# Ultra Fund

Ultra Fund is a registered fund series of American Century Mutual Funds, Inc. (series S000006195). Net assets $26.6B as of 2026-04-30.

## Profile

- Series ID: S000006195
- Registrant: American Century Mutual Funds, Inc.
- LEI: F6OVJ18MFLNHYYI4ZV69
- Net assets: $26.6B
- Total assets: $26.6B
- As of: 2026-04-30

## Advisers

- [American Century Investment Management, Inc. (Advisor)](https://search.stillhousedata.com/firm/105778)

## Top holdings (66 reported)

_Showing 15 of 66 holdings by value._

| Holding | Ticker | Value | % of fund |
| --- | --- | --- | --- |
| [NVIDIA Corp](https://search.stillhousedata.com/security/67066G104) | — | $4.1B | 1547.35% |
| [Apple Inc](https://search.stillhousedata.com/security/037833100) | — | $2.2B | 821.63% |
| [Amazon.com Inc](https://search.stillhousedata.com/security/023135106) | — | $2.0B | 767.57% |
| [Alphabet Inc](https://search.stillhousedata.com/security/02079K305) | — | $1.8B | 667.56% |
| [Microsoft Corp](https://search.stillhousedata.com/security/594918104) | — | $1.6B | 599.40% |
| [Alphabet Inc](https://search.stillhousedata.com/security/02079K107) | — | $1.5B | 575.78% |
| [Broadcom Inc](https://search.stillhousedata.com/security/11135F101) | — | $1.2B | 437.00% |
| [Tesla Inc](https://search.stillhousedata.com/security/88160R101) | — | $1.1B | 400.67% |
| [Mastercard Inc](https://search.stillhousedata.com/security/57636Q104) | — | $872.0M | 327.89% |
| [Meta Platforms Inc](https://search.stillhousedata.com/security/30303M102) | — | $800.4M | 300.97% |
| [Netflix Inc](https://search.stillhousedata.com/security/64110L106) | — | $656.2M | 246.76% |
| [Costco Wholesale Corp](https://search.stillhousedata.com/security/22160K105) | — | $546.8M | 205.63% |
| [Applied Materials Inc](https://search.stillhousedata.com/security/038222105) | — | $491.5M | 184.83% |
| [Vertiv Holdings Co](https://search.stillhousedata.com/security/92537N108) | — | $447.4M | 168.24% |
| [Eli Lilly & Co](https://search.stillhousedata.com/security/532457108) | — | $434.6M | 163.42% |

## Net asset history

| Report date | Net assets |
| --- | --- |
| 2026-04-30 | $26.6B |
| 2026-01-31 | $26.3B |
| 2025-10-31 | $28.2B |
| 2025-07-31 | $26.4B |
| 2025-04-30 | $23.0B |
| 2025-01-31 | $26.7B |
| 2024-10-31 | $25.1B |
| 2024-07-31 | $24.6B |

## More

- [Registrant: American Century Mutual Funds, Inc.](https://search.stillhousedata.com/registrant/100334)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/fund/S000006195.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.