What are Open Market Operations?

What Are Open Market Operations

Have you ever heard of open market operations (OMOs)? It might not be a familiar term for many, especially if you are not an economist, but as a trader you have probably heard of monetary policy and interest rates many times over.

What Are Open Market Operations

Monetary policy, simply put, is a set of tools that a nation’s central bank uses to control its money supply and to maintain economic growth.

Open market operations are the main tool that central banks use to implement their monetary policy, and in this article we will discuss in detail how this all works and why it is needed.

What Are Open Market Operations?

Before we discuss what open market operations are, we first need to mention the important role that central banks play in a nation’s economy.

A central bank is essentially a financial institution that is tasked with the printing and distribution of money and credit on behalf of the government. Some central banks are nationalised, but many in developed countries are not government agencies and are therefore politically independent.

The major central banks in the world are the US Federal Reserve (Fed), the Bank of England (BoE), and the European Central Bank (ECB).

For the remainder of this article, we will be discussing the Federal Reserve’s role in the US and how it employs open market operations.

Open market operations are the Fed’s primary tool for implementing monetary policy and refers to the buying and selling of securities in the open market in order to regulate the money supply in the economy.

When the Fed uses open market operations, it can control the federal funds rate (interest rate), which in turn can have an effect on other short-term rates, long-term rates, and foreign exchange rates. It can also influence different economic factors such as unemployment, output, and the costs of goods and services.

What Is the Purpose of Open Market Operations?

One of the Fed’s main goals is to keep inflation under control by using open market operations.

For example, during periods of healthy economic growth, rising inflation can become a problem if the economy is expanding too quickly. To keep rising inflation in check, the Fed can decide to reduce the supply of bonds, which in effect removes the supply of money in the banking system – resulting in higher rates, more expensive loans, and a reduction in economic activity.

On the flip side, when the economy is too sluggish. the Fed may decide to purchase securities and increase money supply, which in turn lowers rates, making it easier to obtain loans and therefore stimulating economic activity.

The Board of Governors is charged with deciding what the federal funds rate should be, and the Federal Open Market Committee (FOMC) subsequently carries out open market operations to attain that rate.

The FOMC generally holds eight scheduled meetings during the year, and traders pay close attention to the meeting minutes that are released three weeks after policy decisions.

Major forex pairs the Fed’s rate decisions, making these events some of the most important ones to be aware of on the economic calendar.

Types of Open Market Operations

The Federal Reserve conducts two types of open market operations: permanent and temporary.

Permanent operations are used to adjust the level of reserves in the banking system to meet a specified target level, while temporary operations are used to manage day-to-day fluctuations in reserve levels.

Permanent operations are conducted through outright purchases or sales of securities in the open market. These transactions are typically conducted through broker-dealers, who act as agents for the Federal Reserve Bank of New York. Outright purchases increase reserve levels directly, while outright sales reduce them.

Temporary operations are conducted through repurchase agreements (repos) and reverse repurchase agreements (reverse repos). A repo is an agreement between the Trading Desk and a counterparty whereby the desk sells a security to a counterparty with an agreement to buy it back at a later date.

Who Conducts Open Market Operations?

Open market operations are conducted by the Trading Desk at the Federal Reserve Bank of New York. The Trading Desk is responsible for executing transactions in the federal funds market and for managing the System Open Market Account (SOMA) for the Federal Reserve System.

The SOMA portfolio consists of US Treasury securities, federal agency securities, and mortgage-backed securities (MBS).

Economic Indicators That Influence Open Market Operations

The Federal Reserve also relies on key economic data to guide its decisions with regard to interest rates. One such important measure of inflation is the Consumer Price Index (CPI) data, which reveals the change in prices that consumers pay for goods and services on a monthly basis.

The average weighted cost of goods and services such as food, energy, housing, clothing, transportation and medical care is used to calculate the CPI data, which is then compared to the previous month’s data.

When the CPI data increases, it means that the purchasing power for one unit of money declines, making it more expensive to afford basic goods and services compared to a previous month.

The CPI data, in essence, is an indicator used to measure inflation, and if the CPI data rises and gets to elevated levels, then the Fed might be forced to raise interest rates by means of employing open market operations.

Other important economic data such as the University of Michigan Consumer Sentiment Index (MCSI), gross domestic product (GDP), Producer Price Index (PPI) and employment-related data can also guide the Fed’s interest rate decisions.

Note: Although we only looked at how open market operations work in the US and mentioned the economic data that might influence its rate decisions, most central banks employ the same measures to meet their monetary policy goals, though they might use different terms to describe their processes.

Related Articles


Open market operations are a key monetary policy tool used by central banks to influence short-term interest rates. By buying and selling government securities, central banks can add or remove money from the financial system, which in turn affects interest rates.

While open market operations are typically used to adjust interest rates up or down in small increments, they can also be employed to make more significant changes if needed.

Hopefully, this article shed some light on how open market operations work and it is such an important part of a country’s monetary policy.

Risk Statement: Trading Foreign Exchange on margin carries a high level of risk and may not be suitable for all investors. The possibility exists that you could lose more than your initial deposit. The high degree of leverage can work against you as well as for you.