---
title: "Top-10 holdings churn between two snapshot dates"
method: GET
path: "/api/v1/etf/{symbol}/top-holdings/changes"
tags: ["Funds & ETFs"]
---

# Top-10 holdings churn between two snapshot dates

`GET /api/v1/etf/{symbol}/top-holdings/changes`

Diff between the top-10 holdings of two ETF snapshots. Returns three buckets: ``new_top_10`` (appeared in to_date, absent from from_date), ``dropped_from_top_10`` (in from_date, absent from to_date), and ``weight_changed`` (present in both). The mandatory ``caveat`` field discloses that the upstream feed reports a top-10 sample only - drop-outs may remain in the portfolio but fell below the top-10 rank threshold.

## Path parameters

- `symbol` string, required — ETF ticker.

## Query parameters

- `from_date` string, required — Older snapshot date (YYYY-MM-DD).
- `to_date` string, required — Newer snapshot date (YYYY-MM-DD).

## Response `200`

Top-10 churn payload with caveat field.

- EnvelopeEtfTopHoldingsChangesPayload
  - `data` EtfTopHoldingsChangesPayload, required — Response payload for ``/etf/{symbol}/top-holdings/changes``. The ``caveat`` field is mandatory and clarifies that the upstream reports the top-10 sample only; drop-outs may remain in the portfolio but fell below the top-10 threshold.
    - `symbol` string, required — ETF ticker.
    - `from_date` string, required — Older snapshot date.
    - `to_date` string, required — Newer snapshot date.
    - `caveat` string, required — Disclosure that the diff covers top-10 sample only - NOT full portfolio.
    - `new_top_10` ModelsEtfHolding[], required — In to_date top-10, absent from from_date top-10.
      - `symbol` string, nullable — Ticker of the held position (null for cash, futures, bonds).
      - `name` string, required — Issuer name.
      - `weight_pct` number, required — Portfolio weight as percentage (0.0-100.0).
      - `sector` string, nullable — Canonical Sugra sector or null.
      - `asset_class` string, nullable — High-level asset class (equity, bond, cash, other).
    - `dropped_from_top_10` ModelsEtfHolding[], required — In from_date top-10, absent from to_date top-10 (NOT confirmed removed from portfolio).
      - `symbol` string, nullable — Ticker of the held position (null for cash, futures, bonds).
      - `name` string, required — Issuer name.
      - `weight_pct` number, required — Portfolio weight as percentage (0.0-100.0).
      - `sector` string, nullable — Canonical Sugra sector or null.
      - `asset_class` string, nullable — High-level asset class (equity, bond, cash, other).
    - `weight_changed` EtfTopHoldingChangeEntry[], required — In BOTH top-10 with weight delta surfaced.
      - `symbol` string, nullable
      - `name` string, required
      - `from_weight_pct` number, required — Weight in the from_date snapshot.
      - `to_weight_pct` number, required — Weight in the to_date snapshot.
      - `delta_pct` number, required — to_weight_pct - from_weight_pct.
  - `meta` SugraMeta, required — Metadata attached to every /api/v1/* response envelope.
    - `endpoint` string, required — Requested endpoint path.
    - `data_time` string, required — ISO 8601 UTC timestamp of the source data, not of the request.
    - `response_time` string, required — ISO 8601 UTC timestamp when this response was produced.
    - `provider` string, required — API name and version.
    - `source` string, nullable — Identifier of the primary upstream source used for this response.
    - `attribution` string, nullable — Human-readable attribution mandated by an upstream source (e.g. a securities regulator or self-regulatory organization). Present only on responses whose source requires the owner and source to be clearly identified. Do not remove or alter it when using the response.
    - `fallback_used` boolean, nullable — True when the primary source failed and a fallback produced the data.
    - `fallback_chain` string[], nullable — Ordered list of sources attempted, in the order they were tried.
    - `cached` boolean, nullable — True when this response was served from the internal cache.
    - `stale` boolean, nullable — True when the cached response was returned after the upstream rate-limited or errored. Clients can use this to detect degraded data.

## Other responses

- `401` — Missing or invalid `x-api-key` header.
- `422` — Validation Error
- `429` — Daily rate limit exceeded. Check `X-RateLimit-Reset` for the next window.
- `503` — Upstream source is temporarily unavailable. Retry after a short delay.

---

[API](https://skmtc.net/sugra/apis/sugra-api.md) · [All operations](https://skmtc.net/sugra/apis/sugra-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/sugra/sugra-api/versions/dcf7427e6897/schema)