1 Best APIs for Stock valuation metrics in Nigeria

ValueRay is a financial data API specializing in stock market valuation metrics, fundamental financial ratios, and equity analysis data for global publicly traded companies. Designed for investment application developers, portfolio analytics platforms, and financial research tools, ValueRay provides the quantitative financial data that investors use to assess whether individual stocks are overvalued, undervalued, or fairly priced relative to their earnings, assets, and growth prospects. The core data offering revolves around fundamental valuation ratios that are central to both value investing and quantitative equity analysis. Price-to-earnings (P/E) ratio, price-to-book (P/B) ratio, price-to-sales (P/S) ratio, enterprise value to EBITDA, and forward valuation metrics based on analyst earnings estimates are among the key indicators ValueRay aggregates and provides through its API. These ratios provide a standardized basis for comparing the relative valuation of different companies across industries and markets. Financial ratio data extends into performance metrics including return on equity, return on assets, profit margins, revenue growth rates, earnings per share, and dividend yield. These profitability and efficiency metrics are fundamental inputs into equity research and stock screening. Investment platforms can use ValueRay data to build stock screening tools that filter thousands of global equities down to the subset matching specific fundamental quality and valuation criteria defined by the investor. Earnings data is a critical component for equity valuation. ValueRay provides earnings per share history, earnings surprise data showing how actual results compared to analyst estimates, and forward earnings estimates where available. Earnings surprises are particularly important market moving events — companies that consistently beat expectations typically see positive stock price momentum, while companies that miss expectations experience the reverse. Nigerian investors tracking international stocks through platforms like Bamboo and Trove can use this earnings context to better understand the fundamental drivers of price movements in their portfolios. Market capitalization data classifies companies by size across large-cap, mid-cap, and small-cap tiers, enabling filtering and analysis by company size. Sector and industry classification data organizes companies into standard industry groups, enabling sector-level analysis and comparison. Nigerian investors who want to understand how their portfolio is allocated across different sectors and company sizes can use this classification data for portfolio construction and risk assessment purposes. Historical fundamental data allows tracking how valuation ratios and financial metrics have changed over time for individual companies. This time series perspective on fundamentals is important for assessing whether a company's current valuation is high or low relative to its own historical norms, not just cross-sectional comparisons with peers. A stock with a currently elevated P/E ratio may be less concerning if the company's historical P/E has consistently been high due to above-average growth expectations. For the Nigerian investment market specifically, growing numbers of Nigerian retail and institutional investors are allocating portions of their portfolios to US and global equities through regulated investment platforms. As Nigerian investor sophistication grows, demand for fundamental financial data rather than just price charts is increasing. ValueRay provides the data layer that investment platforms need to satisfy this demand by displaying valuation context alongside price data. The API is available through a freemium model allowing developers to access core features on a free tier, with paid plans unlocking higher data volumes and additional premium data endpoints. Authentication uses standard API key headers with JSON response format. Nigerian developers building investment analytics tools can integrate ValueRay to deliver the fundamental data insights that differentiate serious investment platforms from basic price tracking applications.