If it makes you feel better all these online calculators are way off because they look at the rise in company value but ignore dilution.

For example if you got a $1M stock grant after Anthropic’s series D round in March 2024, when the company was valued at $18.4B, your stock would be worth “only” 19.5x that today whereas the company has gone up 52x in value. That’s a whopping 63% dilution, because they have raised 4 more rounds since then and all those investors need shares.

The founders themselves have been diluted down to a ~1.4% stake.