Measured by sheer speed and violence, the stunning crash of Silicon Valley Bank has left even those who've lived through decades of ups and downs in the market floored. On Wednesday, SVB was a 40-year old Valley institution, quietly banking (by some estimates) half of the Valley's startups. By Friday, it was done, shut down by California regulators. Now startups, VCs and analysts are piecing together how the bank run happened, why no one could stop it, and who is at risk next.
