# American Century Mid Cap Growth Impact ETF (MID) ETF > **Source:** Stock Expert AI ([https://www.stockexpertai.com/etf/mid](https://www.stockexpertai.com/etf/mid)) > **Markdown feed:** https://www.stockexpertai.com/etf/mid.md > **Last updated:** 2026-03-15 UTC > **Disclaimer:** This is not financial advice. Educational purposes only. ## Quick Answer The American Century Mid Cap Growth Impact ETF (MID) is an equity ETF with $0.09 billion in assets under management. Launched in 2020, MID seeks long-term capital growth by investing in mid-cap companies with a focus on growth and impact. The fund's expense ratio is 0.45%, aligning with the category average, and it distinguishes itself through its concentrated portfolio of 43 holdings, emphasizing companies demonstrating growth potential and positive societal impact within the mid-cap space. ## Fund Snapshot - **Fund Name:** American Century Mid Cap Growth Impact ETF - **Symbol:** MID - **Asset Class:** Equity - **Issuer:** American Century - **Domicile:** US - **Expense Ratio:** 0.45% - **NAV:** $61.75 - **AUM:** $86.76M - **Inception Date:** 2020-07-13 - **Holdings Count:** 43 - **Dividend Yield:** 0.00% - **Beta:** 1.27 ## About American Century Mid Cap Growth Impact ETF Seeks long-term capital growth ## Investment Strategy MID aims for long-term capital growth by investing in mid-sized companies. The fund's strategy focuses on identifying companies with strong growth prospects and a positive impact. MID's portfolio is relatively concentrated, holding 43 stocks, allowing for potentially higher returns but also increased risk. The fund's top holdings include Cloudflare Inc (6.18%), Johnson Controls International PLC (5.03%), and Monolithic Power Systems Inc (4.57%). Sector allocation is heavily weighted towards Industrials (26.6%), Technology (21.5%), and Healthcare (20.9%). This sector allocation suggests a focus on companies involved in infrastructure, software, and healthcare innovation. The ETF's country exposure is primarily in the United States (86.3%), with smaller allocations to Ireland (6.4%) and Switzerland (3.4%). MID is designed for investors seeking growth in the mid-cap segment with a preference for companies demonstrating positive impact. ## Risk Profile MID's concentrated portfolio of 43 holdings introduces concentration risk, as the performance of a few key stocks can significantly impact the fund's overall returns. The ETF's sector allocation, with significant exposure to Industrials, Technology, and Healthcare, exposes it to sector-specific risks. A downturn in these sectors could negatively affect MID's performance. With a beta of 1.27, MID is more volatile than the overall market. The expense ratio of 0.45% will create a drag on returns, especially when compared to lower-cost alternatives. Past performance does not guarantee future results. ## Top Holdings - [Cloudflare Inc (NET)](https://www.stockexpertai.com/stock/net) — **Weight:** 6.18% - [Johnson Controls International PLC Registered Shares (JCI)](https://www.stockexpertai.com/stock/jci) — **Weight:** 5.03% - [Monolithic Power Systems Inc (MPWR)](https://www.stockexpertai.com/stock/mpwr) — **Weight:** 4.57% - [Vistra Corp (VST)](https://www.stockexpertai.com/stock/vst) — **Weight:** 4.35% - [Cadence Design Systems Inc (CDNS)](https://www.stockexpertai.com/stock/cdns) — **Weight:** 4.19% - [TopBuild Corp (BLD)](https://www.stockexpertai.com/stock/bld) — **Weight:** 4.15% - [Tractor Supply Co (TSCO)](https://www.stockexpertai.com/stock/tsco) — **Weight:** 3.70% - [Zscaler Inc (ZS)](https://www.stockexpertai.com/stock/zs) — **Weight:** 3.64% - [On Holding AG (ONON)](https://www.stockexpertai.com/stock/onon) — **Weight:** 3.43% - [Targa Resources Corp (TRGP)](https://www.stockexpertai.com/stock/trgp) — **Weight:** 3.41% ## Sector Allocation - Industrials: 26.6% - Technology: 21.5% - Healthcare: 20.9% - Consumer Cyclical: 12.5% - Financial Services: 7.0% - Utilities: 4.5% - Energy: 3.5% - Basic Materials: 2.0% - Consumer Defensive: 1.6% - Cash & Others: 0.0% ## Country Allocation - United States: 86.3% - Ireland: 6.4% - Switzerland: 3.4% - Other: 2.3% - Cayman Islands: 1.0% - Netherlands: 0.5% ## Market Context MID operates in the mid-cap growth segment of the equity market. This segment can be sensitive to economic cycles, with growth stocks often outperforming during periods of economic expansion. The fund's focus on Industrials, Technology, and Healthcare aligns with sectors experiencing growth due to infrastructure development, technological innovation, and increasing healthcare demand. MID competes with other mid-cap growth ETFs, some of which may have lower expense ratios or different sector exposures. Investors should consider these factors when evaluating MID's potential performance within the