---
title: "Treasury secondary prices"
method: GET
path: "/api/v2/fixed-income/treasury/prices"
tags: ["Fixed Income"]
---

# Treasury secondary prices

`GET /api/v2/fixed-income/treasury/prices`

End-of-day secondary-market prices for every outstanding marketable US Treasury on one business day (bid / offer / mid / eod, all clean prices per 100 face). Omit date for the latest published day. Filter by security_type; paginate with limit/offset. Notes and bonds also carry current yield, yield-to-maturity, and accrued interest.

## Query parameters

- `date` string, nullable — Price date (YYYY-MM-DD). Omit for latest.
- `security_type` string, nullable — Filter, e.g. 'MARKET BASED NOTE'.
- `limit` integer — Page size.
- `offset` integer — Page offset.

## Response `200`

Per-CUSIP prices (and analytics for notes/bonds) for the day.

- EnvelopeTreasuryPricesData
  - `data` TreasuryPricesData, required — All outstanding marketable Treasuries priced on one business day.
    - `date` string, required
    - `count` integer, required
    - `securities` TreasuryPriceRow[], required
      - `cusip` string, required
      - `price_date` string, required — Price date (ISO).
      - `security_type` string, required
      - `coupon_rate_pct` number, required — Coupon rate, percent (0 for bills).
      - `maturity_date` string, required
      - `call_date` string, nullable
      - `bid` number, nullable
      - `offer` number, nullable
      - `mid` number, nullable — (bid+offer)/2 when both quoted.
      - `eod_price` number, nullable — Official end-of-day clean price.
      - `price` number, nullable — Headline clean price (eod_price, else mid).
      - `current_yield` number, nullable — Annual coupon / price, percent (notes/bonds).
      - `yield_to_maturity` number, nullable — YTM percent (notes/bonds).
      - `accrued_interest` number, nullable — Accrued per 100 face (T+1, Actual/Actual).
      - `macaulay_duration` number, nullable — Macaulay duration in years (notes/bonds).
      - `modified_duration` number, nullable — Modified duration in years (notes/bonds).
      - `dv01` number, nullable — Price change per 100 face for a 1bp yield move (notes/bonds).
      - `convexity` number, nullable — Convexity in years^2 (notes/bonds).
      - `bond_equivalent_yield` number, nullable — Coupon-equivalent yield percent (bills).
      - `discount_yield` number, nullable — Bank-discount yield percent, 360-day (bills).
      - `real_current_yield` number, nullable — Real annual coupon / price percent (TIPS).
      - `real_yield_to_maturity` number, nullable — Real YTM percent (TIPS).
      - `bid_offer_spread` number, nullable — offer - bid in price points (when both quoted).
      - `i_spread_bps` number, nullable — YTM minus the interpolated par-curve yield at this maturity, basis points (notes/bonds; null if outside the curve).
  - `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. JSON body with a stable `code` distinguishing `missing_api_key` (no header sent) from `invalid_api_key` (header sent, key not accepted); any other 401 source carries the generic `unauthorized` with its detail as `reason`. Plus `hint`. `plan` is always null on 401 - an unauthenticated request has no plan; quota exhaustion is 429, not 401.
- `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.

---

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