American Century Mid Cap Growth Impact ETF

S000068306American Century ETF TrustCIK 0001710607

Share classes

1 class of this one portfolio · 1 exchange-listed

Class ID	Symbol	Status	Security in the master	Type
C000218645	MID	LINKEDSEC_TICKER	MIDAmerican Century Mid Cap Growth Impact ETF	ETF

The share-class bridge is a snapshot, not history. The SEC's fund share-class file says what each class trades as today, not what it traded as at a past report date. A fund that changed ticker or converted from a mutual fund resolves to its present-day symbol for every historical month shown.

Share classes

Report period

1 period filed. Holdings below describe the selected month only.

2026-02-28

Filing

NPORT-P · filed 2026-04-29

Report date: 2026-02-28
Net assets: $92,379,092.1
Total assets: $92,414,060.15
Total liabilities: $34,968.05
Assets invested: $0
Cash not reported in C or D: $0
Amendment: No
Accession: 0001193125-26-189843

By asset category

N-PORT Item C.4.a

ECEquity - common$90.04M97.5%

STIVShort-term investment veh…$2.32M2.5%

By asset category

By issuer category

N-PORT Item C.4.b

CORPCorporate$90.04M97.5%

RFRegistered fund$2.32M2.5%

By issuer category

By investment country

as filed

USUS$82.48M89.3%

CACA$4.70M5.1%

CHCH$3.14M3.4%

IEIE$1.02M1.1%

BRBR$794.1K0.9%

NLNL$227.0K0.2%

By country

Classification look-through

Positions resolved to the master through ISIN, then rolled up through the taxonomy. 90.0% of reported value reaches a classification.

Equity · Information Technology(8)$23.11M25.0%

Equity · Health Care(14)$16.87M18.3%

Equity · Industrials(5)$14.94M16.2%

Equity · Consumer Discretionary(4)$10.59M11.5%

Not resolved to the master(4)$8.36M9.1%

Equity · Financials(4)$6.02M6.5%

Equity · Utilities(1)$4.29M4.6%

Equity · Energy(1)$3.98M4.3%

Equity · Materials(1)$2.09M2.3%

Equity · Consumer Staples(1)$1.27M1.4%

Resolved, not yet classified(1)$844.6K0.9%

Classification covers part of the master. 5,771 of 13,106 active securities are classified. Anything unclassified is shown as its own band rather than dropped, so a look-through total that falls short of 100% is telling you about coverage, not about the fund.

Percentages are of the reported value of positions above ($92.36M), not of the fund’s net assets ($92.38M). The two differ by cash, derivatives filed with no market value, and rounding.

