04 shares grew to 2,544.64 shares by the end of the period, meaning a substantial portion of the final value came from owning more shares rather than from price appreciation alone.
[These numbers were computed with the Dividend Channel DRIP Returns Calculator.]
Why Dividend Reinvestment Had Such a Large Effect
NiSource has long been viewed as an income-oriented utility name, and this case study shows why dividend policy can be central to long-term return. Over the 20 years covered here, investors received $13.23 per share in cumulative dividends. In a reinvestment framework, those cash payments did not remain idle; they were converted into incremental ownership.
That process can be summarized in three steps:
- Cash dividends are paid on each share owned.
- Those dividends are reinvested into additional shares.
- The larger share count then generates more dividends in later periods.
This is the core mechanics of dividend compounding. It is especially relevant in slower-growing, capital-intensive sectors such as utilities, where a meaningful portion of shareholder return may come from income rather than rapid multiple expansion.
Yield, Yield on Cost, and What They Mean
Based on the most recent annualized dividend rate of $1.20 per share, NI has a current yield of approximately 2.93% using the ending share price shown above. That is the standard forward-looking income measure most investors monitor.
Yield on cost answers a different question: how large is the current annual dividend relative to the original purchase price? Using the same $1.20 annualized dividend against the 2006 entry price of $8.34 per share produces a yield on cost of 14.39%.
This metric can be useful in illustrating how dividend growth and a favorable entry price can improve the income profile of a long-held position. It should not, however, be confused with the stock’s current market yield, which is based on today’s share price.
A Utility-Sector Context for NiSource
NiSource operates regulated energy infrastructure, with electric and natural gas utility operations that historically have been associated with relatively predictable cash flows compared with more cyclical industries. That business model helps explain why dividends can play an outsized role in the stock’s long-term return profile.
For regulated utilities, total return is often shaped by a combination of rate-base growth, capital investment, allowed returns set by regulators, balance-sheet discipline, and dividend policy. In that context, a 20-year buy-and-hold outcome should be evaluated not only through the lens of stock-price movement, but also through the consistency and reinvestment of distributions over time.
Key Takeaways
- A $10,000 investment in NiSource on 09/01/2006 grew to $104,094.75 by 08/31/2026 with dividends reinvested.
- Total return was 941.27%, equal to an average annual return of 12.42%.
- The share count more than doubled, rising from 1,199.04 to 2,544.64 through reinvestment.
- Cumulative dividends of $13.23 per share were a major contributor to the final outcome.
- At a $1.20 annualized dividend, the current yield is about 2.93%, while yield on cost based on the original purchase price is 14.39%.
The broader lesson from NiSource’s 20-year buy-and-hold record is that patient ownership can produce results that are difficult to appreciate when attention stays fixed on short-term price changes. In income-producing equities, the interaction between dividends, reinvestment, and time can be as important as the stock chart itself.
Another investment principle worth remembering:
“Games are won by players who focus on the playing field, not by those whose eyes are glued to the scoreboard.” — Warren Buffett
