Access Real-Time & Historical S&P ASX 300 Accumulated Rates for Backtesting Investment Models Using Indices-API

In the world of finance and investment, having access to real-time and historical data is crucial for making informed decisions. The S&P ASX 300 Accumulated Index (AXKOA) is one of the key indices that investors and analysts closely monitor. With the help of the Indices-API, developers can easily access both real-time and historical rates for the S&P ASX 300 Accumulated Index, enabling them to backtest investment models and strategies effectively.

About S&P ASX 300 Accumulated (AXKOA)

The S&P ASX 300 Accumulated Index is a market capitalization-weighted index that represents the performance of the largest 300 companies listed on the Australian Securities Exchange (ASX). This index is crucial for investors looking to gauge the overall health of the Australian stock market. The accumulated version of the index includes dividends reinvested, providing a more comprehensive view of investment returns over time.

When utilizing the Indices-API to access data for the S&P ASX 300 Accumulated Index, developers can leverage various features and endpoints to retrieve the necessary information. The API is designed to provide real-time data, historical rates, and various analytical tools that can enhance investment strategies.

API Description

The Indices-API offers a robust set of features that empower developers to build next-generation applications. With a focus on innovation and technological advancement, this API provides real-time index data that can transform how investors analyze market trends and make decisions.

By integrating the Indices-API into their applications, developers can access a wealth of information, including the latest rates, historical data, and various analytical endpoints. This capability allows for the creation of sophisticated investment models that can adapt to changing market conditions.

Key Features and Endpoints

The Indices-API offers several key features that are essential for accessing and analyzing index data:

Latest Rates Endpoint: Depending on your subscription plan, the API's latest endpoint will return real-time exchange rate data updated every 60 minutes, every 10 minutes, or even more frequently. This allows developers to stay updated with the latest market movements.
Historical Rates Endpoint: Historical rates are available for most indices, allowing users to query the Indices-API for rates by appending a date in the format YYYY-MM-DD. This feature is particularly useful for backtesting investment strategies against historical performance.
Convert Endpoint: The Indices-API includes a currency conversion endpoint, enabling users to convert any amount from one currency to another. This is beneficial for investors dealing with multiple currencies.
Time-Series Endpoint: This endpoint allows users to query the API for daily historical rates between two dates of their choice, providing insights into trends over specific periods.
Fluctuation Endpoint: Users can retrieve information about how indices fluctuate on a day-to-day basis, which is crucial for understanding market volatility.
Open/High/Low/Close (OHLC) Price Endpoint: This endpoint allows users to get the open, high, low, and close prices for a specific date, providing a detailed view of market performance.
API Key: Your API Key is the unique key that is passed into the API base URL's access_key parameter, ensuring secure access to the data.
API Response: Exchange rates delivered by the Indices-API are by default relative to USD, and all data is returned in a structured format for easy integration.
Available Endpoints: The API comes with multiple endpoints, each providing different functionalities, allowing developers to tailor their queries to specific needs.
Supported Symbols Endpoint: This endpoint returns all available currencies and indices, ensuring users have access to the most up-to-date information.

List of Symbols

The API provides access to a diverse range of index symbols. For a complete list of all supported symbols and their specifications, refer to the Indices-API Supported Symbols page. This resource is invaluable for developers looking to integrate specific indices into their applications.

API Endpoint Examples and Responses

To illustrate the capabilities of the Indices-API, here are some example endpoints and their corresponding JSON responses:

Latest Rates Endpoint

Get real-time exchange rates for all available indices.

{
"success": true,
"timestamp": 1784767788,
"base": "USD",
"date": "2026-07-23",
"rates": {
"DOW": 0.00029,
"NASDAQ": 0.00039,
"S&P 500": 0.00024,
"FTSE 100": 0.00058,
"DAX": 0.00448,
"CAC 40": 0.00137,
"NIKKEI 225": 0.0125
},
"unit": "per index"
}

Historical Rates Endpoint

Access historical exchange rates for any date since 1999.

{
"success": true,
"timestamp": 1784681388,
"base": "USD",
"date": "2026-07-22",
"rates": {
"DOW": 0.00028,
"NASDAQ": 0.00038,
"S&P 500": 0.00023,
"FTSE 100": 0.0124,
"DAX": 0.0126,
"CAC 40": 0.0126,
"NIKKEI 225": 0.0126
},
"unit": "per index"
}

Time-series Endpoint

Get exchange rates for a specific time period.

