N-PORT fund portfolio holdings API

What is in it

• ·A cross-filing holdings stream across every registrant
• ·The registrant index
• ·Per-filing detail, with holdings served from the cross-filing endpoint

Endpoints

4 endpoints on https://api.3spread.com. Full parameters and response schemas are in the API reference.

Query it

Every dataset is available on the free Community tier. Sign up, provision a key, and query it. No credit card.

curl "https://api.3spread.com/v1/fund-portfolios?limit=10" \
  -H "apikey: $THREESPREAD_API_KEY"

from py3spread import Client

client = Client()  # reads THREESPREAD_API_KEY
page = client.fund_portfolios.list(limit=10)

for row in page["data"]:
    print(row)

What people build with it

• ·Look through an ETF or mutual fund to its real underlying positions
• ·Track how a fund's exposure to a name changed month over month
• ·Find every fund holding a given security

Guides using this dataset

• See what a fund actually holds (N-PORT look-through)

  Find a fund family by name, then pull its largest reported positions from Form N-PORT, with each position's weight in the fund. Python, on a free key.

The other datasets

All of them are included, free, on the same key.