Classification look-through

Holdings

44 positions in this filing

Issuer nameAsset categoryIssuer category

Holdings

Issuer↕	In master	CUSIP / ISIN	Asset	Balance↕	Value↕	Weight▼	Country
Monolithic Power Systems Inc	MPWR	609839105 US6098391054	EC CORP	5,011 NS	$5.73M	6.199%	US
Johnson Controls International plc	JCI	G51502105 IE00BY7QL619	EC CORP	38,496 NS	$5.55M	6.013%	US
Cloudflare Inc	NET	18915M107 US18915M1071	EC CORP	28,674 NS	$4.94M	5.345%	US
Vistra Corp	VST	92840M102 US92840M1027	EC CORP	24,645 NS	$4.29M	4.639%	US
Targa Resources Corp	TRGP	87612G101 US87612G1013	EC CORP	16,879 NS	$3.98M	4.308%	US
Cadence Design Systems Inc	CDNS	127387108 US1273871087	EC CORP	12,272 NS	$3.70M	4.004%	US
WESCO International Inc	WCC	95082P105 US95082P1057	EC CORP	12,365 NS	$3.58M	3.875%	US
Tractor Supply Co	TSCO	892356106 US8923561067	EC CORP	67,722 NS	$3.51M	3.800%	US
TopBuild Corp	—	89055F103 US89055F1030	EC CORP	7,651 NS	$3.43M	3.713%	US
On Holding AG	ONON	H5919C104 CH1134540470	EC CORP	67,506 NS	$3.14M	3.397%	CH
MSCI Inc	MSCI	55354G100 US55354G1004	EC CORP	5,299 NS	$3.03M	3.280%	US
Vertiv Holdings Co	VRT	92537N108 US92537N1081	EC CORP	11,469 NS	$2.92M	3.164%	US
Hubbell Inc	HUBB	443510607 US4435106079	EC CORP	5,384 NS	$2.75M	2.982%	US
Capstone Copper Corp	—	14071L108 CA14071L1085	EC CORP	252,154 NS	$2.61M CAD	2.824%	CA
Republic Services Inc	RSG	760759100 US7607591002	EC CORP	11,379 NS	$2.61M	2.821%	US
Dexcom Inc	DXCM	252131107 US2521311074	EC CORP	32,849 NS	$2.41M	2.611%	US
State Street Institutional US Government Mone…	—	857492706 US8574927062	STIV RF	2,318,498.74 NS	$2.32M	2.510%	US
Carvana Co	CVNA	146869102 US1468691027	EC CORP	6,573 NS	$2.20M	2.378%	US
Zscaler Inc	ZS	98980G102 US98980G1022	EC CORP	14,805 NS	$2.18M	2.356%	US
Insulet Corp	PODD	45784P101 US45784P1012	EC CORP	8,808 NS	$2.17M	2.351%	US
Cameco Corp	CCJ	13321L108 CA13321L1085	EC CORP	17,653 NS	$2.09M	2.263%	CA
Equifax Inc	EFX	294429105 US2944291051	EC CORP	9,431 NS	$1.97M	2.133%	US
West Pharmaceutical Services Inc	WST	955306105 US9553061055	EC CORP	7,736 NS	$1.97M	2.130%	US
Chipotle Mexican Grill Inc	CMG	169656105 US1696561059	EC CORP	46,922 NS	$1.75M	1.891%	US
TPG Inc	TPG	872657101 US8726571016	EC CORP	36,355 NS	$1.58M	1.709%	US
GE HealthCare Technologies Inc	GEHC	36266G107 US36266G1076	EC CORP	18,166 NS	$1.53M	1.657%	US
Natera Inc	NTRA	632307104 US6323071042	EC CORP	7,354 NS	$1.53M	1.656%	US
Sprouts Farmers Market Inc	SFM	85208M102 US85208M1027	EC CORP	17,240 NS	$1.27M	1.379%	US
Axon Enterprise Inc	AXON	05464C101 US05464C1018	EC CORP	2,258 NS	$1.22M	1.326%	US
Bio-Techne Corp	TECH	09073M104 US09073M1045	EC CORP	20,700 NS	$1.22M	1.322%	US
Alnylam Pharmaceuticals Inc	ALNY	02043Q107 US02043Q1076	EC CORP	3,142 NS	$1.05M	1.132%	US
Insmed Inc	INSM	457669307 US4576693075	EC CORP	6,961 NS	$1.04M	1.125%	US
ICON PLC	ICLR	G4705A100 IE0005711209	EC CORP	9,428 NS	$1.02M	1.104%	IE
IQVIA Holdings Inc	IQV	46266C105 US46266C1053	EC CORP	4,808 NS	$859.7K	0.931%	US
Bright Horizons Family Solutions Inc	BFAM	109194100 US1091941005	EC CORP	11,334 NS	$844.6K	0.914%	US
NU Holdings Ltd/Cayman Islands	NU	G6683N103 KYG6683N1034	EC CORP	53,012 NS	$794.1K	0.860%	BR
Toast Inc	TOST	888787108 US8887871080	EC CORP	28,490 NS	$778.1K	0.842%	US
Viking Therapeutics Inc	VKTX	92686J106 US92686J1060	EC CORP	21,926 NS	$742.0K	0.803%	US
Affirm Holdings Inc	AFRM	00827B106 US00827B1061	EC CORP	13,082 NS	$614.6K	0.665%	US
IDEXX Laboratories Inc	IDXX	45168D104 US45168D1046	EC CORP	882 NS	$579.2K	0.627%	US
Structure Therapeutics Inc	GPCR	86366E106 US86366E1064	EC CORP	8,335 NS	$524.9K	0.568%	US
Argenx SE	ARGX	04016X101 US04016X1019	EC CORP	296 NS	$227.0K	0.246%	NL
Duolingo Inc	DUOL	26603R106 US26603R1068	EC CORP	1,163 NS	$117.5K	0.127%	US
State Street Navigator Securities Lending Tru… State Street Navigator Securities Lending Gov…	—	— —	STIV RF	1,923.75 NS	$1.9K	0.002%	US

