Form N-PORT API

SEC Form N-PORT fund data API. Every registered fund (mutual funds, ETFs) files a monthly N-PORT portfolio report; this surface serves the parsed corpus: per-fund monthly AUM (net assets — the ETF market-cap concept), the complete holdings table per filing, monthly total returns and investor flows, reverse holder lookup by CUSIP, and a structured cross-sectional screen. All endpoints under /api/v1/nport/. Amendments supersede at ingest, so every response reflects each month's latest accepted filing.

• GETGET method/api/v1/nport/latestMost recent N-PORT filings across all funds
• GETGET method/api/v1/nport/by-series/{series_id}Monthly filing history for one SEC series
• GETGET method/api/v1/nport/by-ticker/{ticker}Monthly filing history for a fund by ticker
• GETGET method/api/v1/nport/{accession}Full single-filing detail (fund info, returns, flows)
• GETGET method/api/v1/nport/{accession}/holdingsThe filing's complete portfolio holdings table
• GETGET method/api/v1/nport/funds/{ticker}/aum-historyMonthly AUM series — the ETF market-cap history
• GETGET method/api/v1/nport/holders-of/{cusip}Reverse lookup: funds holding a security
• POSTPOST method/api/v1/nport/screenCross-sectional fund screen on latest monthly reports