Sifting through countless of stocks in the Capital Markets industry can be tedious, and sometimes two stocks are just too similar to judge which is the better investment. If you’re on the fence about investing in Affiliated Managers Group, Inc. or Northern Trust Corporation because you’re not sure how they measure up, it’s important to compare them on a few factors before making your decision.

Read on to learn how Affiliated Managers Group, Inc. and Northern Trust Corporation compare based on key financial metrics to determine which better meets your investment needs.

About Affiliated Managers Group, Inc. and Northern Trust Corporation

Affiliated Managers Group, Inc., through its affiliates, operates as an investment management company providing investment management services to mutual funds, institutional clients,retails and high net worth individuals in the United States. It provides advisory or sub-advisory services to mutual funds. These funds are distributed to retail, high net worth and institutional clients directly and through intermediaries, including independent investment advisors, retirement plan sponsors, broker-dealers, major fund marketplaces, and bank trust departments. The company also offers investment products in various investment styles in the institutional distribution channel, including small, small/mid, mid, and large capitalization value and growth equity, and emerging markets. In addition, it offers quantitative, alternative, and fixed income products, and manages assets for foundations and endowments, defined benefit, and defined contribution plans for corporations and municipalities. Affiliated Managers Group provides investment management or customized investment counseling and fiduciary services. Affiliated Managers Group, Inc. was formed in 1993 and is based in West Palm Beach, Florida with additional offices in Prides Crossing, Massachusetts; Stamford, Connecticut; London, United Kingdom; Dubai, United Arab Emirates; Sydney, Australia; Hong Kong; Tokyo, Japan, Zurich, Switzerland and Delaware.

Northern Trust Corporation, a financial holding company, provides wealth management, asset servicing, asset management, and banking solutions for corporations, institutions, families, and individuals. It operates in two segments, Asset Servicing and Wealth Management. The Asset Servicing segment offers asset servicing and related services, including custody, fund administration, investment operations outsourcing, investment management, investment risk and analytics services, employee benefit services, securities lending, foreign exchange, treasury management, brokerage, transition management, banking, and cash management services. It serves corporate and public retirement funds, foundations, endowments, fund managers, insurance companies, sovereign wealth funds, and other institutional investors. The Wealth Management segment offers trust, investment management, custody, and philanthropic services; financial consulting; guardianship and estate administration; family business consulting; family financial education; brokerage; and private and business banking services. This segment also provides global custody, fiduciary services, family office consulting, and technology solutions to high-net-worth individuals and families, business owners, executives, professionals, retirees, and established privately held businesses. In addition, it offers asset management and related services comprising active and passive equity; active and passive fixed income; cash management; multi-asset and alternative asset classes that include private equity and hedge funds of funds; and multi-manager advisory services and products through separately managed accounts, bank common and collective funds, registered investment companies, exchange-traded funds, non-U.S. collective investment funds, and unregistered private investment funds. Further, the company provides overlay and other risk management services. The company was founded in 1889 and is headquartered in Chicago, Illinois.

Latest Capital Markets and Affiliated Managers Group, Inc., Northern Trust Corporation Stock News

As of July 31, 2026, Affiliated Managers Group, Inc. had a $9.7 billion market capitalization, compared to the Capital Markets median of $2.8 million. Affiliated Managers Group, Inc.’s stock is up 27.2% in 2026, up 2.4% in the previous five trading days and up 74.19% in the past year.

Currently, Affiliated Managers Group, Inc.’s price-earnings ratio is 14.9. Affiliated Managers Group, Inc.’s trailing 12-month revenue is $2.1 billion with a 37.7% net profit margin. Year-over-year quarterly sales growth most recently was 9.7%. There are no analysts providing consensus earnings estimates for the current fiscal year. Affiliated Managers Group, Inc. does not currently pay a dividend.

As of July 31, 2026, Northern Trust Corporation had a $33.3 billion market cap, putting it in the 91st percentile of all stocks. Northern Trust Corporation’s stock is up 33.4% in 2026, up 0.9% in the previous five trading days and up 38.45% in the past year.

