# Berkshire Hathaway

Group identifier: 5493000C01ZX7D35SD85 (LEI of the parent company)  
Ultimate owner: Berkshire Hathaway (LEI 5493000C01ZX7D35SD85, GLEIF, class A) – Reason given in GLEIF: no known controlling person  
Basis of membership: GLEIF relationships – Source [A]: GLEIF – Level 2 (“who owns whom” relationships), LEI record 5493000C01ZX7D35SD85 – https://search.gleif.org/#/record/5493000C01ZX7D35SD85  
Data as of: 2026-10-21, version 2.32  
Page: https://ai-waw.com/en/companies/groups/berkshire-hathaway

## At a glance

Berkshire Hathaway – 2 companies in the register with 2 plants in 1 country (most: United Kingdom 2). Metals of the plants: nickel. Main links of the chain: processing – 2 plants. The parent company Berkshire Hathaway has no higher parent in GLEIF. Reason given in GLEIF: no known controlling person.

## Value-chain coverage

| Link | Plants | Stages |
|---|---:|---|
| Raw materials | 0 | – |
| Smelting and refining | 0 | – |
| Processing | 2 | nickel alloys – melting and processing 2 |
| Products | 0 | – |
| Recycling | 0 | – |
| End uses | 0 | – |

## Plants by country

| Country | Plants |
|---|---:|
| United Kingdom | 2 |

## Full capacity by metal and stage

Full capacity of operating single-metal plants – separately for each stage and unit; no sum across stages (a smelter and an extrusion press process the same metal) and no ownership shares in plants (next stage). Multi-metal plants – in the totals table below.

No capacity of operating single-metal plants with a unit.

## Group structure

- **Berkshire Hathaway** (corporate group; 5493000C01ZX7D35SD85)
  - Precision Castparts Corp. (intermediate company – GLEIF parent outside the register; US; LEI 0XOOAY5P5J7Q734SEC89; Consolidation relationship from GLEIF (Level 2, CC0) – class A source)
    - [Special Metals Wiggin](https://ai-waw.com/en/companies/special-metals-wiggin.md) (company; United Kingdom; LEI R3Y40G64JWR7DV74D385; Business register 00036721; Consolidation relationship from GLEIF (Level 2, CC0) – class A source)
      - Hereford (Hereford, United Kingdom) – plant; nickel alloys – melting and processing; operating; class B
    - [Wyman-Gordon](https://ai-waw.com/en/companies/wyman-gordon.md) (company; United Kingdom; LEI GOKSGVQASGB40RYZWE32; Business register 02889486; Consolidation relationship from GLEIF (Level 2, CC0) – class A source)
      - Livingston (Livingston, United Kingdom) – plant; nickel alloys – melting and processing; operating; class C

## Capacity and output of the group companies’ plants

Totals cover the full capacity (and output) of operating plants owned by the group companies, without taking shares in jointly owned plants into account; capacity attributed to the group by share will be added in the next stage. Only values in the same unit and for the same metal are added up.

The plants of the group companies have no capacity or output with a unit in the register.

## Similar groups

Similarity: common metals (weight 0.5), chain links (0.3) and plant countries (0.2) – Jaccard index; only groups with at least one common metal.

- [AMETEK Inc.](https://ai-waw.com/en/companies/groups/ametek-inc.md) – in common: nickel; processing; United Kingdom
- [Doncasters Group](https://ai-waw.com/en/companies/groups/doncasters-group.md) – in common: nickel; processing; United Kingdom
- [DN Equity GmbH](https://ai-waw.com/en/companies/groups/dn-equity-gmbh.md) – in common: nickel; processing
- [Höganäs Holding AB](https://ai-waw.com/en/companies/groups/hoganas-holding-ab.md) – in common: nickel; processing

## Data quality

- Source class of plants: A 0, B 1, C 1
- Plants verified at source: 2 / 2 (2026-10-08 – 2026-10-08)
- Ownership relationships of companies: GLEIF relationship (class A): 2 of 2; group as recorded: 0 of 2; companies with an LEI: 2 of 2
- Basis of membership: GLEIF relationships (class A); Reason given in GLEIF: no known controlling person

The group card (page and Markdown) is open to text and data mining with attribution; the JSON data – like the other JSON data of the register – is reserved as a compiled database. Relationships from GLEIF: CC0 1.0.