Ask HN: Does Y Combinator participate in A and beyond rounds?
I have always been curious if YCombinator participates in Series A rounds to keep their pro-rata, or do they eat the dilution? Any YC founders willing to say?
For a list of most, if not all, the companies YC has invested in take a look here: http://www.crunchbase.com/company/y-combinator and see if you can find any that aren't listed as "Angel" investments.
if you're only interested in absolute return, then dilution doesn't matter, only the value increase.
not that you asked, but as an angel myself i generally don't take my prorata - the startups that aren't doing that well, i don't want it, and the ones that are doing very well, i can't afford. also, the risk tradeoff (do i want to invest a marginal dollar in a new startup or to invest it in another startup? i want to intelligently maximize risk, i think.)