How Bonds Trade (OTC)
How Bonds Trade (OTC)
Bonds don't trade on a central exchange. Instead, dealers hold inventory and quote prices to buyers and sellers directly. TRACE makes these trades public, but the process itself remains decentralized and dealer-driven.
Key takeaways
- Over-the-counter (OTC) means there is no central marketplace like the New York Stock Exchange; traders work directly with dealers.
- A bond dealer maintains an inventory of bonds and quotes both bid (buy) and ask (sell) prices to clients.
- You can negotiate prices with dealers, especially if you're trading size or frequency.
- TRACE (Trade Reporting and Compliance Engine) publishes corporate and municipal bond trades, creating post-trade transparency.
- The OTC structure creates both liquidity opportunities and challenges—dealers profit from spreads, and information asymmetry can favor large traders.
Why bonds trade OTC, not on an exchange
Stocks trade on centralized exchanges (NYSE, NASDAQ) because stocks are standardized. Every share of Apple is identical; you can buy 100 shares at the NASDAQ closing price at 4 p.m. EST, and everyone sees the same price. Bonds are almost the opposite. A 2.5% corporate bond maturing in 2032 is different from a 2.7% bond maturing in 2035 from the same issuer. There are millions of distinct bonds in existence, with different coupons, maturities, credit qualities, and features. A central exchange can't efficiently list them all.
Instead, bonds trade OTC. A dealer—usually a large investment bank or bond specialist—holds an inventory of bonds. When a client wants to buy, the dealer quotes an ask price (the price the dealer will sell at). When a client wants to sell, the dealer quotes a bid price (the price the dealer will buy at). The difference between bid and ask is the dealer's profit.
This system works because dealers have deep pockets and can hold large positions. JPMorgan, Goldman Sachs, Bank of America, and others have bond trading desks with massive inventories of government, corporate, and municipal bonds. They can absorb buy and sell orders without immediately needing to find a counterparty. The dealer absorbs the risk temporarily until offsetting trades arrive.
How a dealer quote works
Suppose you call your broker to buy $500,000 face value of a specific corporate bond. Your broker doesn't have it in inventory, so they contact a dealer. The dealer might quote 101.5 bid, 101.75 ask. This means the dealer will buy the bond at 101.5 (paying you $507,500 for $500,000 face value) or sell it at 101.75 (charging you $508,750). The 0.25 difference (25 basis points) is the spread.
The quote is usually live for only a few seconds. Market conditions can shift rapidly; a dealer won't lock in a price for long. If you're buying $10 million in bonds, you might negotiate the spread. If you're buying $100,000, you take the quoted spread or move to another dealer.
In Treasury markets, bid-ask spreads are tighter—often just 1 to 2 basis points on the most actively traded issues. In corporate and municipal bonds, spreads widen to 5 to 20 basis points or more, depending on how liquid the bond is. The least-liquid bonds—smaller municipal issues, newer corporate bonds with thin trading—can see spreads of 50 basis points or wider.
The dealer's inventory game
A dealer makes money in three ways: (1) the bid-ask spread on each trade, (2) gains from holding bonds whose prices rise, and (3) losses if prices fall before the bonds are sold. On any given day, a large bond dealer might profit from spreads and lose on inventory price moves—the net determines whether the desk makes or loses money that day.
Bond dealers constantly manage their inventory size. If they accumulate too much of one issuer's bonds, they have concentrated risk. If they sell more than they buy, they go short (they've sold bonds they don't own, betting prices will fall so they can buy them back cheaper). The inventory must balance between profitability and risk.
During market stress, dealers reduce their risk appetite and narrow their inventories. This happened dramatically in March 2020 when COVID-19 sparked panic selling. Spreads on corporate bonds widened from 5 basis points to 50 basis points or more. There were fewer bonds available for sale—dealers had pulled back—and prices moved sharply. Retail investors who needed to sell found it difficult and expensive.
TRACE: bringing transparency to corporate and municipal bonds
In 2002, the Financial Industry Regulatory Authority (FINRA) created TRACE (Trade Reporting and Compliance Engine) to require dealers to report corporate bond trades. Before TRACE, corporate bond trades were largely private. You didn't know what your neighbor paid for the same bond.
Today, most corporate and municipal bond trades are reported to TRACE within minutes of execution. You can look up recent trades in a specific bond and see the price, size, and time. This transparency helps you gauge whether the spread a dealer quoted is fair.
A TRACE search for, say, a specific Ford Motor Company bond maturing in 2030 will show you recent trades in that bond: the time, price (as a percentage of par), and size (face value). If the last trade was 101.50 at 2 p.m., and a dealer is now quoting you 101.75 ask at 3 p.m., you know the bid-ask spread and can negotiate or shop around.
However, TRACE doesn't report Treasury trades (those are reported separately through FINRA's Treasury transactions system), and reporting delays mean the most recent trade data lags real time by minutes. A rapidly moving market can shift between the reported trade and the current time.
Negotiating with dealers
The OTC structure gives you room to negotiate, especially on larger trades. If you're buying $1 million in bonds, you have more leverage than if you're buying $50,000. Professional traders know this; they often call multiple dealers to shop for the best price.
You can also build a relationship with a dealer. If you trade regularly—buying bonds, selling bonds, asking questions—dealers will quote you tighter spreads because they expect ongoing business. A retail investor calling once a year has no such advantage.
Some brokers offer price improvement tools that let you indicate your order and allow dealers to compete for the trade by offering better prices than the TRACE-reported spread. This can save money, but it adds delay.
The role of speed and information
In modern bond markets, large dealers use algorithms to track prices, identify arbitrage opportunities, and manage risk in real time. A dealer's ability to execute trades quickly and manage inventory efficiently translates to tighter spreads. This favors active traders and large institutional investors.
Retail investors are at a disadvantage because they: (1) trade smaller sizes, (2) trade less frequently, (3) lack real-time market data, and (4) can't negotiate as effectively. A retail investor might pay a 10 basis point spread on a corporate bond trade; a hedge fund might pay 2 basis points on the same bond. The fee structure built into the OTC market reflects this reality.
FINRA rules and best execution
FINRA rules require brokers to provide "best execution" on trades. This means the price your broker gets you should be no worse than the best available quote in the market at the time. In practice, because the OTC market is decentralized and fragmented, verifying best execution is difficult. Different dealers quote different prices, and trades happen constantly.
Most brokers try to honor best-execution principles, but the requirement is not as strict for bonds as it is for stocks. A retail investor buying a corporate bond through a traditional brokerage should expect fair pricing but shouldn't assume they're getting the absolute best price available—because finding that best price in a decentralized market is nearly impossible.
The flow of a bond trade
Related concepts
Next
Now that you understand how bonds trade, the next step is pricing them correctly. When you buy a bond between coupon payments, you don't pay just the quoted price—you also pay accrued interest. Let's see why that matters and how it affects what you actually pay.