Source: https://mochatrade.com/learn/glossary/designated-market-maker

# Designated market maker
URL: https://mochatrade.com/learn/glossary/designated-market-maker
Last modified: 2026-10-17

A designated market maker is the one firm the NYSE assigns to each listed stock to keep trading orderly and to [run its opening and closing auctions](https://mochatrade.com/learn/us-market-structure/how-us-stock-prices-form). It is the last floor role in a market where [dealers became computers after 2001](https://mochatrade.com/learn/us-market-structure/us-stock-market-explained).

## Related terms

- NYSE: https://mochatrade.com/learn/glossary/nyse
- Market maker: https://mochatrade.com/learn/glossary/market-maker
- NASDAQ: https://mochatrade.com/learn/glossary/nasdaq
- CME Group: https://mochatrade.com/learn/glossary/cme-group
- Dark pool: https://mochatrade.com/learn/glossary/dark-pool
- US ETF: https://mochatrade.com/learn/glossary/us-etf