American Century Mid Cap Growth Impact ETF (MID) is an ETF managed by American Century. Its largest position is MONOLITHIC POWER SYSTEMS, INC. (MPWR), representing 6.20% of fund assets.
American Century Mid Cap Growth Impact ETF Portfolio Holdings
Source: SEC Form N-PORT institutional portfolio disclosures
- Ticker:
- MID
- Type:
- ETF
- Manager:
- American Century
- Total Assets:
- —
- Report Date:
- Feb 28, 2026
- Filing Date:
- Apr 29, 2026
| Holding | Weight | Market Value | Shares |
|---|---|---|---|
|
-
MONOLITHIC POWER SYSTEMS, INC.
|
6.20% | $5,726,270.14 | 5,011 |
|
-
Johnson Controls International plc
|
6.01% | $5,554,972.80 | 38,496 |
|
-
Cloudflare, Inc.
|
5.34% | $4,937,376.06 | 28,674 |
|
-
Vistra Corp.
|
4.64% | $4,285,519.05 | 24,645 |
|
-
Targa Resources Corp.
|
4.31% | $3,980,068.20 | 16,879 |
|
-
CADENCE DESIGN SYSTEMS INC
|
4.00% | $3,698,780.80 | 12,272 |
|
-
WESCO INTERNATIONAL INC
|
3.87% | $3,579,667.50 | 12,365 |
|
-
TRACTOR SUPPLY CO /DE/
|
3.80% | $3,510,708.48 | 67,722 |
|
-
TOPBUILD CORP
|
3.71% | $3,429,943.30 | 7,651 |
|
-
On Holding AG
|
3.40% | $3,137,678.88 | 67,506 |
|
-
MSCI Inc.
|
3.28% | $3,030,127.17 | 5,299 |
|
-
Vertiv Holdings Co
|
3.16% | $2,923,333.41 | 11,469 |
|
-
HUBBELL INC
|
2.98% | $2,754,615.92 | 5,384 |
|
-
AXA SA
|
2.82% | $2,608,330.30 | 252,154 |
|
-
REPUBLIC SERVICES, INC.
|
2.82% | $2,605,791.00 | 11,379 |
|
-
DEXCOM INC
|
2.61% | $2,412,102.07 | 32,849 |
|
-
STATE STREET GLOBAL ADVISORS
|
2.51% | $2,318,498.74 | 2,318,499 |
|
-
CARVANA CO.
|
2.38% | $2,196,433.68 | 6,573 |
|
-
Zscaler, Inc.
|
2.36% | $2,176,186.95 | 14,805 |
|
-
INSULET CORP
|
2.35% | $2,172,140.88 | 8,808 |
|
-
CAMECO CORP
|
2.26% | $2,090,115.20 | 17,653 |
|
-
EQUIFAX INC
|
2.13% | $1,970,701.76 | 9,431 |
|
-
WEST PHARMACEUTICAL SERVICES INC
|
2.13% | $1,967,574.24 | 7,736 |
|
-
CHIPOTLE MEXICAN GRILL INC
|
1.89% | $1,746,436.84 | 46,922 |
|
-
TPG Inc.
|
1.71% | $1,578,534.10 | 36,355 |
|
-
GE HealthCare Technologies Inc.
|
1.66% | $1,530,848.82 | 18,166 |
|
-
Natera, Inc.
|
1.66% | $1,529,926.16 | 7,354 |
|
-
Sprouts Farmers Market, Inc.
|
1.38% | $1,273,518.80 | 17,240 |
|
-
AXON ENTERPRISE, INC.
|
1.33% | $1,224,739.20 | 2,258 |
|
-
BIO-TECHNE Corp
|
1.32% | $1,221,300.00 | 20,700 |
|
-
ALNYLAM PHARMACEUTICALS, INC.
|
1.13% | $1,046,034.64 | 3,142 |
|
-
INSMED Inc
|
1.13% | $1,039,486.13 | 6,961 |
|
-
ICON PLC
|
1.10% | $1,019,543.92 | 9,428 |
|
-
IQVIA HOLDINGS INC.
|
0.93% | $859,718.48 | 4,808 |
|
-
BRIGHT HORIZONS FAMILY SOLUTIONS INC.
|
0.91% | $844,609.68 | 11,334 |
|
-
Nu Holdings Ltd.
|
0.86% | $794,119.76 | 53,012 |
|
-
Toast, Inc.
|
0.84% | $778,061.90 | 28,490 |
|
-
Viking Therapeutics, Inc.
|
0.80% | $741,975.84 | 21,926 |
|
-
Affirm Holdings, Inc.
|
0.67% | $614,592.36 | 13,082 |
|
-
IDEXX LABORATORIES INC /DE
|
0.63% | $579,235.86 | 882 |
|
-
Structure Therapeutics Inc.
|
0.57% | $524,938.30 | 8,335 |
|
-
ARGENX SE
|
0.25% | $227,008.32 | 296 |
|
-
Duolingo, Inc.
|
0.13% | $117,463.00 | 1,163 |
|
-
APPLIED MATERIALS INC /DE
|
0.00% | $1,923.75 | 1,924 |
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