# get_major_holders

Get major holders (insiders, institutions percentage) information for a given stock symbol.

Agent View of the PolicyLayer registry record for `get_major_holders`. HTML page: https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-major-holders

## Facts

- Tool: `get_major_holders`
- Server: Yahoo Finance MCP Server (`a05031113/yahoo-fianace-mcp`) — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp.md
- Homepage: https://github.com/a05031113/yahoo-fianace-mcp
- Risk category: Read (Low risk)
- Registry record: grade A, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_major_holders",
    "arguments": {}
  }
}
```

## Why get_major_holders is rated Low

This tool retrieves and queries holder information for a stock symbol without any side effects. It is a read-only operation that fetches factual data about institutional and insider ownership percentages. No data is created, modified, deleted, or executed. The blast radius of misuse is minimal—an agent could only retrieve unwanted information, not cause financial harm or irreversible changes.

From the tool's own definition: "Tool name 'get_major_holders' and description 'Get major holders (insiders, institutions percentage) information' indicates data retrieval only. No modification, deletion, or execution of operations—purely querying publicly available financial information."

## Use case

AI agents call get_major_holders to retrieve information from Yahoo Finance MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Yahoo Finance MCP Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_major_holders": {}
  }
}
```

## Other tools on Yahoo Finance MCP Server (19)

- `get_analyst_price_targets` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-analyst-price-targets.md
- `get_balance_sheet` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-balance-sheet.md
- `get_cashflow` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-cashflow.md
- `get_company_info` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-company-info.md
- `get_current_stock_price` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-current-stock-price.md
- `get_dividends` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-dividends.md
- `get_earning_dates` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-earning-dates.md
- `get_historical_stock_prices` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-historical-stock-prices.md
- `get_income_statement` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-income-statement.md
- `get_institutional_holders` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-institutional-holders.md
- `get_mutualfund_holders` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-mutualfund-holders.md
- `get_news` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-news.md
- `get_option_chain` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-option-chain.md
- `get_option_expiration_dates` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-option-expiration-dates.md
- `get_recommendations` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-recommendations.md
- `get_splits` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-splits.md
- `get_stock_price_by_date` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-stock-price-by-date.md
- `get_stock_price_date_range` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-stock-price-date-range.md
- `get_sustainability` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-sustainability.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

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Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=a05031113-yahoo-fianace-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/a05031113-yahoo-fianace-mcp