These statistics are very meaningful because of YC's transparency. The math is simple: YC has invested in 511 companies, this calculation uses an investment of $18,000 (the max YC investment) per company, equaling $9,198,000 total YC investment. YC investment results in an average of 6% ownership, 6% of $13.7B is $822,000,000. That ROI is phenomenal.<p>I personally believe YC is in a more enviable than Sequoia. Further, YC or at least the partners are in a position to participate in future rounds of funding for the YC companies, of course they will likely be paying a lot more for a lot less at that point...just like Sequoia.