Cintas shares closed recently at $222.36, and investors are asking whether the company's cash flows justify that price. The stock has returned 112.0% over five years and trades at 43.0 times earnings. The company plans to acquire UniFirst for $5.5 billion, targeting $375 million in annual cost savings. Those savings could lift future cash flows if integration goes to plan. Cintas' free cash flow over the past twelve months was about $2.0 billion. A discounted cash flow model projects it rising to the low $3 billion range by 2030, broadly in line with what the market appears to expect. Views are split. A bullish case sees the stock 11% undervalued on margin gains, while a bearish case sees it 21% overvalued.

Copart's stock fell 16.0% over the five years to November 2026, while Cintas rose 117.9%. Copart beat only 8 of the 32 Diversified Support Services companies compared. Sales growth does not explain the gap. Copart's sales rose 73.3% between 2021 and 2026, against 59.1% for Cintas. Cintas did grow faster over three years, at 8.7% a year on average versus 6.5%. Profit and valuation did. Cintas lifted earnings per share 91.9%, against 59.4% for Copart, and widened its operating margin by 3.9 points while Copart's narrowed by 6.8 points. Investors now pay 44.5 times earnings for Cintas and 20.4 times for Copart, compared with about 35 times for both in 2021. Copart completed its purchase of ACV for about $1.9 billion on October 16, 2026. Its operating margin was 32.0% in fiscal Q4 2026, down from 36.7% a year earlier.

Cintas stock closed at its highest level of the past year on November 4, 2026, leaving it trading at 42.2 times adjusted earnings over the last twelve months. Based on consensus forecasts, it trades at 41.0 times expected fiscal 2027 earnings and 37.1 times fiscal 2028 earnings. Revenue looks within reach. The fiscal 2027 estimate sits inside management's raised range of $12.15 billion to $12.27 billion, and the forecast has fiscal 2028 sales growing 7.5%. Profit margin is the risk. The forecast needs a net margin of 18.8% in fiscal 2028, while Cintas has not reported a twelve-month margin above 17.8% since fiscal 2017. Costs from the UniFirst deal, expected to close in the second half of 2026, could also push reported profit below guidance. Cintas next reports in December 2026.