> For the complete documentation index, see [llms.txt](https://chartschool.stockcharts.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://chartschool.stockcharts.com/table-of-contents/index-and-market-indicator-catalog/philadelphia-indices.md).

# Philadelphia Indices

## Overview <a href="#overview" id="overview"></a>

The Philadelphia Stock Exchange (PHLX), the oldest stock exchange in the US, was taken over by the Nasdaq in 2007 and is now known as the Nasdaq OMX PHLX. The exchange still publishes indices that cover certain industry groups and currencies. The Semiconductor Index ($SOX) and the Gold & Silver Index ($XAU) are two of the most popular industry group indices. The Euro Index ($XEU) tracks Euro-Dollar and the Yen Index ($XJY) tracks Yen-Dollar.

## Details <a href="#details" id="details"></a>

**Symbol Group:** Philadelphia INDX

**Publisher:** Nasdaq OMX PHLX

**Update Frequency:** Intraday

**Online Source:** [NasdaqTrader.com](https://www.nasdaqtrader.com/)

**Links to Current Symbols:** [Philadelphia Indices](https://stockcharts.com/search/?q=%22Philadelphia%20Indices%22\&section=symbols)

## Chart Example <a href="#chart_example" id="chart_example"></a>

<figure><img src="https://436553459-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FERtrZrZOhufFzk6ZQO4B%2Fuploads%2FiFWJXPoEoLcM3MM5GLhW%2Fsym-phlx-exam.png?alt=media&amp;token=630c6ad7-dc0e-48bd-b372-e2cac3d8aca9" alt=""><figcaption></figcaption></figure>

## Symbol List <a href="#symbol_list" id="symbol_list"></a>

StockCharts.com users can access [an up-to-date list of symbols](https://stockcharts.com/search/?q=%22Philadelphia%20Indices%22\&section=symbols) for all our Philadelphia Indices. From this list, click the “Mentions” icon to the right of a specific symbol for more details about the symbol, as well as recent mentions in Public ChartLists, blog articles, and more.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://chartschool.stockcharts.com/table-of-contents/index-and-market-indicator-catalog/philadelphia-indices.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