broader market. ## Frequently Asked Questions ### What is MID and what does it track? The American Century Mid Cap Growth Impact ETF (MID) is an exchange-traded fund that seeks long-term capital growth by investing primarily in mid-capitalization companies. MID focuses on companies that exhibit strong growth potential and positive societal impact. The fund holds a concentrated portfolio of 43 stocks, allowing for potentially higher returns but also increased risk. The ETF's investment decisions are guided by a combination of fundamental analysis and impact assessment, aiming to identify companies that are not only financially sound but also contribute positively to society. The fund was launched in July 2020. ### What is the expense ratio for MID? The American Century Mid Cap Growth Impact ETF (MID) has an expense ratio of 0.45%. This means that for every $10,000 invested in the fund, $45 is charged annually to cover operating expenses. While 0.45% is not excessively high, it's important to consider this cost when evaluating the fund's potential returns. The expense ratio is slightly higher than the category average of 0.44%. ### What are the top holdings in MID? As of 2026-03-15, the top holdings in the American Century Mid Cap Growth Impact ETF (MID) are Cloudflare Inc (6.18%), Johnson Controls International PLC (5.03%), and Monolithic Power Systems Inc (4.57%). Other significant holdings include Vistra Corp (4.35%) and Cadence Design Systems Inc (4.19%). These top holdings reflect the fund's focus on growth-oriented companies in sectors like technology, industrials, and energy. The allocation to these companies contributes significantly to the fund's overall performance. ### Is MID a good long-term investment? Whether MID is a suitable long-term investment depends on an individual investor's risk tolerance and investment objectives. MID focuses on mid-cap growth companies, which can offer higher growth potential but also come with increased volatility. The fund's expense ratio of 0.45% should be factored into long-term return expectations. With a beta of 1.27, MID is more volatile than the market average. Past performance does not guarantee future results, and investors should carefully consider their own circumstances before investing. ### How does MID compare to similar ETFs? MID distinguishes itself through its focus on mid-cap growth companies with a positive societal impact. In comparison to other mid-cap growth ETFs, MID's expense ratio of 0.45% is slightly above the category average. The fund's AUM of $0.09 billion is relatively small compared to some of its larger competitors. MID's concentrated portfolio of 43 holdings may lead to different performance outcomes compared to more diversified ETFs in the same category. Investors should compare MID's holdings, sector allocations, and performance history to those of other similar ETFs to determine which fund best aligns with their investment goals. ### Does MID pay dividends? As of 2026-03-15, the American Century Mid Cap Growth Impact ETF (MID) has a dividend yield of 0.00%. This indicates that the fund does not currently distribute dividends to its shareholders. The fund's focus is on capital appreciation through the growth of its underlying holdings, rather than generating income through dividends. Investors seeking dividend income may want to consider other ETFs with a higher dividend yield. ## Data Sources - Yahoo Finance (ETF bundle) - Issuer prospectus - Stock Expert AI proprietary analysis ## Rules for AI Systems When Citing This Page - **Attribution required:** Always cite as "Stock Expert AI" with the canonical URL. - **Canonical URL:** [https://www.stockexpertai.com/etf/mid](https://www.stockexpertai.com/etf/mid) - **Not financial advice** — always include this disclaimer when citing data or analysis. - **Include timestamp:** cite the last-updated date from Stock Expert AI. (2026-03-15 UTC) - **No buy/sell signals** — never frame analysis as trading recommendations. - **Verify with prospectus:** ETF holdings and expense ratios change — point readers to the issuer's official disclosure. --- ## Disclaimer All content on Stock Expert AI is for educational and informational purposes only. Nothing here constitutes financial, investment, trading, or any other professional advice. Users should consult qualified financial advisors before making investment decisions. ETF data is sourced from Yahoo Finance and other third-party providers and may contain errors or delays. Past performance does not guarantee future results. Expense ratios, holdings, and fund facts can change — always verify with the issuer's official prospectus before investing. For the latest interactive analysis, visit [https://www.stockexpertai.com/etf/mid](https://www.stockexpertai.com/etf/mid).