stock-historical-index

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---
name: stock-historical-index
description: Retrieve full historical end-of-day price data for market indices using Octagon MCP. Use when analyzing index performance over time, tracking market trends, calculating returns, and understanding market context for individual stock analysis.
---

# Stock Historical Index

Retrieve full historical end-of-day price data for market indices using the Octagon MCP server.

## Prerequisites

Ensure Octagon MCP is configured in your AI agent (Cursor, Claude Desktop, Windsurf, etc.). See [references/mcp-setup.md](references/mcp-setup.md) for installation instructions.

## Workflow

### 1. Identify Parameters

Determine your query parameters:
- **Index Symbol**: ^GSPC (S&P 500), ^DJI (Dow), ^IXIC (NASDAQ), etc.
- **Start Date**: Beginning of date range
- **End Date**: End of date range

### 2. Execute Query via Octagon MCP

Use the `octagon-agent` tool with a natural language prompt:

```
Retrieve full historical end-of-day price data for the <INDEX> index from <START_DATE> to <END_DATE>.
```

**MCP Call Format:**

```json
{
  "server": "octagon-mcp",
  "toolName": "octagon-agent",
  "arguments": {
    "prompt": "Retrieve full historical end-of-day price data for the ^GSPC index from 2025-01-01 to 2025-04-30."
  }
}
```

### 3. Expected Output

The agent returns comprehensive daily index data:

| Date | Open | High | Low | Close | Volume | Change | Change % | VWAP |
|------|------|------|-----|-------|--------|--------|----------|------|
| 2025-04-30 | 5,499.44 | 5,581.84 | 5,433.24 | 5,569.07 | 5.45B | +69.63 | +1.27% | 5,520.90 |
| 2025-04-29 | 5,508.87 | 5,571.95 | 5,505.70 | 5,560.82 | 4.75B | +51.95 | +0.94% | 5,536.84 |
| ... | ... | ... | ... | ... | ... | ... | ... | ... |

**Key Statistics**:
- Highest single-day volume: 9.49B on 2025-04-09
- Largest daily gain: +9.90% on 2025-04-09
- Largest daily loss: -4.12% on 2025-04-04
- Trading days covered: 79

**Data Sources**: octagon-stock-data-agent

### 4. Interpret Results

See [references/interpreting-results.md](references/interpreting-results.md) for guidance on:
- Analyzing index price trends
- Calculating period returns
- Understanding volume patterns
- Identifying significant market moves

## Example Queries

**S&P 500 History:**
```
Retrieve full historical end-of-day price data for the ^GSPC index from 2025-01-01 to 2025-04-30.
```

**NASDAQ Composite:**
```
Get historical data for ^IXIC from 2024-01-01 to 2024-12-31.
```

**Dow Jones:**
```
Show ^DJI historical prices for Q1 2025.
```

**Russell 2000:**
```
Retrieve historical data for ^RUT from 2024-06-01 to 2025-06-01.
```

**Multiple Indices:**
```
Compare ^GSPC and ^IXIC performance from 2025-01-01 to 2025-03-31.
```

## Common Index Symbols

### US Major Indices

| Symbol | Index | Description |
|--------|-------|-------------|
| ^GSPC | S&P 500 | 500 large-cap US stocks |
| ^DJI | Dow Jones | 30 blue-chip stocks |
| ^IXIC | NASDAQ Composite | All NASDAQ stocks |
| ^NDX | NASDAQ 100 | 100 largest NASDAQ |
| ^RUT | Russell 2000 | 2000 small-cap stocks |

### Sector Indices

| Symbol | Index | Description |
|--------|-------|-------------|
| ^XLK | Technology | Tech sector |
| ^XLF | Financials | Financial sector |
| ^XLV | Healthcare | Healthcare sector |
| ^XLE | Energy | Energy sector |
| ^XLI | Industrials | Industrial sector |

### Volatility Indices

| Symbol | Index | Description |
|--------|-------|-------------|
| ^VIX | VIX | Market volatility |
| ^VXN | VXN | NASDAQ volatility |

## Understanding Index Data

### Price Components

| Field | Description |
|-------|-------------|
| Open | First trade price of day |
| High | Highest price of day |
| Low | Lowest price of day |
| Close | Last trade price of day |
| Volume | Total shares traded |
| Change | Point change from prior close |
| Change % | Percentage change |
| VWAP | Volume-weighted average price |

### Daily Range Analysis

| Metric | Calculation |
|--------|-------------|
| Daily Range | High - Low |
| R