A bond index is a method of measuring the value of a section of the bond market. Investors use it to describe the market and compare the return on investments. Now that you know all about the bond market, let’s dive into bond indices: the different types and how they’re weighted.
What is a Bond Index?
A bond index is a method of measuring the value of a specific section of the bond market. It is calculated from the prices of selected bonds. A bond index is a tool used by many investors to describe the market. Investors and financial managers also use it to compare the return on specific investments.
Different Types of Indices
Bond indices are typically categorized based on their broad characteristics, such as whether they’re composed of government bonds, municipal bonds, corporate bonds, high-yield bonds, etc. They can also be classified based on their credit rating or maturity.
Bond indices tend to be total rate-of-return indices. The main use for bond indices is to look at past performance of a market over time. They also tend to have yield, duration, and convexity, which are aggregated up from individual bonds.
Bond indices generally include more individual securities than do stock market indices. The indices are broader and tend to be more rule-based. This allows portfolio managers to predict which type of issues will be eligible for the index.
Bond Index Funds
An index is not something to be invested in directly. Think of it more as a mathematical construct. Many mutual funds and exchange-traded funds attempt to track an index, and those funds that do not may be judged against those that do.
There’s a lot to know about bond indices. Due to the large number of issues, they’re harder to replicate than stock market indices. Portfolio managers will typically define suitable benchmarks for their portfolios and use an already existing index. They’ll then purchase a subset of the issues available in their benchmark, and use the index as a measure of the market portfolio’s return. They do this in order to have something against which to compare their own portfolio’s performance.
Although it tends to get less media attention compared to the stock market, there’s still a whole lot of money to be earned in the bond market. To learn more about bonds, check out our free course Investing in Different Markets!
Ranking of Top Stock Newsletters Based on Last 3 Years of Stock Picks as of August 16, 2025
We are paid subscribers to dozens of stock and option newsletters. We actively track every recommendation from all of these services, calculate performance, and share our results of the top performing stock newsletters whose subscriptions fees are under $500. The main metric to look for is "Return vs SP500" which is their return above that of the S&P500. So, based on August 16, 2025 prices:
Best Stock Newsletters
| Rank | Stock Newsletter | Picks Return | Return vs SP500 | Picks w Profit | Max % Return | Current Promotion |
|---|---|---|---|---|---|---|
| 1. |  Alpha Picks | 74.7% | 51.1% | 78% | 969% | August, 2025 Promotion: Save $50 |
| Summary: 2 picks/month based on Seeking Alpha's Quant Rating; Retail Price is $499/yr. See complete details and analysis in our Alpha Picks Review. | ||||||
| 2. |  Moby.co | 52.5% | 18.1% | 73% | 2,406% | August, 2025 Promotion:Next pick free! |
| Summary: 60-150 stock picks per year, segmented by industry; Retail Price is $199/yr. Read our Moby Review. | ||||||
| 3. |  Zacks Top 10 | 33.0% | 15.1% | 73% | 170% | August, 2025 Promotion:$1, then $495/yr |
| Summary: 10-25 stock picks per year based on Zacks' Quant Rating; Retail Price is $495/yr. Read our Zacks Review. | ||||||
| 4. |  TipRanks SmartInvestor | 18.6% | 7.6% | 65% | 386% | Current Promotion: Save $180 |
| Summary: About 1 pick/week focusing on short term trades; Lifetime average return of 355% vs S&P500's 149% since 2015. Retail Price is $379/yr. Read our TipRanks Review. | ||||||
| 5. |  Stock Advisor | 41.7% | 6.1% | 76% | 299% | August, 2025 Promotion: Get $100 Off |
| Summary: 2 picks/month and 2 Best Buy Stocks lists focusing on high growth potential stocks over 5 years; Retail Price is $199/yr. Read our Motley Fool Review. | ||||||
| 6. |  Action Alerts Plus | 25.9% | 4.9% | 65% | 210% | Current Promotion: None |
| Summary: 100-150 trades per year, lots of buying and selling and short-term trades. Read our Jim Cramer Review. | ||||||
| 7. | Rule Breakers | 35.6% | 1.2% | 78% | 273% | Current Promotion: Save $200 |
| Summary: 2 picks/month focusing on disruptive technology and business models; Lifetime average return of 355% vs S&P500's 149% since 2005; Now part of Motley Fool Epic. Read our Motley Fool Epic Review. | ||||||
| 8. | Zacks Home Run Investor | 3.5% | -1.3% | 44% | 200% | August, 2025 Promotion:$1, then $495/yr |
| Summary: 40-50 stock picks per year based on Zacks' Quant Rating; Retail Price is $495/yr. Read our Zacks Review. | ||||||
| 9. | IBD Leaderboard ETF | 11.4% | -1.8% | n/a | n/a | August, 2025 Promotion:Save $129/yr |
| Summary: Maintains top 50 stocks to invest in based on IBD algorithm; Retail Price is $495/yr. Read our Investors Business Daily. | ||||||
| 10. | Stock Advisor Canada | 23.5% | -4.6% | 69% | 378% | August, 2025 Promotion: Save $100 |
| Summary: 1 pick/month from the Toronto stock exchange; Retail Price is CD$199/yr. Read our Motley Fool Canada Stock Advisor Review. | ||||||
| Top Ranking Stock Newsletters based on their 2024, 2023, 2022 stock picks' performance as compared to S&P500. S&P500's return is based on average return of S&P500 from date each stock pick is released. NOTE: To get these results you must buy equal dollar amounts of each pick on the date the stock pick is released. Investor Business Daily Top 50 based on performance of FFTY ETF. Performance as of August 16, 2025. | ||||||