13F quarter-over-quarter position changes API

Find a fund's two most recent SEC 13F-HR filings (keyless EDGAR), parse both information tables, and diff them by CUSIP into new buys, full exits, increased and decreased positions. The value-add is the QoQ diff — wave-1 finance-13f only lists current holdings; this shows what the manager actually changed last quarter. Answers 'what did Berkshire buy last quarter', '13F changes for this fund', 'new positions vs exits', 'what did this manager sell'.

Price$0.01per request

MethodPOST

Route/v1/finance/13f-changes

StatusLive

MIME typeapplication/json

Rate limit60/minute

Cache3600s public

finance13fsecedgarholdingschangesinstitutionalqoq

API URLhttps://x402.hexl.dev/v1/finance/13f-changes

Integration docs

Example request

{
  "cik": "0001067983"
}

Example response

{
  "cik": "0001067983",
  "manager": "BERKSHIRE HATHAWAY INC",
  "currentFilingDate": "2025-05-15",
  "priorFilingDate": "2025-02-14",
  "currentPositions": 38,
  "priorPositions": 40,
  "newBuyCount": 2,
  "exitCount": 4,
  "increasedCount": 3,
  "decreasedCount": 6,
  "newBuys": [
    {
      "cusip": "023135106",
      "issuer": "AMAZON COM INC",
      "value": 1300000,
      "shares": 10000
    }
  ],
  "exits": [
    {
      "cusip": "459200101",
      "issuer": "INTL BUSINESS MACHINES",
      "value": 800000,
      "shares": 5000
    }
  ],
  "increased": [
    {
      "cusip": "037833100",
      "issuer": "APPLE INC",
      "value": 174300000000,
      "shares": 915560382,
      "priorShares": 905560382,
      "sharesDelta": 10000000
    }
  ],
  "decreased": [
    {
      "cusip": "060505104",
      "issuer": "BANK OF AMERICA CORP",
      "value": 26400000000,
      "shares": 766307567,
      "priorShares": 1032852006,
      "sharesDelta": -266544439
    }
  ]
}

Input schema

{
  "type": "object",
  "required": [
    "cik"
  ],
  "properties": {
    "cik": {
      "type": "string",
      "examples": [
        "0001067983"
      ]
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}