Is Costamare, Inc. overvalued or undervalued?

As of 14 November 2025, the valuation grade for Costamare, Inc. moved from fair to expensive, indicating a shift towards overvaluation. The company appears to be overvalued based on its P/E ratio of 3, which is significantly lower than its peers, such as International Seaways, Inc. with a P/E of 9.81 and Star Bulk Carriers Corp. at 18.50. Additionally, Costamare's Price to Book Value stands at 0.46 and its EV to EBITDA is 4.06, both suggesting that the stock may not be priced appropriately relative to its earnings and asset value.
In comparison to the S&P 500, Costamare has shown strong returns, with a year-to-date return of 53.26% compared to the S&P 500's 14.49%. However, over a three-year period, Costamare's return of 44.94% lags behind the S&P 500's 70.17%, which may indicate that while the stock has performed well recently, its long-term growth potential is less favorable. Overall, the combination of low valuation ratios and the recent grade change suggests that Costamare, Inc. is currently overvalued.