{
"success": true,
"timeseries": true,
"start_date": "2026-07-16",
"end_date": "2026-07-23",
"base": "USD",
"rates": {
"2026-07-16": {
"DOW": 0.00028,
"NASDAQ": 0.00038,
"S&P 500": 0.00023,
"FTSE 100": 0.0124,
"DAX": 0.0126,
"CAC 40": 0.0126,
"NIKKEI 225": 0.0126
},
"2026-07-18": {
"DOW": 0.00029,
"NASDAQ": 0.00039,
"S&P 500": 0.00024,
"FTSE 100": 0.0124,
"DAX": 0.0126,
"CAC 40": 0.0126,
"NIKKEI 225": 0.0126
},
"2026-07-23": {
"DOW": 0.00029,
"NASDAQ": 0.00039,
"S&P 500": 0.00024,
"FTSE 100": 0.0124,
"DAX": 0.0126,
"CAC 40": 0.0126,
"NIKKEI 225": 0.0126
}
},
"unit": "per index"
}

Convert Endpoint

Convert any amount from one commodity to another or to/from USD.

{
"success": true,
"query": {
"from": "USD",
"to": "DOW",
"amount": 1000
},
"info": {
"timestamp": 1784767788,
"rate": 0.00029
},
"result": 0.29,
"unit": "per index"
}

Fluctuation Endpoint

Track rate fluctuations between two dates.

{
"success": true,
"fluctuation": true,
"start_date": "2026-07-16",
"end_date": "2026-07-23",
"base": "USD",
"rates": {
"DOW": {
"start_rate": 0.00028,
"end_rate": 0.00029,
"change": 1.0e-5,
"change_pct": 3.57
},
"NASDAQ": {
"start_rate": 0.00038,
"end_rate": 0.00039,
"change": 1.0e-5,
"change_pct": 2.63
},
"S&P 500": {
"start_rate": 0.0124,
"end_rate": 0.0125,
"change": 0.0001,
"change_pct": 0.81
},
"FTSE 100": {
"start_rate": 0.0124,
"end_rate": 0.0125,
"change": 0.0001,
"change_pct": 0.81
},
"DAX": {
"start_rate": 0.0126,
"end_rate": 0.0126,
"change": 0,
"change_pct": 0
},
"CAC 40": {
"start_rate": 0.0126,
"end_rate": 0.0126,
"change": 0,
"change_pct": 0
},
"NIKKEI 225": {
"start_rate": 0.0126,
"end_rate": 0.0126,
"change": 0,
"change_pct": 0
}
},
"unit": "per index"
}

OHLC (Open/High/Low/Close) Endpoint

Get OHLC data for a specific time period.

{
"success": true,
"timestamp": 1784767788,
"base": "USD",
"date": "2026-07-23",
"rates": {
"DOW": {
"open": 0.00028,
"high": 0.00029,
"low": 0.00027,
"close": 0.00029
},
"NASDAQ": {
"open": 0.00038,
"high": 0.0004,
"low": 0.00037,
"close": 0.00039
},
"S&P 500": {
"open": 0.0124,
"high": 0.0126,
"low": 0.0123,
"close": 0.0125
},
"FTSE 100": {
"open": 0.0124,
"high": 0.0126,
"low": 0.0123,
"close": 0.0125
},
"DAX": {
"open": 0.0126,
"high": 0.0126,
"low": 0.0126,
"close": 0.0126
}
},
"unit": "per index"
}

Bid/Ask Endpoint

Get current bid and ask prices for indices.

{
"success": true,
"timestamp": 1784767788,
"base": "USD",
"date": "2026-07-23",
"rates": {
"DOW": {
"bid": 0.00028,
"ask": 0.00029,
"spread": 1.0e-5
},
"NASDAQ": {
"bid": 0.00038,
"ask": 0.00039,
"spread": 1.0e-5
},
"S&P 500": {
"bid": 0.0124,
"ask": 0.0125,
"spread": 0.0001
},
"FTSE 100": {
"bid": 0.0124,
"ask": 0.0125,
"spread": 0.0001
},
"DAX": {
"bid": 0.0126,
"ask": 0.0126,
"spread": 0
},
"CAC 40": {
"bid": 0.0126,
"ask": 0.0126,
"spread": 0
},
"NIKKEI 225": {
"bid": 0.0126,
"ask": 0.0126,
"spread": 0
}
},
"unit": "per index"
}

Conclusion

Accessing real-time and historical S&P ASX 300 Accumulated rates through the Indices-API provides developers with the tools necessary to build sophisticated investment models and backtest strategies effectively. By utilizing the various endpoints available, such as the Latest Rates, Historical Rates, and Time-Series endpoints, developers can gain valuable insights into market trends and fluctuations.

The Indices-API not only simplifies the process of retrieving index data but also enhances the analytical capabilities of applications. For more information on how to integrate these features into your projects, refer to the Indices-API Documentation and explore the Indices-API Supported Symbols for a comprehensive list of available indices.

By leveraging the power of real-time data and historical analysis, developers can create applications that not only meet the needs of investors but also adapt to the ever-changing landscape of the financial markets.

Ready to use Indices-API?

Try it now!

Access Real-Time & Historical S&P ASX 300 Accumulated Rates for Backtesting Investment Models Using Indices-API