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ACMGvsIWPETF Comparison

ETF 1
ACMG

American Century Mid Cap Growth Impact ETF

This fund is part of
US Mid Cap Growth
-1.17%
VS
ETF 2
IWP

iShares Russell Mid-Cap Growth ETF

This fund is part of
US Mid Cap Growth
-1.17%

American Century Mid Cap Growth Impact ETF (ACMG) and iShares Russell Mid-Cap Growth ETF (IWP) belong to the same industry segment: US Mid Cap Growth. In contrast, IWP's top sector exposures are Technology, Industrials and Healthcare. ACMG is more expensive with a Total Expense Ratio (TER) of 0.45%, versus 0.23% for IWP. ACMG is up 12.41% year-to-date (YTD) with +$37M in YTD flows. IWP performs worse with 3.26% YTD performance, and -$1.28B in YTD flows. Run a side-by-side ETF comparison of ACMG and IWP below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.

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ACMG vs IWP performance and flow charts

Performance

-2.00.02.04.06.0%Sep 9Sep 16Sep 23Sep 30Oct 7

Cumulative Flows

-50 M0 M50 M100 M150 MSep 9Sep 16Sep 23Sep 30Oct 7

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Daily, global ETF data for advanced analysis or integration into apps (API), from our partner Trackinsight.

Historic performance and flows
Data as of 10/09/2026
1M3MYTD1Y3Y5Y
Perf.
ACMG
IWP
+5.61%+3.02%
+4.18%+0.26%
+12.41%+3.26%
+8.87%-0.41%
+64.42%+56.01%
+28.77%+27.93%
Flows
ACMG
IWP
+$36M+$22M
+$38M-$859M
+$37M-$1.28B
+$45M-$769M
+$66M+$920M
+$95M+$521M
Volatility and drawdown
3M1Y3Y5Y
Volatility
ACMG
IWP
+16.92%+17.50%
+19.37%+18.23%
+20.36%+19.87%
+24.10%+22.63%
Max drawdown
ACMG
IWP
-6.82%-8.30%
-14.34%-14.82%
-23.84%-25.34%
-40.04%-38.70%
Max drawdown duration
ACMG
IWP
34d56d
214d245d
154d134d
1060d1059d
Trading data

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ACMG
IWP
Last sale
10/13/2026 at 1:59 PM
$140.44
Previous close
10/09/2026
$140.99
Consolidated volume
10/09/2026
Average volume
30 days
Average discount or premium
30 days
Average Bid/Ask spread
30 days
Replication quality
Data as of September 30, 2026
1-year trailing difference

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ACMG
is actively managed and doesn’t replicate an index

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ACMG
IWP
Tracking error
Tracking difference
1 year cumulative return difference
Best
Worst
Daily return difference
Average
Worst
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Main metrics
Last update 10/13/2026 at 1:59 PM
Live
Closed
ACMG
IWP
Last price
–
$140.44
1D performance
–
-0.39%
AuM$145.57 M$19.80 B
E/R0.45%0.23%
Characteristics
ACMG
IWP
Management strategyActivePassive
ProviderAmerican Century InvestmentsiShares
Benchmark-Russell Midcap Growth Index
N° of holdings-264
Asset class-Equities
Trailing 12m distribution yield
Join
Join
Inception dateJuly 15, 2020July 17, 2001
ESGYesNo
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Exposure

Countries

ACMG
Data will be available soon
IWP
USA
97.05%
Other
2.95%

Sectors

ACMG
Data will be available soon
IWP
Technology
33.31%
Industrials
16.3%
Healthcare
14.08%
Consumer Services
9.83%
Finance
8.81%
Other
17.67%
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Diversification

ACMG
Data will be available soon
IWP

Total weight of top 15 holdings out of 15

27.9%

Top 15 holdings

Data as of January 1, 1970
ACMG
Data will be available soon
IWP
Snowflake, Inc.
3.17%
Cloudflare, Inc.
2.76%
Datadog, Inc.
2.23%
Simon Property Group, Inc.
1.94%
Robinhood Markets, Inc.
1.91%
Lumentum Holdings, Inc.
1.86%
Targa Resources Corp.
1.78%
Cencora, Inc.
1.73%
Marathon Petroleum Corp.
1.60%
Teradyne, Inc.
1.57%
Autodesk, Inc.
1.56%
Comfort Systems USA, Inc.
1.54%
Anglogold Ashanti Plc
1.47%
W.W. Grainger, Inc.
1.40%
Chipotle Mexican Grill, Inc.
1.39%
Frequently asked questions about ACMG and IWP

How have the ACMG and IWP ETFs performed in 2026?

As of October 9, 2026, ACMG is up 12.41% year-to-date (YTD), while IWP has returned 3.26%. That puts ACMG better performer ahead so far this year.

Which ETF is attracting more investor money: ACMG or IWP?

Year-to-date, the ACMG ETF saw +$37M in flows, compared to -$1.28B for IWP.

Which ETF is more volatile: ACMG or IWP?

Over the past year, ACMG had a volatility of 19.37%, while IWP experienced 18.23%.

Which ETF is bigger: ACMG or IWP?

As of October 9, 2026, ACMG holds $145.57 M in assets under management (AUM), while IWP manages $19.80 B.

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