Position-level delta between two quarters for one institutional manager (CIK). Without query params: latest 2 quarters from the manifest (most-recent vs previous). With from_quarter + to_quarter: both stems validated against the manifest. Composite diff key is (cusip, put_call, title); multiple INFOTABLE rows with the same key but different investment_discretion / voting / co-manager are aggregated by sum(value)+sum(shares) before diff. filer_status_* is filed or not_filed per quarter - useful for spotting deregistration or new filings. 409 when manifest has <2 quarters and no params provided; 404 when CIK absent from BOTH stems.
x-api-key: ********************curl --location 'https://sugra.ai/api/v1/sec/13f/1067983/changes?from_quarter=undefined&to_quarter=undefined' \
--header 'x-api-key: <api-key>'{
"data": {
"cik": "string",
"manager_name": "string",
"from_stem": "string",
"to_stem": "string",
"filer_status_from": "filed",
"filer_status_to": "filed",
"positions_added": [
{
"issuer": "APPLE INC",
"title": "COM",
"cusip": "037833100",
"figi": "string",
"value_usd_thousands": 0,
"shares": 0,
"shares_type": "SH",
"put_call": "string",
"investment_discretion": "SOLE",
"voting_sole": 0,
"voting_shared": 0,
"voting_none": 0,
"accession": "0002085853-26-000289",
"period_of_report": "31-DEC-2025",
"other_manager_cik": "string",
"other_manager_name": "string",
"other_manager_seq": 0
}
],
"positions_removed": [
{
"issuer": "APPLE INC",
"title": "COM",
"cusip": "037833100",
"figi": "string",
"value_usd_thousands": 0,
"shares": 0,
"shares_type": "SH",
"put_call": "string",
"investment_discretion": "SOLE",
"voting_sole": 0,
"voting_shared": 0,
"voting_none": 0,
"accession": "0002085853-26-000289",
"period_of_report": "31-DEC-2025",
"other_manager_cik": "string",
"other_manager_name": "string",
"other_manager_seq": 0
}
],
"positions_changed": [
{
"cusip": "string",
"title": "string",
"put_call": "string",
"value_usd_thousands_from": 0,
"value_usd_thousands_to": 0,
"value_usd_thousands_delta": 0,
"shares_from": 0,
"shares_to": 0,
"shares_delta": 0,
"raw_row_count_from": 0,
"raw_row_count_to": 0
}
]
},
"meta": {
"endpoint": "/api/v1/fred/us/cpi",
"data_time": "2026-04-16T14:30:00Z",
"response_time": "2026-04-16T14:30:12Z",
"provider": "Sugra API v1.0.1",
"source": "string",
"attribution": "string",
"fallback_used": true,
"fallback_chain": [
"string"
],
"cached": true,
"stale": true
}
}