In 2006, an investor put $1,000 into Costco; 20 years later, the stake had grown to about $31,240 with dividends reinvested

If someone had put $1,000 into Costco stock 20 years ago and left it alone, the result would be surprisingly large. With dividends reinvested, that investment would have grown to about $31,240, based on the total-return figure cited in the source. That represents a gain of roughly 3,024% over the period.

$1,000 in Costco Stock 20 Years Ago: Here’s the Return

Costco has never depended on selling products at big markups. Its approach is different. The company keeps prices competitive and relies heavily on customers continuing to pay for memberships.

That membership income matters because it gives Costco a recurring source of revenue. Customers aren't simply walking into a warehouse once and buying something. The membership model gives them a reason to keep coming back.


The company has built its retail operation around keeping prices attractive while making the membership valuable enough for shoppers to renew.

The scale of the business has also grown considerably. Costco reported $65.98 billion in sales in the first quarter of fiscal 2026 alone. That's quarterly sales, not a full-year figure.

Dividends added to the long-term result

Costco isn't a stock investors typically buy for a large dividend. The payout is relatively modest compared with the share price. Management had raised the annual dividend to $5.88, while the stock price cited in the source was $956.32. That worked out to a forward yield of about 0.61%.

Still, a small dividend can matter when it is reinvested over many years. Each payment buys additional shares or fractions of shares, which can then participate in future gains.

In this case, the dividend wasn't the main reason the original $1,000 became more than $31,000. The much bigger factor was the stock's long-term appreciation.

This is the part that can get lost when looking at a 20-year return. The calculation shows what happened in the past. It doesn't tell investors what will happen next. Costco is now a much more established company, and expectations around its performance are high. That can make the stock harder to evaluate.

A company can continue producing solid results and still see its shares fall if investors were expecting something better. The source points to a recent example. Costco posted earnings that was solid in most respects, yet the stock fell about 4% the following day.