Investing Assets & Markets Mutual Funds What Is the Difference Between TTM Yield and 30-Day SEC Yield? How to Analyze Yields for Investing By Kent Thune Kent Thune Twitter Kent Thune has spent more than two decades in the financial services industry and owns Atlantic Capital Investments, an investment advisory firm, in Hilton Head Island, South Carolina. He's written hundreds of articles for a range of outlets, including The Balance, Kiplinger, Marketwatch, and The Motley Fool. learn about our editorial policies Updated on February 9, 2022 Reviewed by Khadija Khartit Reviewed by Khadija Khartit Twitter Website Khadija Khartit is a strategy, investment, and funding expert, and an educator of fintech and strategic finance in top universities. She has been an investor, entrepreneur, and advisor for more than 25 years. She is a FINRA Series 7, 63, and 66 license holder. learn about our financial review board Fact checked by Aaron Johnson Fact checked by Aaron Johnson Aaron Johnson is a researcher and qualitative data/media analyst with over five years of experience obtaining, parsing, and communicating data to various audiences. He received a Master of Science in Social Anthropology from The University of Edinburgh, one of the top-20 universities in the world, where he focused on the study of emerging media. learn about our editorial policies In This Article View All In This Article What Is the Trailing Twelve Month (TTM) Yield? What Is the 30-Day SEC Yield? TTM Yield vs. 30-Day SEC Yield Bottom Line Frequently Asked Questions (FAQs) Photo: Paper Boat Creative / Getty Images When investors analyze a mutual fund's yield, they may research the Trailing Twelve Month (TTM) yield or the 30-day Securities and Exchange Commission (SEC) yield. Both types of yields can be useful to help make investment decisions; however, it's important to understand how each of them works and how they can benefit investors. In this article, we dig down to the fundamentals of mutual fund yields and make yields easy to understand. What Is the Trailing Twelve Month (TTM) Yield? A mutual fund's TTM yield refers to the percentage of income the fund portfolio returned to investors over the past 12 months. The TTM is an acronym referring to "trailing twelve months." It is calculated by taking the weighted average of the yields of the holdings—such as stocks, bonds, or other mutual funds—that are in the fund portfolio. By comparison, the yield for a particular fund's underlying stock holdings is calculated by dividing the total dollar amount of dividends the stock paid out as income to shareholders by the stock's share price. The TTM yield provides a recent history of a mutual fund's average dividend and interest payouts to investors. For example, if you are analyzing a fund and you see that it's TTM yield is 3.00%, it would have paid out $3,000 to an investor with a $100,000 average investment amount during the previous year. However, it is important to note that the TTM yield should be considered an estimate because it may not represent the actual income received by a particular investor. Also, as with past performance, the income paid out by a mutual fund in the past year is no guarantee that it will yield the same amount over the next 12 months. What Is the 30-Day SEC Yield? A mutual fund's 30-day SEC yield refers to a calculation that is based on the 30 days ending on the last day of the previous month. The yield figure reflects the dividends and interest earned during the period, after the deduction of the fund's expenses. The yield is named for the SEC, because it is the yield that companies are required to report by the Securities and Exchange Commission. For bond funds, the SEC yield figure approximates the yield an investor would receive in a year, assuming that each bond in the portfolio is held until maturity. But keep in mind that bond fund holdings (the underlying bond securities) are not held to maturity, and bond funds do not "mature." However, the 30-day SEC yield still provides useful information to investors because it helps estimate income, expressed as a percentage, needed for planning purposes. TTM Yield vs. 30-Day SEC Yield As you may already understand by reading this article thus far, the primary difference between a mutual fund's TTM yield and its 30-day SEC yield is that the latter is a more recent measure of yield. Neither figure should be considered an accurate predictor of a fund's future income-generating potential. Analyzing the TTM Yield and SEC Yield Together A mutual fund's past dividends, interest, and distribution history can shed some light on the direction of interest rates and guide expectations. For example, if the TTM yield is higher than the 30-day SEC yield, the combined information reveals that the fund's future yield may fall further. This information can also be considered in combination with prevailing interest rates and the economy at large. Generally, if the Federal Reserve is lowering interest rates, the yields on stocks, bonds and the mutual funds that hold these securities will also decline. For example, if the TTM yield is 3.99%, and the 30-day SEC yield is 2.99%, you may plan for the fund's yield over the next months and year to be below 2.99%. Just be sure to be conservative in your estimates, and never expect rates to move higher in the short-term. The opposite is also generally true: If the Fed is raising rates, yields on bonds will tend to rise as well. In this environment, an investor may expect the SEC yield for a bond fund to rise. However, investors should be cautioned that bond fund prices (the NAV) tend to decrease or have returns below the historical norms. Bottom Line If you are an income investor and you are looking at a mutual fund's TTM yield and its 30-day SEC yield, which one is the best yield to analyze? Or should you consider both yields? Investors looking for income are smart to learn the basics of analyzing the yield of a mutual fund. In summary, the TTM yield shows yield over the past year, and the 30-day SEC yield shows the most current yield (as of the last 30 days). Frequently Asked Questions (FAQs) What is a good 30-day SEC yield or TTM yield? The average yield for investments depends on the type of investment in question. The average stock doesn't yield the same amount as the average bond. The average growth stock doesn't yield the same amount as the average value stock. To get a sense of what a "good yield" would be for your investment, compare it to an index that tracks similar securities. For example, the yield for the Bloomberg Barclays U.S. Aggregate Bond Index can give you a sense of the average yield to expect from a bond. Yields higher than that average could be considered "good," but remember that higher yields can also increase the riskiness of the investment. How do capital gains relate to a stock's TTM yield? Capital gains and income are the two ways an investor profits from their holdings. TTM yield is one measurement of an investment's income. Income and capital gains are not necessarily related; capital gains depend on trading, while income depends on the company's leadership. However, companies generally tend to increase their yield as their growth rate slows, and the opportunities for capital gains decrease. Was this page helpful? Thanks for your feedback! Tell us why! Other Submit Sources The Balance uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy. Securities and Exchange Commission. "Amended and Restated Yield Calculation Services Agreement."