# State Street Prime Money Market ETF (MMK) — Overview

MMK · NYSE · Fund

Canonical page: https://www.lighthorse.io/tickers/mmk

## Price

Last close $100.17 on Oct 15, 2026. 52-week range $99.99 – $100.33.

## Fund profile

MMK seeks to maximize current income, to the extent consistent with preservation of capital and liquidity.

| Metric | Value |
| --- | --- |
| Issuer | State Street Global Advisors |
| Industry | — |
| Inception | Feb 10, 2026 |
| Assets under management | $32.0M |
| Expense ratio | 0.18% |
| Net asset value | $100.14 (as of Oct 14, 2026) |
| Distributions | Monthly |
| Leverage | 1x |

## Frequently Asked Questions

### What is State Street Prime Money Market ETF (MMK)?

MMK seeks to maximize current income, to the extent consistent with preservation of capital and liquidity.

### What is MMK's expense ratio?

State Street Prime Money Market ETF charges an annual expense ratio of 0.18%. The fund is issued by State Street Global Advisors.

### How large is MMK?

State Street Prime Money Market ETF manages $32.0M in assets and has traded since Feb 10, 2026.

### How do I buy shares of State Street Prime Money Market ETF (MMK)?

MMK trades commission-free with a Light Horse Securities brokerage account — from the mobile app, the web at [Light Horse Dashboard](https://portal.lighthorse.io), the trading API, or an [AI agent connected over MCP](/instructions/ai/claude). The trade panel on this page places the order once you are signed in.

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Quotes and charts are not real-time and must not be relied on for trade decisions or valuation.

This page is for informational purposes only. Nothing on it is a recommendation, solicitation or offer to buy or sell any security, nor investment, legal or tax advice. Light Horse Securities Inc does not verify third-party data and is not responsible for its accuracy, completeness or timeliness.

Data provided by [AInvest](https://www.ainvest.com).