v1

latestOpenAPI 3.0.1MIT2026-07-263267128.2 KB
Index Funds

Get ETF / index-fund holdings

Query fund holdings in two directions. Provide exactly one of ticker or holding. ?ticker=SPY returns a fund's constituents and each position's weight (the fund's latest filing by default, or the composition in effect on/before as_of). ?holding=AAPL returns the funds whose latest filing holds that security, sorted by weight.

get/index-funds

Query parameters

tickerstring

The fund's ticker symbol (e.g., SPY). Returns that fund's holdings. Mutually exclusive with holding.

holdingstring

A held security's ticker symbol (e.g., AAPL). Returns the funds whose latest filing holds it. Mutually exclusive with ticker.

as_ofstring date

Only valid with ticker. Returns the fund composition in effect on or before this date (YYYY-MM-DD). Without it, the fund's latest filing is returned.

asset_class'equity' | 'bond'

Only valid with ticker. Filter constituents by instrument type: equity or bond. Omit for all holdings.

limitinteger

The maximum number of rows to return (default: 50, max: 1000).

offsetinteger

The number of rows to skip, for pagination (default: 0).

Response

Index fund holdings response. The shape depends on the query direction: ticker returns a fund header + constituents; holding returns a security header + funds.

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