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latestOpenAPI 3.0.02026-08-2010141507.9 KB

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ETF/MF

Portfolio changes

ETF Pro

Compares the two most recent N-PORT filings and returns holdings that were added, removed, or significantly reweighted (>0.05% portfolio weight change). Useful for tracking portfolio manager decisions and rebalancing activity.

Positions are aggregated per security before comparison, so a holding a fund reports across several lines (separate lots, option strikes) counts once, with its weights summed.

get/api/fund/changes

Query parameters

symbolstring

Fund ticker symbol (ETF or mutual fund). Identify the entity by exactly one of: symbol, cik, cusip, composite_figi, or share_class_figi. At least one is required.

cikinteger

SEC Central Index Key (CIK).

cusipstring

CUSIP identifier (9 characters).

composite_figistring

Composite OpenFIGI identifier.

share_class_figistring

Share-class OpenFIGI identifier.

Response

Portfolio changes between the two most recent quarters

latestDatestring

Most recent report date

previousDatestring

Previous report date

Example response

{
  "latestDate": "2025-12-31",
  "previousDate": "2025-09-30",
  "added": [
    {
      "changeType": "added",
      "cusip": "037833100",
      "name": "Apple Inc",
      "pctVal": 6.82,
      "valueUsd": 4250000000,
      "balance": 18500000,
      "prevPctVal": 6.15,
      "prevValueUsd": 3800000000,
      "prevBalance": 17200000,
      "mappedSymbol": "AAPL"
    }
  ],
  "removed": [
    {
      "changeType": "added",
      "cusip": "037833100",
      "name": "Apple Inc",
      "pctVal": 6.82,
      "valueUsd": 4250000000,
      "balance": 18500000,
      "prevPctVal": 6.15,
      "prevValueUsd": 3800000000,
      "prevBalance": 17200000,
      "mappedSymbol": "AAPL"
    }
  ],
  "reweighted": [
    {
      "changeType": "added",
      "cusip": "037833100",
      "name": "Apple Inc",
      "pctVal": 6.82,
      "valueUsd": 4250000000,
      "balance": 18500000,
      "prevPctVal": 6.15,
      "prevValueUsd": 3800000000,
      "prevBalance": 17200000,
      "mappedSymbol": "AAPL"
    }
  ]
}