The biggest “players” in the semiconductor industry are the equipment manufactures. Without them no production can be possible and technological progress will stop.
- Lam Research
- Applied Materials
- KLA and others. The full list is below
On the product side the top 3 manufacturers are:
However, it really depends on the segment and the country. In the United States, these are some of the ones with more than $5B market cap. I’m certainly leaving many of them out:
Then there are fabs like TSMC etc. and manufacturing equipment like Applied Materials.