Currently, Northern Trust Corporation’s price-earnings ratio is 19.1. Northern Trust Corporation’s trailing 12-month revenue is $8.4 billion with a 24.7% net profit margin. Year-over-year quarterly sales growth most recently was 13.9%. Analysts expect adjusted earnings to reach $11.405 per share for the current fiscal year. Northern Trust Corporation currently has a 1.8% dividend yield.

How We Compare Affiliated Managers Group, Inc. and Northern Trust Corporation Stock Grades

Stock evaluation requires access to huge amounts of data and the knowledge and time to sift through it all, make sense of financial ratios, read income statements and analyze recent stock movements. AAII created A+ Investor, a robust data suite that condenses data research in an actionable and customizable way suitable for investors of all knowledge levels, to help investors streamline and work through such data.

AAII’s proprietary stock grades come with A+ Investor. These offer intuitive A‐F grades for each of five key investing factors: value, growth, momentum, earnings estimate revisions and quality. Here, we’ll take a closer look at Affiliated Managers Group, Inc. and Northern Trust Corporation’s stock grades to see how they measure up against one another.

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Affiliated Managers Group, Inc. and Northern Trust Corporation Growth Grades

Company	Ticker	Growth
Affiliated Managers Group, Inc.	AMG	D
Northern Trust Corporation	NTRS	C

The foundation of growth investing is seeking out stocks of companies exhibiting strong, consistent and prolonged growth that is expected to continue into the future.

In order to compute the growth score and assign it a letter grade, the percentile ranks for each of three components‐consistency of annual sales growth, five-year sales growth rankings adjusted for extreme levels, and consistency of positive annual cash from operations‐must be determined. These three rank figures are added together, and the sum is ranked against the entire stock universe to arrive at a company’s Growth Score to create an equal distribution of grades.

The companies in the bottom 20% of the stock universe receive Growth Grades of F, considered to be very weak, while those in the top 20% receive A grades, which are considered very strong.

Affiliated Managers Group, Inc. has a Growth Score of 25, which is Weak. Northern Trust Corporation has a Growth Score of 47, which is Average.

The Growth Stock Winner: No Clear Winner

Neither Affiliated Managers Group, Inc. or Northern Trust Corporation has a high enough Growth Grade to be considered a “winner.” Investors who are considering these companies should do additional due diligence and research to see if either could be a good addition to their portfolios. It’s important to look at a wide range of financial metrics in order to determine if Affiliated Managers Group, Inc. or Northern Trust Corporation is the better investment when it comes to sustainable growth.

Affiliated Managers Group, Inc. and Northern Trust Corporation’s Quality Grades

Company	Ticker	Quality
Affiliated Managers Group, Inc.	AMG	A
Northern Trust Corporation	NTRS	D

Like the Value Grade, AAII’s A+ Investor Quality Grade comes from the percentile rank of key metrics. Specifically, the Quality Score is the percentile rank of the average of the percentile ranks of return on assets (ROA), return on invested capital (ROIC), gross profit relative to assets, buyback yield, change in total liabilities to assets, accruals, Z double prime bankruptcy risk (Z) score and the F-Score.

The score is variable, meaning it can consider all eight measures or, should any of the eight measures not be valid, the remaining measures that are valid. To be assigned a Quality Score, stocks must have a valid (non-null) measure and corresponding ranking for at least four of the eight quality measures.

The Quality Score is used to assess the underlying “quality” of a particular stock. A higher-quality stock possesses traits associated with upside potential and reduced downside risk. Backtesting of the Quality Grade shows that stocks with higher grades, on average, outperformed stocks with lower grades over the period of 1998 through 2019.

Stocks receive better grades (higher scores) for having higher scores for the quality subcomponents and worse grades (lower scores) for lower scores for the subcomponents.

Affiliated Managers Group, Inc. has a Quality Score of 85, which is Very Strong. Northern Trust Corporation has a Quality Score of 28, which is Weak.

