Costco Wholesale Corp. (NASDAQ:COST)

The financial data reveals a long-term expansion in both market valuation and operational profitability, characterized by a significant acceleration in the price-to-operating profit (P/OP) multiple over the last two decades.

Share Price Trajectory

A consistent upward trend is observed in the share price, which rose from 50.06 USD in 2005 to 942.25 USD by 2026. The growth was relatively steady until 2017, after which a more aggressive appreciation occurred, particularly between 2020 and 2024, where the price surged from 363.02 USD to 909.10 USD.

Operating Profit per Share

Operating profit per share demonstrates steady organic growth, increasing from 3.12 USD in 2005 to 26.37 USD in 2026. This growth has been linear and resilient, showing few significant contractions over the analyzed period, which indicates a consistent ability to scale operational efficiency.

Price to Operating Profit (P/OP) Multiple

The P/OP ratio shifted through three distinct phases. From 2005 to 2017, the ratio remained relatively stable, generally oscillating between 12.67 and 18.09. A period of rapid multiple expansion began in 2018, with the ratio climbing from 21.34 to a peak of 43.38 in 2023. This indicates that the market began valuing each dollar of operating profit at a significantly higher premium. A slight correction is noted in the final two years, with the ratio moderating to 35.73 by 2026.

The divergence between the growth rates of the share price and the operating profit per share explains the expansion of the P/OP ratio. While operating profit grew approximately 8.4 times over the period, the share price increased by approximately 18.8 times, suggesting that investor sentiment and valuation premiums have played a dominant role in the stock's price appreciation in recent years.