These are the 15 most profitable companies in Arizona, according to Owler. Owler collects actual revenue numbers for public companies and aggregates thousand of member responses to estimate the revenue of private companies.

1. Avnet

Leader: William J. Amelio, CEO

Estimated revenue: $17.4 billion

2. Republic Services

Leader: Donald Slager, president and CEO

Estimated revenue: $10 billion

3. Western Refining

Leader: Jeff A. Stevens, president and CEO

Estimated revenue: $8.6 billion

4. Banner Health

Leader: Peter Fine, president and CEO

Estimated revenue:  $7.1 billion

5. U-Haul

Leader: Edward J. Joe Shoen, CEO

Estimated revenue: $7 billion

6. PetSmart

Leader: J.K. Symancyk, CEO

Estimated revenue: $6.3 billion

7. Insight

Leader: Kenneth Lamneck, president and CEO

Estimated revenue: $6 billion

8. Best Western

Leader: David Kong, CEO

Estimated revenue: $6 billion

9. Southern Copper

Leader: Oscar Gonzalez Rocha, president and CEO

Estimated revenue: $5.8 billion

10. ON Semiconductor

Leader: Keith D. Jackson, president and CEO

Estimated revenue: $5.5 billion

11. Magellan Health

Leader: Barry M. Smith, chairman and CEO

Estimated revenue: $5.5 billion

12. Sprouts Farmers Market

Leader: Amin N. Maredia, CEO

Estimated revenue: $4.5 billion

13. Amkor Technology

Leader: Stephen D. Kelley, president and CEO

Estimated revenue: $4.3 billion

14. Microchip

Leader: Steve Sanghi, president and CEO

Estimated revenue: $3.9 billion

15. Discount Tire

Leader: Michael Zuieback, CEO

Estimated revenue: $3.8 billion