Screen filing post-event price performance
/api/v1/public/edgar/screen-performanceAnalyze stock price performance after SEC EDGAR filings. Returns individual filing records with pre-computed price returns at +1, +3, +7, and +30 days after the filing date, plus aggregate statistics (average, median, % negative, best, worst) across all matching filings. Combine company-level filters (sector, industry, market cap, exchange) with filing filters (form type, date range).
Parameters
Query
Comma-separated form types (e.g. "S-1", "10-K,10-Q", "8-K", "S-3,424B5").
Start date filter (YYYY-MM-DD).
End date filter (YYYY-MM-DD).
Filter by sector (e.g. "Healthcare", "Technology").
Filter by industry (e.g. "Biotechnology", "Software - Application").
Filter by exchange (e.g. "NASDAQ", "NYSE", "AMEX").
Minimum market cap in USD.
Maximum market cap in USD.
Sort field (default: filing_date).
Sort direction (default: desc).
Page number, 1-indexed (default: 1).
Results per page (default: 25, max: 100).
Code example
curl -X GET 'https://api.signal8.ai/api/v1/public/edgar/screen-performance?industry=Biotechnology&sortBy=volume&sortOrder=desc' \
-H "X-Api-Key: $SIGNAL8_API_KEY"Request URL
https://api.signal8.ai/api/v1/public/edgar/screen-performance?industry=Biotechnology&sortBy=volume&sortOrder=desc{
"data": {
"filings": [
{
"ticker": "ATEN",
"cik": "0001580808",
"accession_number": "0001580808-26-000026",
"form_type": "8-K",
"filing_date": "2026-04-30T22:00:00.000Z",
"price_at_filing": "26.8500",
"return_1d": "0.0000",
"return_3d": "0.7076",
"return_7d": "3.5382",
"return_30d": "12.2533",
"sector": "Technology",
"industry": "Software - Infrastructure",
"exchange": "NYSE",
"market_cap_computed": "2354340323",
"company_name": "A10 Networks, Inc."
},
{
"ticker": "WASH",
"cik": "0000737468",
"accession_number": "0000737468-26-000096",
"form_type": "8-K",
"filing_date": "2026-04-30T22:00:00.000Z",
"price_at_filing": "31.9400",
"return_1d": "0.0000",
"return_3d": "-2.2229",
"return_7d": "1.2210",
"return_30d": "1.9724",
"exchange": "Nasdaq",
"market_cap_computed": "670727562",
"company_name": "WASHINGTON TRUST BANCORP INC"
}
],
"aggregates": {
"return_7d": {
"count": 5938,
"avg": "1.1288",
"median": "0.1894",
"pctNegative": "44.38",
"best": "566.6667",
"worst": "-99.6206"
},
"return_30d": {
"count": 5908,
"avg": "6.3066",
"median": "0.1376",
"pctNegative": "48.12",
"best": "9900.0000",
"worst": "-99.7374"
}
},
"pagination": {
"page": 1,
"pageSize": 3,
"total": 5949,
"totalPages": 1983
}
}
}