ACMG vs IWP
American Century Mid Cap Growth Insights ETF against iShares Russell Mid-Cap Growth ETF: cost, size, returns, what they hold and how much of it is the same.
Overlap by weight
22%
24 shared positions
Fee gap
22 bp
IWP is cheaper
1-year return gap
—
Larger fund
IWP
$18.7B
Side by side
| ACMG | IWP | |
|---|---|---|
| Fund | American Century Mid Cap Growth Insights ETF | iShares Russell Mid-Cap Growth ETF |
| Issuer | American Century | iShares |
| Category | Mid Cap Growth | Mid Cap Growth |
| Expense ratio | 0.45% | 0.23% |
| Assets | $102M | $18.7B |
| Average daily dollar volume | $171K | $103M |
| Listed | Jul 15, 2020 | Jul 17, 2001 |
| FrenzyCap score | 36 | 88 |
| 1-month return | — | −4.5% |
| 3-month return | — | −3.4% |
| Year to date | — | −3.0% |
| 1-year return | — | −6.2% |
| 30-day volatility | — | 19.5% |
| Worst drawdown, 1 year | −5.7% | −14.9% |
| Trailing 12-month yield | — | 0.40% |
| Holdings | 38 | 276 |
| Top 10 weight | 55.1% | 22.3% |
| Look-through P/E | 52.0 | 55.4 |
| Holdings vs fair value | +1.1% | +2.4% |
| Holdings above 200-day average | 60% | 53% |
| Net flow, latest 3 reported months | +$4.0M thru May 2026 | +$245M thru Jun 2026 |
| 30-day implied volatility | — | 22.6% |
| Holdings as of | as of Oct 12, 2026third-party data | as of Oct 23, 2026issuer data |
Returns are price returns and exclude distributions. Flows are each fund's own latest reported months and may not cover the same period.
Largest shared holdings
54% of ACMG · 25% of IWP| Holding | ACMG | IWP |
|---|---|---|
| NET | 10.66% | 3.14% |
| TRGP | 4.83% | 1.94% |
| COR | 1.64% | 1.87% |
| VST | 3.02% | 1.42% |
| NTRA | 1.19% | 1.67% |
| IDXX | 1.22% | 1.12% |
| TEAM | 5.22% | 1.09% |
| RVMD | 1.45% | 1.08% |
| CMG | 3.91% | 1.05% |
| AXON | 0.92% | 0.98% |
| ALNY | 1.34% | 0.90% |
| DXCM | 1.38% | 0.88% |
| CRDO | 1.61% | 0.74% |
| DDOG | 0.69% | 2.67% |
| INSM | 0.97% | 0.60% |
| RDDT | 2.31% | 0.60% |
| AFRM | 1.01% | 0.59% |
| CPNG | 2.59% | 0.52% |
| MTSI | 3.67% | 0.48% |
| TOST | 1.58% | 0.47% |
| ZTS | 0.44% | 0.81% |
| CPAY | 1.42% | 0.29% |
| ONON | 0.26% | 0.22% |
| VKTX | 0.58% | 0.01% |
Sector mix of the stock holdings
| Sector | ACMG | IWP | Gap |
|---|---|---|---|
| Technology | 46.4% | 36.2% | +10.1% |
| Industrials | 11.7% | 17.9% | −6.1% |
| Health Care | 10.9% | 14.4% | −3.5% |
| Consumer Discretionary | 10.7% | 10.6% | +0.1% |
| Utilities | 10.3% | 4.5% | +5.9% |
| Financials | 2.8% | 5.0% | −2.1% |
| Materials | 0.3% | 4.2% | −4.0% |
| Communication Services | 2.0% | 1.4% | +0.6% |
| Energy | 0.0% | 2.5% | −2.5% |
| Real Estate | 0.0% | 2.3% | −2.3% |
| Consumer Staples | 0.0% | 1.0% | −1.0% |
| Other | 0.0% | 0.0% | −0.0% |
More: full overlap table · ACMG holdings · IWP holdings
Fund data comes from each fund's SEC filings and issuer disclosures and is shown with the date it is as of. SEC portfolio and flow filings become public about 60 days after the period they cover. Nothing here is investment advice; see Terms.