# get_institutional_holders

Get institutional holders (list of institutions holding the stock) information.

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

## Facts

- Tool: `get_institutional_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_institutional_holders",
    "arguments": {}
  }
}
```

## Why get_institutional_holders is rated Low

This tool retrieves publicly available financial data about institutional stock ownership. It performs no writes, deletes, executions, or financial transactions. The blast radius of misuse is minimal—an agent could only retrieve information that is already public. This falls squarely into the Read category alongside sibling tools like get_current_stock_price and get_company_info.

From the tool's own definition: "Tool name 'get_institutional_holders' and description 'Get institutional holders (list of institutions holding the stock) information' indicate a retrieval operation with no mutation or side effects."

## Use case

AI agents call get_institutional_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_institutional_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_major_holders` — Read — https://policylayer.com/tools/a05031113-yahoo-fianace-mcp/get-major-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`

---

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