Preferred Stock Fundamentals: Company's financial health, earnings, and dividend payment capacity. If Costamare's financials weaken, affecting dividend payments, the price falls.

Interest Rate Environment: Changes in prevailing interest rates influence preferred stock prices. Rising interest rates generally lead to lower preferred stock prices as fixed dividends become less attractive.

Credit Ratings: Ratings from agencies like Moody's or S&P impact investor confidence. Downgrades signal higher risk, driving the stock price down, and vice-versa.

Market Sentiment: Overall market conditions and investor confidence play a role. A bullish market boosts demand, potentially increasing the price, while bearish sentiment can decrease it.

Company-Specific News: Announcements regarding Costamare's business operations, such as new contracts or major acquisitions, can affect investor perception and the stock price.

Liquidity: The ease with which the stock can be bought or sold impacts the price. Lower liquidity can lead to greater price volatility and wider bid-ask spreads.

Redemption Risk: The possibility of Costamare redeeming the preferred shares at a specific price impacts investor decisions. If redemption seems likely, the price may trade closer to the redemption value.

Inflation Expectations: Rising inflation can erode the real value of fixed dividend payments, potentially decreasing the stock's appeal and price.