Understanding Market Makers
Every time you click "buy" or "sell" on your trading platform, have you ever wondered who is on the other side of that trade? In many cases, it is a market maker - a firm or institution that stands ready to buy and sell securities at any time, providing the liquidity that makes modern markets function.
What Is a Market Maker?
A market maker is a firm that continuously quotes both a bid price (the price at which they will buy from you) and an ask price (the price at which they will sell to you) for a financial instrument. By doing so, they ensure there is always someone available to trade with, even when other buyers or sellers are absent.
Without market makers, you might place a buy order and wait hours or days for someone willing to sell at your price. Market makers eliminate this problem by always being available on both sides of the market.
Major Market Makers
| Market | Notable Market Makers |
|---|---|
| US Stocks | Citadel Securities, Virtu Financial, GTS |
| Forex | Large banks (JP Morgan, Deutsche Bank, Citi) |
| Options | Citadel, Susquehanna, Wolverine Trading |
| Crypto | Jump Trading, Wintermute, Cumberland |
The Bid-Ask Spread: How Market Makers Profit
The primary way market makers earn money is through the bid-ask spread - the difference between the buy price and the sell price.
Example
Suppose a market maker quotes the following for a stock:
- Bid: $100.00 (they buy from you at this price)
- Ask: $100.05 (they sell to you at this price)
- Spread: $0.05
If someone sells to the market maker at $100.00 and immediately another person buys from the market maker at $100.05, the market maker earns $0.05 per share. Multiply this by millions of transactions per day and the profits add up rapidly.
When you trade on RoboForex, the spread you see on your MT4 platform reflects the market-making activity of liquidity providers. Tighter spreads mean more competition among market makers, which benefits you as a trader. ProCent accounts are excellent for learning how spreads affect your trades with minimal risk.
How Market Makers Manage Risk
Market makers do not simply hold every position indefinitely. They use sophisticated risk management:
Inventory Management
- They constantly balance their holdings to avoid being too heavily positioned in one direction
- If they accumulate too much of one stock, they may widen the spread to discourage more buying and encourage selling
Hedging
- Market makers hedge their positions using correlated instruments, options, or futures
- A market maker holding 10,000 shares of AAPL might hedge with AAPL put options or short a correlated ETF
Speed and Technology
- Modern market makers use algorithmic trading systems that execute thousands of trades per second
- Latency (speed of execution) is a competitive advantage, with firms investing millions in faster infrastructure
Market Makers vs. Electronic Communication Networks (ECNs)
| Feature | Market Maker | ECN |
|---|---|---|
| Quotes prices | Yes, continuously | No, matches buyer/seller orders |
| Profits from | Bid-ask spread | Commission fees |
| Guarantees liquidity | Yes | Only if orders match |
| Transparency | Less (internal books) | More (visible order book) |
| Best for | High-volume, liquid markets | Direct market access traders |
The Role of Market Makers in Different Markets
Stock Markets
On exchanges like the NYSE, designated market makers (DMMs) are assigned specific stocks. They are obligated to maintain fair and orderly markets, even during extreme volatility. During the 2020 COVID crash, DMMs continued providing liquidity when many traders fled.
Forex Markets
The forex market has no central exchange. Instead, large banks act as market makers, quoting currency pair prices to each other and to retail brokers. Your RoboForex broker aggregates quotes from multiple liquidity providers to offer you competitive spreads.
Options Markets
Options market makers are critical because many options contracts trade infrequently. Without them, bid-ask spreads on options would be enormous. They use complex mathematical models (like Black-Scholes) to price options and manage risk through delta hedging.
Controversies and Criticisms
Market making is not without controversy:
- Payment for Order Flow (PFOF): Some brokers sell retail order flow to market makers (like Citadel Securities). Critics argue this creates conflicts of interest. Supporters say it results in better prices for retail traders.
- Information Advantage: Market makers see order flow before it hits the broader market, giving them an informational edge.
- Flash Crashes: In extreme scenarios, market makers may withdraw liquidity simultaneously, exacerbating market crashes (as seen in the 2010 Flash Crash).
Did You Know? Citadel Securities alone handles roughly 25% of all US equity trading volume. That means about one in every four stock trades in America flows through a single firm.
What This Means for Your Trading
Understanding market makers helps you trade smarter:
- Watch the spread - Wide spreads mean less liquidity and higher trading costs
- Avoid trading during low liquidity - Early mornings or late evenings often have wider spreads
- Use limit orders - Instead of paying the ask price with a market order, set a limit order closer to the bid
- Understand slippage - In fast markets, your order may fill at a worse price than expected because market makers are adjusting rapidly
Knowledge Check
Summary
Market makers are the invisible backbone of financial markets. They provide the liquidity that allows you to enter and exit trades instantly, and they profit by earning the tiny spread on each transaction. Understanding their role helps you appreciate why spreads vary, why liquidity matters, and how to structure your trades to minimize costs.