Data Quality
Finance-grade APIs live or die on measurable trust. Below are the actual operational numbers for Form4API: how fast filings move from SEC acceptance to the API, how much of the market has price coverage, and how completely post-trade returns are computed. Numbers refresh every 30 minutes from the live backend.
as of Aug 23, 2026 07:11 PM UTC
Ingestion Latency
p95 143s, sample n=25,610
Time from SEC acceptance to API availability. Acceptance-timestamp tracking began June 2026, so the latency sample reflects filings since then.
2 day(s) behind current date — price data updates nightly on market days
Data Coverage
Tickers matched to a daily price series for return computation
13F-HR holdings mapped from CUSIP to a live ticker symbol
Post-Trade Returns Coverage
1,001,600 of 1,330,109 eligible transactions have all matured post-trade horizons computed
Amendment Accuracy
Transactions correctly marked as superseded by a later Form 4/A amendment. Superseded records are excluded from queries by default, so a corrected filing is never double-counted.
All data sourced from publicly available SEC EDGAR filings. Latency is measured from filing AcceptedAt timestamp (UTC) to database insertion. Not investment advice.