Treasury CUSIP return series

GET

/api/v2/fixed-income/treasury/prices/{cusip}/returns

Last modified:2026-07-19 17:02:27

Maintainer:Not configured

OperationId:fixed_income_treasury_prices_cusip_returns

x-mcp-tool:get_treasury_returns

Daily total return (dirty_t / dirty_(t-1) - 1), day-over-day YTM change, and realized YTM volatility for one Treasury CUSIP over a date range, derived from its end-of-day price history. Narrow with start/end.

Request

Authorization

API Key

Add parameter in header

x-api-key

Example:

x-api-key: ********************

Path Params

Query Params

Header Params

Request Code Samples

Shell

JavaScript

Java

Swift

PHP

Python

HTTP

Objective-C

Ruby

OCaml

Dart

curl --location 'https://sugra.ai/api/v2/fixed-income/treasury/prices//returns?start=undefined&end=undefined&limit=undefined' \
--header 'x-api-key: <api-key>'

Responses

🟢200OK

application/json

Date-ordered return / yield-change series for the CUSIP.

Bodyapplication/json

Example

{
    "data": {
        "cusip": "912810EX2",
        "observations": 250,
        "realized_ytm_vol_bps": 0,
        "series": [
            {
                "date": "2026-06-26",
                "price": 0,
                "ytm": 0,
                "total_return": 0,
                "ytm_change": 0
            }
        ]
    },
    "meta": {
        "endpoint": "/api/v1/fred/us/cpi",
        "data_time": "2026-04-16T14:30:00Z",
        "response_time": "2026-04-16T14:30:12Z",
        "provider": "Sugra API v1.0.1",
        "source": "string",
        "attribution": "string",
        "fallback_used": true,
        "fallback_chain": [
            "string"
        ],
        "cached": true,
        "stale": true
    }
}

🟠401Unauthorized

🟠422Parameter Error

🟠429

🔴503Service Unavailable

Modified at 2026-07-19 17:02:27

Treasury curve history

GSW fitted nominal Treasury curve