SEC API (sec-api.io) vs Similarweb comparison

SEC API (sec-api.io) focuses on Data APIs, Regulatory Filings Monitoring, and Insider Data while Similarweb specializes in App & Website Traffic, Data APIs, and APIs & SDKs. They overlap in 2 categories, so choose based on your preferred workflow and pricing.

Good news—both SEC API (sec-api.io) and Similarweb offer free plans. You can try each platform without commitment and only pay when you need premium features.

Yes, both platforms offer API access for developers and quants who want to build custom integrations or automate their workflows.

Choose SEC API (sec-api.io) if you need Comprehensive API endpoints: query, full-text search, real-time streaming via WebSocket, download/PDF generator, XBRL-to-JSON conversion, and section extractors for 10-K/10-Q/8-K filings., and Specialized form coverage including ADV, insider filings (Forms 3/4/5), 13F, 13D/G, Form 144, IPO registrations (S-1, 424B4), crowdfunding (Form C, Form D), Reg A filings, and fund reports (N-PORT, N-PX, N-CEN).. Go with Similarweb if Website traffic and engagement analytics, including keyword research, referral sources, and a free traffic checker tool., and APIs available in REST and Batch modes: REST delivers JSON responses, while Batch handles large CSV reports. better fits how you invest.

Both cover common asset types. SEC API (sec-api.io) also includes Stocks, ETFs, Mutual Funds, and Funds. Similarweb adds coverage for Other.

SEC API (sec-api.io) offers real-time data feeds, which is essential for active traders. Similarweb uses delayed or end-of-day data, which works fine for longer-term investors who don't need up-to-the-second quotes.

Similarweb supports data exports to CSV, Excel, JSON, PDF, and Image. SEC API (sec-api.io) has more limited export options.