Issuer↕

In master

CUSIP / ISIN

Asset

Balance↕

Value↕

Weight▼

Country

Monolithic Power Systems Inc

MPWR

609839105

US6098391054

CORP

5,011 NS

$5.73M

6.199%

Johnson Controls International plc

JCI

G51502105

IE00BY7QL619

CORP

38,496 NS

$5.55M

6.013%

Cloudflare Inc

NET

18915M107

US18915M1071

CORP

28,674 NS

$4.94M

5.345%

Vistra Corp

VST

92840M102

US92840M1027

CORP

24,645 NS

$4.29M

4.639%

Targa Resources Corp

TRGP

87612G101

US87612G1013

CORP

16,879 NS

$3.98M

4.308%

Cadence Design Systems Inc

CDNS

127387108

US1273871087

CORP

12,272 NS

$3.70M

4.004%

WESCO International Inc

WCC

95082P105

US95082P1057

CORP

12,365 NS

$3.58M

3.875%

Tractor Supply Co

TSCO

892356106

US8923561067

CORP

67,722 NS

$3.51M

3.800%

TopBuild Corp

—

89055F103

US89055F1030

CORP

7,651 NS

$3.43M

3.713%

On Holding AG

ONON

H5919C104

CH1134540470

CORP

67,506 NS

$3.14M

3.397%

MSCI Inc

MSCI

55354G100

US55354G1004

CORP

5,299 NS

$3.03M

3.280%

Vertiv Holdings Co

VRT

92537N108

US92537N1081

CORP

11,469 NS

$2.92M

3.164%

Hubbell Inc

HUBB

443510607

US4435106079

CORP

5,384 NS

$2.75M

2.982%

Capstone Copper Corp

—

14071L108

CA14071L1085

CORP

252,154 NS

$2.61M

CAD

2.824%

Republic Services Inc

RSG

760759100

US7607591002

CORP

11,379 NS

$2.61M

2.821%

Dexcom Inc

DXCM

252131107

US2521311074

CORP

32,849 NS

$2.41M

2.611%

State Street Institutional US Government Mone…

—

857492706

US8574927062

STIV

2,318,498.74 NS

$2.32M

2.510%

Carvana Co

CVNA

146869102

US1468691027

CORP

6,573 NS

$2.20M

2.378%

Zscaler Inc

98980G102

US98980G1022

CORP

14,805 NS

$2.18M

2.356%

Insulet Corp

PODD

45784P101

US45784P1012

CORP

8,808 NS

$2.17M

2.351%

Cameco Corp

CCJ

13321L108

CA13321L1085

CORP

17,653 NS

$2.09M

2.263%

Equifax Inc

EFX

294429105

US2944291051

CORP

9,431 NS

$1.97M

2.133%

West Pharmaceutical Services Inc

WST

955306105

US9553061055

CORP

7,736 NS

$1.97M

2.130%

Chipotle Mexican Grill Inc

CMG

169656105

US1696561059

CORP

46,922 NS

$1.75M

1.891%

TPG Inc

TPG

872657101

US8726571016

CORP

36,355 NS

$1.58M

1.709%

GE HealthCare Technologies Inc

GEHC

36266G107

US36266G1076

CORP

18,166 NS

$1.53M

1.657%

Natera Inc

NTRA

632307104

US6323071042

CORP

7,354 NS

$1.53M

1.656%

Sprouts Farmers Market Inc

SFM

85208M102

US85208M1027

CORP

17,240 NS

$1.27M

1.379%

Axon Enterprise Inc

AXON

05464C101

US05464C1018

CORP

2,258 NS

$1.22M

1.326%

Bio-Techne Corp

TECH

09073M104

US09073M1045

CORP

20,700 NS

$1.22M

1.322%

Alnylam Pharmaceuticals Inc

ALNY

02043Q107

US02043Q1076

CORP

3,142 NS

$1.05M

1.132%

Insmed Inc

INSM

457669307

US4576693075

CORP

6,961 NS

$1.04M

1.125%

ICON PLC

ICLR

G4705A100

IE0005711209

CORP

9,428 NS

$1.02M

1.104%

IQVIA Holdings Inc

IQV

46266C105

US46266C1053

CORP

4,808 NS

$859.7K

0.931%

Bright Horizons Family Solutions Inc

BFAM

109194100

US1091941005

CORP

11,334 NS

$844.6K

0.914%

NU Holdings Ltd/Cayman Islands

G6683N103

KYG6683N1034

CORP

53,012 NS

$794.1K

0.860%

Toast Inc

TOST

888787108

US8887871080

CORP

28,490 NS

$778.1K

0.842%

Viking Therapeutics Inc

VKTX

92686J106

US92686J1060

CORP

21,926 NS

$742.0K

0.803%

Affirm Holdings Inc

AFRM

00827B106

US00827B1061

CORP

13,082 NS

$614.6K

0.665%

IDEXX Laboratories Inc

IDXX

45168D104

US45168D1046

CORP

882 NS

$579.2K

0.627%

Structure Therapeutics Inc

GPCR

86366E106

US86366E1064

CORP

8,335 NS

$524.9K

0.568%

Argenx SE

ARGX

04016X101

US04016X1019

CORP

296 NS

$227.0K

0.246%

Duolingo Inc

DUOL

26603R106

US26603R1068

CORP

1,163 NS

$117.5K

0.127%

State Street Navigator Securities Lending Tru…

State Street Navigator Securities Lending Gov…

—

STIV

1,923.75 NS

$1.9K

0.002%