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Ultra Fund

Filed by American Century Mutual Funds, Inc.. What this fund reported holding in its latest quarterly NPORT-P. Positions are ordered by share of the fund rather than by size, because that is what separates a conviction from a rounding error.

Positions
55
matched to a ticker
Fund size
$25.9B
the filing's own figure
Matched value
$24.7B
of the positions below
As of
2026-07-31
S000006195

What it holds

Largest share of the fund first.

Company% of fundValue
NVDANVIDIA Corp16.05%$4.1B
GOOGLAlphabet Inc6.37%$1.6B
MSFTMicrosoft Corp6.26%$1.6B
AMZNAmazon.com Inc5.93%$1.5B
AAPLApple Inc5.91%$1.5B
GOOGAlphabet Inc5.54%$1.4B
LLYEli Lilly and Co3.46%$891.5M
TSLATesla Inc3.37%$868.9M
MAMastercard Inc3.32%$855M
METAMeta Platforms Inc2.82%$728.2M
AVGOBroadcom Inc2.69%$693.3M
AMATApplied Materials Inc2.45%$632.6M
NETCloudflare Inc2.12%$546M
APHAmphenol Corp1.96%$506.5M
DDOGDatadog Inc (Pre-Reincorporation)1.71%$441.3M
CIENCiena Corp1.57%$406.1M
NFLXNetflix Inc1.55%$400.6M
MUMicron Technology Inc1.44%$370.4M
VRTVertiv Holdings Co1.43%$368.6M
SNPSSynopsys Inc1.30%$335.9M
COSTCostco Wholesale Corp1.25%$322.7M
HWMHowmet Aerospace Inc1.21%$311.6M
IBKRInteractive Brokers Group Inc1.18%$304.4M
SNOWSnowflake Inc1.06%$272.5M
PLTRPalantir Technologies Inc0.88%$226.1M
ISRGIntuitive Surgical Inc0.85%$220.1M
GLWCorning Inc0.85%$218.8M
PLPlanet Labs PBC0.80%$206M
AMDAdvanced Micro Devices Inc0.76%$196.2M
WABWestinghouse Air Brake Technologies Corp0.74%$189.6M
LRCXLam Research Corp0.68%$175.5M
ORCLOracle Corp0.66%$170.3M
AYIAcuity Inc0.63%$161.6M
FICOFair Isaac Corp0.58%$149.4M
IDXXIDEXX Laboratories Inc0.56%$143.7M
ALNYAlnylam Pharmaceuticals Inc0.55%$141.4M
ECLEcolab Inc0.54%$140.5M
WMSAdvanced Drainage Systems Inc0.52%$135.3M
VRTXVertex Pharmaceuticals Inc0.40%$103.1M
CMGChipotle Mexican Grill Inc0.32%$82M
OKTAOkta Inc0.31%$79.3M
HEIHEICO Corp0.29%$74.5M
EOGEOG Resources Inc0.29%$73.8M
DCIDonaldson Company Inc0.28%$73.4M
ZSZscaler Inc0.27%$69.6M
NDSNNordson Corp0.26%$67.9M
BKNGBooking Holdings Inc0.26%$67.3M
CTASCintas Corp0.24%$61.4M
DTDynatrace Inc0.23%$58.3M
TWTradeweb Markets Inc0.20%$51M
DOCUDocuSign Inc0.19%$47.8M
VVisa Inc0.18%$46.1M
WINGWingstop Inc. - Common Stock0.18%$46M
SPCXSpace Exploration Technologies Corp0.17%$43.5M
MSCIMSCI Inc0.15%$38.9M

Source: NPORT-P filings, via EDGAR. Positions arrive by CUSIP, and only a CUSIP verified against a ticker is kept — so this is what we could match, not everything the fund holds, and the matched value is therefore below the fund's own size. A balance is shares where the filing says `NS` and a principal amount where it says `PA`, which is why it is not labelled shares in both cases.

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