Glossary — captable
Anti-dilution protection
Anti-dilution protection adjusts an investor's share price downward if the company later raises at a lower valuation (a 'down round'), preserving their economic position.
How it works
Two common forms: full ratchet (resets the investor's share price to the new lower price — very investor-friendly) and weighted average (adjusts based on the size of the down round and how much new money is raised — the market standard). Anti-dilution is triggered only on down rounds, not on every new financing.