How Does Pit Trading Work? Inside Open Outcry

I remember my first day on the floor of the Chicago Mercantile Exchange. The noise hit me like a wall—dozens of traders screaming bids, colorful jackets flying, and papers littering the ground. It felt like chaos, but beneath that chaos was a finely tuned machine. Pit trading, also known as open outcry, is one of the oldest ways to trade futures and options. Let me walk you through exactly how it works, what you need to know, and the gritty details that textbooks often skip.

What Is Pit Trading?

Pit trading is a method where traders gather in a physical “pit”—a multi-tiered octagonal structure—and conduct transactions by shouting and using hand signals. It’s the opposite of staring at a screen. The pit is designed so everyone can see each other. The lower tiers are for newer traders, the upper tiers for veterans who need a better view. Each pit is dedicated to a specific contract, like S&P 500 futures or Eurodollars.

How It Works: The Step-by-Step Flow

Here’s the real deal. When a customer wants to buy, say, 10 contracts of crude oil futures, the order goes to a broker in the pit. That broker then stands in the pit and yells “Buy 10 crude at the market!” Other traders—locals and other brokers—hear that and respond with offers. If someone yells “Sold!” at a price, the deal is done. No paperwork, no confirmations—just a verbal handshake. The exchange rules make it binding.

But it's not just random shouting. Each trader has a specific role. Let me break them down.

Key Roles in the Pit

• Floor Broker: Executes orders for customers. They’re the ones holding the phone or receiving signals from their clerks.
• Local (or Speculator): Trades for their own account. They provide liquidity by buying and selling all day. Most locals specialize in one or two pits.
• Runner: Usually a younger person who carries order tickets between brokers and the phone booths. Runners learn the ropes fast.
• Clerk: Sits at the edge of the pit, monitors orders, and communicates with the home office. Clerks are the silent backbone.

I once saw a runner trip and scatter order slips everywhere. The pit stopped for a second—then everyone helped pick them up. That sense of community is real.

Hand Signals: The Secret Language

Because the noise can be deafening, traders use a universal sign language. Holding fingers up means prices. For example, three fingers facing outward means a bid at 3 (or 0.03, depending on the contract). Palms facing outward indicate an offer. Shaking the hand side to side means spread trading. I’ve seen experienced traders negotiate a whole trade without saying a word—just a glance and a nod.

Here’s a quick reference table of common signals:

These signals are critical. A misinterpretation can cost thousands. I once saw a new guy confuse a bid of 5 with 6—cost the firm $15,000. He didn't last long.

Pit vs Electronic Trading: Why Pits Still Exist

Most trading has moved to screens, but pits survive for certain products—especially those with complex spreads or where liquidity is thin. In the pit, you can read body language and gauge true interest. Electronic markets hide that. Also, pits handle large block trades better because a broker can negotiate a price not visible on screens. But pits are dying: the CME closed most pits in 2020. However, a few still operate, like the London Metal Exchange ring.

One insider secret: during extreme volatility, the pit can be safer because prices don’t gap as wildly as on electronic platforms. The human element smooths it out.

Survival Tips from a Floor Veteran

If you ever step into a pit, here’s what nobody tells you:

• Wear comfortable shoes. You’ll stand for hours on concrete. I wore through a pair every two months.
• Keep your jacket unzipped. It lets you move freely. Zipped up, you look like a rookie.
• Never stand in the middle. That’s where the biggest traders stand. Newbies stay on the edges.
• Know when to shut up. If you shout every second, people ignore you. Save your voice for when you have a real order.
• Respect the senior locals. They control the flow. Cross them, and you’ll find nobody trading with you.

I learned the hard way. My second week, I shouted a bid too low and pissed off a veteran. He glared at me and then ignored every order I called for three days. I lost thousands in commissions.

Frequently Asked Questions