ETFIQ
RankingsCompareHoldingsResearch
My portfolioWeekly note

MID · American Century Mid Cap Growth Impact ETF

Equity fundActively managed0.45% fee$100mSince Sep 14, 2026SEC filings ↗
Share on XDownload as PDFCompareAdd to portfolioAlerts

MID is actively managed and returned +2.9% since it listed on Sep 14, 2026.

+2.9%
Total return, 1 year
0.45%
Expense ratio
35
Holdings
0.0%
Below its high
WindowTotal returnS&P 500Gap to S&P 500Gap to Nasdaq-100
Since listing Sep 14 – Oct 2, 2026+2.9%+1.4%+1.5 pts−2.9 pts

MID over each window to Oct 2, 2026. Every figure is an ETFIQ calculation. Source: ETFIQ.

MID top ten by weight, 55.2% of its 35 equity positions, from the holdings filed for May 31, 2026. An index fund holds what the index holds, so this is the index. Source: the fund’s SEC filing.

Monolithic Power Systems Inc MPWR 8.45%
Cloudflare Inc NET 7.48%
Okta Inc OKTA 7.22%
Johnson Controls International plc JCI 5.57%
Cadence Design Systems Inc CDNS 4.96%
WESCO International Inc WCC 4.82%
Targa Resources Corp TRGP 4.64%
Vistra Corp VST 4.25%
Hubbell Inc HUBB 3.96%
Vertiv Holdings Co VRT 3.90%
Fund filings on SEC EDGAR ↗
Head to head
Funds near this one
ACWIACWXAIRRAORAVDVAVEM

In plain words

MID is actively managed and tracks no index. The prospectus expense ratio is 0.45% a year. By its holdings filed for May 31, 2026, 54% of the fund by weight is stocks the S&P 500 also holds, across 35 positions, with the top ten at 55.2%.
What it tracksNo index, actively managed
Fund typeEquity fund
Category (ETFIQ)Stocks · U.S. mid-cap growth
Expense ratio (485BPOS XBRL, Dec 29, 2025)0.45%
Price$70.93
Listed sinceSep 14, 2026
Net assets (SEC filing, whole fund, as filed for May 31, 2026)$100m
Below its high (ETFIQ)0.0%
Holdings35
Top ten weight55.2%
Holdings as of (SEC N-PORT)May 31, 2026
Already in the S&P 500, by weight (ETFIQ)54.5%
Active share vs the S&P 500 (ETFIQ)98.7%
Already in the Nasdaq-100, by weight (ETFIQ)23.3%
ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.

Questions people ask about MID

What does MID cost?
The prospectus expense ratio is 0.45% a year.
What does MID hold?
35 positions as filed for May 31, 2026, with the top ten at 55.2% of the fund. 54% of its weight is in stocks the S&P 500 also holds.
How far is MID below its high?
0.0% below its high of Oct 2, 2026, measured on the reinvested series to Oct 2, 2026.
Sources and dates
Prices, MID and S&P 500Tiingo end-of-day · Oct 2, 2026
Fee, 0.45%Prospectus filing with the expense ratio (SEC) ↗
Net assets, $100mSEC filing, whole fund · May 31, 2026
HoldingsHoldings filing (SEC Form N-PORT) · May 31, 2026 ↗
All fund filingsFund filings on SEC EDGAR ↗

ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.

ETFIQ covers core, leveraged and inverse, buffer, thematic, option-income, alternatives and spot crypto ETFs. This fund is here because the other funds here are measured against it and portfolios hold it. ETFIQ is an independent publisher and makes no recommendations. Standards and sources

How these figures are computed →Standards and sources →Open data →
Cite this page

ETFIQ, MID, core fund, data as of Oct 2, 2026. https://etfiq.com/funds/mid

Free to use with attribution; the underlying files are at Open data.

American Century: every fund ETFIQ covers→