Ultra Fund
Registrant
American Century Mutual Funds, Inc.
Class tickers
AULDX
AULGX
AULNX
AULRX
AULYX
TWCCX
TWCUX
TWUAX
TWUIX
Net Assets
$25,789,116,616
Holdings
57
Latest Report
Jul 31, 2026
Net Assets Over Time
Holdings · 57
Export CSV
Portfolio coverage: 57 of
65 reported positions.
Showing 1–50
of 57 holdings by value
· page 1 of 2
| Holding | Symbol | Balance | Value | % of Fund | Side | Category | Open |
|---|---|---|---|---|---|---|---|
| NVIDIA Corp | NVDA | 20,619,000 | $4,139,264,250 | 16.05% | Long | EC | |
| Alphabet Inc | GOOGL | 4,613,455 | $1,642,989,729 | 6.37% | Long | EC | |
| Microsoft Corp | MSFT | 3,476,000 | $1,615,366,720 | 6.26% | Long | EC | |
| Amazon.com Inc | AMZN | 5,632,000 | $1,529,538,560 | 5.93% | Long | EC | |
| Apple Inc | AAPL | 4,932,754 | $1,523,777,038 | 5.91% | Long | EC | |
| Eli Lilly & Co | LLY | 776,000 | $891,499,840 | 3.46% | Long | EC | |
| Tesla Inc | TSLA | 2,792,000 | $868,898,320 | 3.37% | Long | EC | |
| Mastercard Inc | MA | 1,491,889 | $855,001,586 | 3.32% | Long | EC | |
| Meta Platforms Inc | META | 1,308,000 | $728,176,680 | 2.82% | Long | EC | |
| Broadcom Inc | AVGO | 1,781,000 | $693,307,680 | 2.69% | Long | EC | |
| Applied Materials Inc | AMAT | 1,246,000 | $632,556,820 | 2.45% | Long | EC | |
| Cloudflare Inc | NET | 1,957,000 | $545,963,860 | 2.12% | Long | EC | |
| Amphenol Corp | APH | 3,152,000 | $506,526,400 | 1.96% | Long | EC | |
| Datadog Inc | DDOG | 1,647,000 | $441,346,590 | 1.71% | Long | EC | |
| Ciena Corp | CIEN | 1,077,000 | $406,082,850 | 1.57% | Long | EC | |
| Netflix Inc | NFLX | 5,586,000 | $400,572,060 | 1.55% | Long | EC | |
| Micron Technology Inc | MU | 450,000 | $370,363,500 | 1.44% | Long | EC | |
| Vertiv Holdings Co | VRT | 1,526,000 | $368,635,820 | 1.43% | Long | EC | |
| Synopsys Inc | SNPS | 864,000 | $335,888,640 | 1.30% | Long | EC | |
| Costco Wholesale Corp | COST | 339,000 | $322,690,710 | 1.25% | Long | EC | |
| Howmet Aerospace Inc | HWM | 1,104,000 | $311,615,040 | 1.21% | Long | EC | |
| Interactive Brokers Group Inc | IBKR | 3,459,000 | $304,357,410 | 1.18% | Long | EC | |
| Snowflake Inc | SNOW | 929,000 | $272,457,120 | 1.06% | Long | EC | |
| Palantir Technologies Inc | PLTR | 1,837,000 | $226,061,220 | 0.88% | Long | EC | |
| Intuitive Surgical Inc | ISRG | 622,940 | $220,103,390 | 0.85% | Long | EC | |
| Corning Inc | GLW | 1,583,000 | $218,849,750 | 0.85% | Long | EC | |
| Planet Labs PBC | PL | 10,058,000 | $205,987,840 | 0.80% | Long | EC | |
| Advanced Micro Devices Inc | AMD | 412,000 | $196,173,800 | 0.76% | Long | EC | |
| Westinghouse Air Brake Technologies Corp | WAB | 652,000 | $189,640,720 | 0.74% | Long | EC | |
| Lam Research Corp | LRCX | 599,000 | $175,518,980 | 0.68% | Long | EC | |
| Oracle Corp | ORCL | 1,311,000 | $170,259,570 | 0.66% | Long | EC | |
| Viking Holdings Ltd | VIK | 1,601,000 | $167,064,350 | 0.65% | Long | EC | |
| Ascendis Pharma A/S | ASND | 664,000 | $161,956,240 | 0.63% | Long | EC | |
| ACUITY BRANDS | AYI | 492,000 | $161,567,880 | 0.63% | Long | EC | |
| Fair Isaac Corp | FICO | 133,000 | $149,355,010 | 0.58% | Long | EC | |
| IDEXX Laboratories Inc | IDXX | 257,000 | $143,680,990 | 0.56% | Long | EC | |
| Alnylam Pharmaceuticals Inc | ALNY | 688,000 | $141,397,760 | 0.55% | Long | EC | |
| Ecolab Inc | ECL | 506,000 | $140,480,780 | 0.54% | Long | EC | |
| Johnson Controls International plc | JCI | 940,000 | $137,860,400 | 0.53% | Long | EC | |
| Advanced Drainage Systems Inc | WMS | 977,000 | $135,294,960 | 0.52% | Long | EC | |
| Vertex Pharmaceuticals Inc | VRTX | 216,000 | $103,053,600 | 0.40% | Long | EC | |
| Chipotle Mexican Grill Inc | CMG | 2,204,000 | $82,032,880 | 0.32% | Long | EC | |
| Okta Inc | OKTA | 559,000 | $79,338,870 | 0.31% | Long | EC | |
| HEICO Corp | HEI | 209,000 | $74,479,240 | 0.29% | Long | EC | |
| EOG Resources Inc | EOG | 496,000 | $73,750,240 | 0.29% | Long | EC | |
| Donaldson Co Inc | DCI | 779,000 | $73,412,960 | 0.28% | Long | EC | |
| Zscaler Inc | ZS | 460,000 | $69,552,000 | 0.27% | Long | EC | |
| Nordson Corp | NDSN | 228,000 | $67,893,840 | 0.26% | Long | EC | |
| Booking Holdings Inc | BKNG | 349,000 | $67,322,100 | 0.26% | Long | EC | |
| Cintas Corp | CTAS | 300,000 | $61,389,000 | 0.24% | Long | EC |