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ACMG · BATS · ETF

American Century Mid Cap Growth Insights ETF (ACMG) Price, Holdings & Fees

$564.82+1.07%+$5.96End-of-day price as of Oct 13, 2026

American Century Mid Cap Growth Insights ETF (ACMG) closed at $564.82 on Oct 13, 2026, up 1.07% from the previous close of $558.86.

Share price, past year

1Y +16.19%
Daily closing prices

52-week range $480.04 – $615.30.
Monthly closing prices
Last closing price of each month
DateClose
Oct 13, 2026$564.82
Sep 30, 2026$566.42
Aug 31, 2026$515.36
Jul 31, 2026$528.15
Jun 30, 2026$570.50
May 29, 2026$571.41
Apr 30, 2026$593.67
Mar 31, 2026$596.51
Feb 27, 2026$549.20
Jan 30, 2026$516.05
Dec 31, 2025$515.21
Nov 28, 2025$508.32
Oct 31, 2025$483.23

Key statistics

Expense ratio
0.45%
as of Dec 31, 2025
Net assets
$99.51M
as of May 31, 2026
Holdings
36
as of May 31, 2026
52-week range
$480.04 – $615.30

American Century Mid Cap Growth Insights ETF's expense ratio is 0.45%: $45.00 a year on $10,000 invested.

Holdings

American Century Mid Cap Growth Insights ETF held 36 investments worth $99.51M as of May 31, 2026. Its largest holding was Monolithic Power Systems, at 8.20% of the fund.

American Century Mid Cap Growth Insights ETF largest holdings by share of net assets
#Holding% of fundValue
1Monolithic Power Systems IncMPWR8.20%$8.16M
2Cloudflare IncNET7.26%$7.23M
3Okta IncOKTA7.01%$6.97M
4Johnson Controls International plcJCI5.40%$5.38M
5Cadence Design Systems IncCDNS4.82%$4.80M
6WESCO International IncWCC4.68%$4.66M
7Targa Resources CorpTRGP4.51%$4.49M
8Vistra CorpVST4.13%$4.11M
9Hubbell IncHUBB3.84%$3.82M
10Vertiv Holdings CoVRT3.79%$3.77M
11Chipotle Mexican Grill IncCMG3.64%$3.63M
12MSCI IncMSCI3.50%$3.48M
13Alnylam Pharmaceuticals IncALNY3.19%$3.18M
14State Street Institutional US Government Money Market Fund2.90%$2.89M
15On Holding AGONON2.88%$2.87M
16Capstone Copper Corp2.87%$2.86M
17Coupang IncCPNG2.54%$2.53M
18IDEXX Laboratories IncIDXX2.43%$2.42M
19Republic Services IncRSG2.38%$2.37M
20Cameco CorpCCJ2.09%$2.07M
21Sprouts Farmers Market IncSFM1.95%$1.94M
22Carvana CoCVNA1.95%$1.94M
23Natera IncNTRA1.72%$1.71M
24Insmed IncINSM1.70%$1.69M
25NU Holdings Ltd/Cayman IslandsNU1.59%$1.58M

Top 25 of 36 holdings, as of May 31, 2026. Percentages are of the fund's net assets.

What the fund owns

American Century Mid Cap Growth Insights ETF holdings by asset type
Asset type% of fund
Stocks97.11%
Cash and short-term investments2.90%
American Century Mid Cap Growth Insights ETF holdings by country, largest 4
Country% of fund
United States90.58%
Canada4.96%
Switzerland2.88%
Brazil1.59%

Shares of net assets from the fund's N-PORT report. Funds that borrow can add up to more than 100%, with borrowing (such as repurchase agreements) shown as a negative share.

Monthly total returns

Over the 3 months to May 31, 2026, American Century Mid Cap Growth Insights ETF's total return was +3.33%, as reported to the SEC.

American Century Mid Cap Growth Insights ETF monthly total returns
MonthTotal return
May 31, 2026+2.97%
Apr 30, 2026+7.50%
Mar 31, 2026−6.65%

The fund's own total returns as reported to the SEC (N-PORT), including reinvested distributions. Not the sample prices above.

About American Century Mid Cap Growth Insights ETF

The fund seeks long-term capital growth.

The fund's investment objective, from its prospectus.
Name
American Century Mid Cap Growth Insights ETF
Ticker
ACMG
Exchange
BATS
Fund type
ETF
Trust
American Century Etf Trust
SEC series ID
S000068306
SEC CIK
0001710607
Fractional shares
Yes

Recent SEC filings

Shareholder reports and prospectuses are filed by American Century Etf Trust, the trust behind American Century Mid Cap Growth Insights ETF, and cover all of its funds.

Frequently asked questions

What is ACMG's price?

American Century Mid Cap Growth Insights ETF (ACMG) closed at $564.82 on Oct 13, 2026, up 1.07% from the previous close of $558.86.

What is ACMG's expense ratio?

American Century Mid Cap Growth Insights ETF's expense ratio is 0.45%: $45.00 a year on $10,000 invested.

What does ACMG hold?

American Century Mid Cap Growth Insights ETF held 36 investments worth $99.51M as of May 31, 2026. Its largest holding was Monolithic Power Systems, at 8.20% of the fund. Its five largest holdings were Monolithic Power Systems, Cloudflare, Okta, Johnson Controls International and Cadence Design Systems.

How has ACMG performed?

Over the 3 months to May 31, 2026, American Century Mid Cap Growth Insights ETF's total return was +3.33%, as reported to the SEC.

Sources and methodology

Holdings, net assets and monthly returns come from the fund's N-PORT filing with the SEC, as of May 31, 2026 (filed Jul 29, 2026). The expense ratio is from the fund's prospectus or shareholder report, as of Dec 31, 2025. Prices are generated sample data for development. Data sources and disclosures