The Quality Grade Winner: Affiliated Managers Group, Inc.

As you can clearly see from the Quality Grade breakdown above, Affiliated Managers Group, Inc. has a better overall quality grade than Northern Trust Corporation. For investors who are looking for companies with higher quality than others in the same industry, Affiliated Managers Group, Inc. could be a good stock to add to their portfolios. However, it’s important for investors to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

Affiliated Managers Group, Inc. and Northern Trust Corporation’s Estimate Revisions Grades

Company	Ticker	Earnings Estimate
Affiliated Managers Group, Inc.	AMG	B
Northern Trust Corporation	NTRS	A

Earnings estimate revisions scores consider the magnitude of a company’s earnings surprise in its last two reported fiscal quarters. Often, positive surprises beget further positive surprises‐or at least continued sales growth (the exact opposite is generally true, too).

Estimate revisions offer an indication of what analysts are thinking about the short-term prospects of a firm. Estimate revisions are based on the statistical significance of a firm’s last two quarterly earnings surprises and the percentage change in its consensus estimate for the current fiscal year over the past month and past three months.

Affiliated Managers Group, Inc. has a Earnings Estimate Score of 63, which is Positive. Northern Trust Corporation has a Earnings Estimate Score of 81, which is Very Positive.

The Earnings Estimate Revisions Grade Winner: Northern Trust Corporation

As you can clearly see from the Earnings Estimate Revisions Grade breakdown above, Northern Trust Corporation has a better Earnings Estimate Revisions Grade than Affiliated Managers Group, Inc.. For those who are specifically looking for companies with better short-term prospects when compared to other companies in the same industry, Northern Trust Corporation could be a good stock to invest in. However, it’s important to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

Other Affiliated Managers Group, Inc. and Northern Trust Corporation Grades

In addition to Quality, Growth and Estimate Revisions, A+ Investor also provides grades for Value and Momentum.

Momentum grades help uncover stocks experiencing anomalously high rates of return; research finds that stocks with high relative levels of momentum tend to outperform, whereas those with low levels of momentum tend to continue underperforming.

Successful stock investing involves buying low and selling high, so stock valuation is an important consideration for stock selection. Buying stocks that are going to go up typically means buying stocks that are undervalued in the first place, although momentum investors may argue that point.

These 2 key factors, when combined with the above, provide a holistic view into a particular stock. Further, by joining A+ Investor you can see whether Affiliated Managers Group, Inc. and Northern Trust Corporation pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, Affiliated Managers Group, Inc. or Northern Trust Corporation Stock?

Overall, Affiliated Managers Group, Inc. stock has a Growth Score of 25, Estimate Revisions Score of 63 and Quality Score of 85.

Northern Trust Corporation stock has a Growth Score of 47, Estimate Revisions Score of 81 and Quality Score of 28.

Comparing Affiliated Managers Group, Inc. and Northern Trust Corporation’s grades, scores and metrics can act as a solid basis to determine whether they may be a good investment or not. You’ll also want to look at your portfolio’s asset allocation as well as your risk tolerance and financial goals to see if either of these stocks would make a good fit for you. AAII can help you figure out which investments align with your individual needs and preferences.

Investors are encouraged to do their own due diligence and research. In this way, individuals can effectively become managers of their own assets‐without having to rely on others for financial independence. You can count on AAII for timeless articles on financial planning and stock-picking, unbiased research and actionable analysis.

A+ Investor adds to our qualitative teaching with a powerful data suite to help you whittle down investment choices to find stocks, exchange-traded funds (ETFs) or mutual funds that meet your needs.

AAII Disclaimer

We make no representations or warranties that any investor will, or is likely to, achieve profits similar to those shown, because past, hypothetical or simulated performance is not necessarily indicative of future results. Before making an investment decision, you should consider your circumstances and whether the information on our content is applicable to your situation. This information was prepared in good faith, and we accept no liability for any errors or omissions. The full disclaimer can be read here.