Mid-cap stocks: What they are and why you should care

Why invest in mid-cap stocks?

Mid-cap stocks provide a balance between the rapid growth potential seen in small-cap companies and the stability associated with large-cap firms.

Here are five reasons why you might consider adding mid-cap stocks to your portfolio:

1. Balanced growth and stability

Mid-cap companies are typically in the growth phase of their lifecycle, expanding market share, increasing revenues, or even positioning themselves for acquisition by larger firms. However, they also tend to be more stable than smaller companies, as they have survived the most volatile early stages of development.

This combination of growth potential and relative financial stability makes mid-caps appealing to investors seeking risk-adjusted returns and capital appreciation.

2. Potential for outperformance

Historically, mid-cap stocks have shown the ability to outperform both small- and large-cap stocks over the long term. The S&P MidCap 400 Index has consistently delivered higher returns than the S&P 500 and Russell 2000 over several market cycles. 

Mid-cap companies can often capitalise on market opportunities more effectively than their larger counterparts, and investors can benefit from this agility.

3. Less competition from institutional investors

While large-cap stocks are heavily traded by institutional investors and often fully valued, mid-cap stocks tend to fly under the radar. With fewer analysts and institutional buyers focussing on mid-caps, the market may present more opportunities for individual investors to uncover undervalued stocks with strong growth potential.

4. Benefits from mergers and acquisitions

Mid-cap companies are frequently acquisition targets for larger firms looking to expand their market presence, product lines, or technologies. When a mid-cap company is acquired, the share price often experiences a significant jump, providing a potential windfall for investors who own the stock before the deal is announced.

5. Diversification

Since mid-caps behave differently than large- and small-cap stocks during various economic cycles, they can improve overall portfolio diversification and reduce volatility. Additionally, their relatively lower correlation with large-cap stocks can help investors manage risk while exploring growth opportunities.

Mid-cap stock indexes

For investors seeking broad exposure to mid-cap companies, several major indexes track the performance of this market segment. These indexes can provide diversification across sectors and geographies, offering a balanced approach to mid-cap investing.

S&P MidCap 400 Index (US)

The S&P MidCap 400 tracks 400 mid-sized companies in the US with market caps between $2 billion and $8 billion. It is one of the most widely followed mid-cap benchmarks used by numerous exchange-traded funds (ETFs).

Russell Midcap Index (US)

The Russell Midcap Index represents the 800 smallest companies in the Russell 1000, focussing on mid-caps in the US market. With a median market cap of around $8 billion, it provides a comprehensive look at mid-sized companies and is often used by mutual funds and ETFs.

FTSE Developed Europe Mid Cap Index (Europe)

This index tracks the performance of mid-sized companies across developed European markets. It includes companies from various sectors, offering investors exposure to European mid-caps.

MSCI Europe Mid Cap Index (Europe)

The MSCI Europe Mid Cap Index covers mid-sized companies from 15 European developed markets, providing broad exposure to this region. The index includes companies from sectors like industrials, healthcare, and financials.

Nikkei 500 Mid Cap Index (Japan)

For investors looking at the Japanese market, the Nikkei 500 Mid Cap Index tracks the performance of mid-sized companies in Japan. It focusses on companies that are often industry leaders in sectors like technology and manufacturing.

How ETFs can help you get exposure to mid-cap stocks

ETFs (Exchange Traded Funds) are investment funds that follow specific stock, bond, commodity or currency baskets, and are traded on stock exchanges just like ordinary stocks. Mid-cap stock ETFs are a great way to diversify your portfolio because each ETF allows you to invest in a wide range of mid-sized companies without the need to pick individual stocks.

These ETFs focus on companies that are bigger and more established than small-cap stocks but still have plenty of room to grow, unlike large-cap companies that may already be industry giants. This sweet spot can offer a nice mix of growth potential and stability.

By including mid-cap ETFs in a portfolio, investors can spread their exposure across a broader range of company sizes, reducing reliance on any single market segment and potentially smoothing out overall portfolio performance during market fluctuations.

Risks of investing in mid-cap stocks

Mid-cap stocks might offer a mix of growth potential and stability, but they also come with risks that investors must consider. Here are the main risks associated with mid-cap investing:

1. Higher volatility

Mid-cap stocks generally experience more price volatility than large-cap stocks. While not as volatile as small-cap stocks, mid-caps are more susceptible to market fluctuations due to their size and relative lack of financial resources. As a result, they may experience sharp price swings during periods of economic uncertainty or market corrections.

2. Limited financial resources

Compared to large-cap companies, mid-cap firms often have less access to capital, making it harder for them to finance expansion, innovation, or face economic downturns. This limitation can sabotage their ability to grow consistently or overcome challenges that require significant financial investment.

3. Less analyst coverage

Mid-cap stocks tend to receive less attention from institutional investors and analysts than large-cap stocks. This reduced coverage can lead to a lack of information, making it harder for individual investors to make informed decisions. Limited visibility can also lead to mispricing in the market, presenting both risks and opportunities for investors.

4. Greater exposure to market shifts

Mid-cap companies are often more concentrated in specific sectors or markets, which can expose them to sector-specific risks. Unlike large-cap companies that are more diversified, mid-cap firms may struggle if their industry faces headwinds or if they are unable to adapt to changing market conditions.

5. Mergers and acquisitions risks

While mid-cap companies are often targets for mergers and acquisitions, these deals can also pose risks. Failed acquisitions or restructuring efforts can negatively affect a company's stock price, resulting in losses for investors. Additionally, regulatory issues or integration challenges can also complicate the post-merger performance of mid-cap companies.

Conclusion: Consider adding mid-cap stocks to your portfolio

Mid-cap stocks strike a balance between the aggressive growth potential of small-caps and the stability of large-caps, making them a versatile investing option. They offer growth opportunities as many of these companies are still expanding, yet they are more stable than smaller companies, having already proven their business models and market positions.

While they come with risks such as volatility, limited financial resources, and less analyst coverage, they can also provide significant returns.

Balancing mid-cap investments alongside small and large-cap stocks can help you create a diversified portfolio that captures different growth stages, reduces risk, and takes advantage of market changes.