fund.holdings.diff
3 crread-onlyQuarter-over-quarter change set for a fund's most recent filing: new positions, adds, reduces, and exits (the signal in 13F).
Parameters#
| Parameter | Type | Description |
|---|---|---|
cikreq | string | SEC Central Index Key |
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.diff",
"arguments": {
"cik": "1067983"
}
}
}'Example response#
json
{
"fund": "BERKSHIRE HATHAWAY INC",
"cik": "1067983",
"quarter": "2026-03-31",
"changes": {
"new": [{ "issuer": "CONSTELLATION BRANDS", "ticker": "STZ", "value_usd": 1200000000, "pct_delta": null }],
"added": [{ "issuer": "OCCIDENTAL PETROLEUM", "ticker": "OXY", "value_usd": 13000000000, "pct_delta": 12.4 }],
"reduced": [{ "issuer": "APPLE INC", "ticker": "AAPL", "value_usd": 75000000000, "pct_delta": -14.29 }],
"exited": [{ "issuer": "HP INC", "ticker": "HPQ", "value_usd": 0, "pct_delta": -100 }]
},
"provenance": { "source": "SEC EDGAR 13F", "license": "public domain" }
}