Spirit Airlines Inc Price to Book Ratio (P/B) is 0.40 on June 03, 2024, a -64.50% change year over year. The price to book ratio compares the market price per share of a company's stock to its book value per share. It is calculated by dividing the market capitalization by the shareholders' equity minus treasury stock, divided by the number of outstanding shares. This ratio provides insights into how the market values a company relative to its book value. A ratio above 1 indicates the market values the company more than its book value, suggesting positive market sentiment.