fund.holdings
1 crread-onlyLatest reported 13F equity holdings for a fund (by SEC CIK) — top positions by value, each with its CUSIP and quarter-over-quarter change (new/added/reduced/exited). Public-domain SEC EDGAR data.
Parameters#
| Parameter | Type | Description |
|---|---|---|
cikreq | string | SEC Central Index Key (zero-padded) |
Example call#
bash
curl -X POST https://arkolith.com/api/mcp \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/call",
"params": {
"name": "fund.holdings",
"arguments": {
"cik": "1067983"
}
}
}'REST mirror: GET /funds/{cik}/holdings, metered identically.
Example response#
json
{
"fund": "BERKSHIRE HATHAWAY INC",
"cik": "1067983",
"quarter": "2026-03-31",
"holdings": [
{
"issuer": "APPLE INC",
"cusip": "037833100",
"ticker": "AAPL",
"shares": "300000000",
"value_usd": 75000000000,
"change": "REDUCED",
"pct_delta": -14.29
}
],
"provenance": { "source": "SEC EDGAR 13F", "filing_quarter": "2026-03-31", "license": "public domain" }
}