Total Holdings
36
As of Oct 4, 2026
American Century Mid Cap Growth Impact ETF
MIDNYSEARCAAmerican Century InvestmentsEquity
$70.07Today:- (-)1Y +5.47%
As of Oct 15, 2026 close
- Assets (AUM)
- $104.86M
- Expense ratio
- 0.45%
- Dividend yield
- 0.10%
- Holdings
- 36
- 52-week range
- $59.44$72.94
- Volume (live)
- -
- Avg. volume (3M)
- 1.77K
MID ETF Holdings: American Century Mid Cap Growth Impact ETF
Every listed position with its portfolio weight, plus sector breakdown and geographic exposure for this Equity ETF. Analyze fund diversification and concentration.
Top 10 Holdings
52.3%
Share of fund assets
Assets (AUM)
$104.86M
Total fund assets
Expense Ratio
0.45%
Annual management fee
Portfolio Allocations
Distribution breakdown by sector, asset type, and geographic region. Understand the fund's diversification strategy across markets and asset classes.
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All 36 MID Holdings by Portfolio Weight
Holdings as of Oct 4, 2026. Ticker, name, asset type and portfolio weight for each position.
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| # | Symbol | Name | Type | Weight |
|---|---|---|---|---|
| 1 |  | Cloudflare, Inc | Stock | 7.80% |
| 2 |  | Okta, Inc | Stock | 6.73% |
| 3 |  | Monolithic Power Systems, Inc. | Stock | 5.47% |
| 4 |  | Johnson Controls International plc | Stock | 4.92% |
| 5 |  | MACOM Technology Solutions Holdings, Inc. | Stock | 4.78% |
| 6 |  | Cadence Design Systems, Inc | Stock | 4.76% |
| 7 |  | Targa Resources Corp | Stock | 4.68% |
| 8 |  | Chipotle Mexican Grill, Inc | Stock | 4.58% |
| 9 |  | WESCO International, Inc. | Stock | 4.42% |
| 10 |  | Hubbell Incorporated | Stock | 4.19% |
| 11 |  | Hilton Worldwide Holdings Inc. | Stock | 3.82% |
| 12 |  | Vistra Corp. | Stock | 3.17% |
| 13 |  | Alnylam Pharmaceuticals, Inc | Stock | 3.14% |
| 14 |  | Coupang, Inc. | Stock | 3.09% |
| 15 |  | Vertiv Holdings Co | Stock | 3.02% |
| 16 | TO:CCO | Cameco Corp | Stock | 2.89% |
| 17 |  | Cameco Corporation | Stock | 2.89% |
| 18 |  | Reddit Inc. | Stock | 2.62% |
| 19 |  | Republic Services, Inc | Stock | 2.50% |
| 20 | TO:CS | Capstone Mining Corp | Stock | 2.38% |
| 21 | TSX:CS | Capstone Copper Corp. | Stock | 2.38% |
| 22 |  | IDEXX Laboratories, Inc | Stock | 2.24% |
| 23 |  | Natera, Inc | Stock | 2.06% |
| 24 |  | Spotify Technology S.A | Stock | 1.81% |
| 25 |  | Nu Holdings Ltd. | Stock | 1.60% |
| 26 |  | DexCom, Inc | Stock | 1.51% |
| 27 |  | Toast Inc. | Stock | 1.47% |
| 28 |  | Duolingo, Inc. Class A Common Stock | Stock | 1.41% |
| 29 |  | Axon Enterprise, Inc | Stock | 1.31% |
| 30 |  | CPAY | Stock | 1.25% |
| 31 |  | Insmed Incorporated | Stock | 1.22% |
| 32 |  | Affirm Holdings, Inc | Stock | 1.10% |
| 33 |  | On Holding Ltd | Stock | 0.95% |
| 34 |  | Structure Therapeutics Inc. American Depositary Shares | Stock | 0.95% |
| 35 |  | Viking Therapeutics Inc | Stock | 0.89% |
| 36 |  | West Pharmaceutical Services, Inc | Stock | 0.73% |
Source: Fund holdings disclosures. Data as of Oct 4, 2026. Data sources and methodology
Frequently Asked Questions About American Century Mid Cap Growth Impact ETF Holdings
What are the top holdings in MID?
As of Oct 4, 2026, American Century Mid Cap Growth Impact ETF (MID) holds 36 securities. The largest are Cloudflare, Inc (7.80%), Okta, Inc (6.73%), Monolithic Power Systems, Inc. (5.47%). The holdings table lists each position by portfolio weight with its ticker, name and asset type.
How concentrated is MID's portfolio?
As of Oct 4, 2026, the 10 largest positions make up 52.3% of MID's assets. A concentrated portfolio has fewer large positions with higher individual weights, while a diversified portfolio distributes holdings more evenly.
What is MID's sector allocation?
The Sector Allocation chart shows how MID distributes investments across different industries like Technology, Healthcare, Financials, and more. This sector exposure helps understand the fund's industry diversification strategy.
What countries does MID invest in?
MID's geographic exposure is shown in the Countries tab under Portfolio Allocations. This reveals the fund's international diversification and exposure to different regions and global markets.
How diversified is MID ETF?
MID's diversification can be assessed by reviewing its 36 holdings (as of Oct 4, 2026), sector allocation, and geographic exposure. A well-diversified ETF spreads investments across multiple securities, sectors, and regions to reduce concentration risk.