A recent CB Insights study highlighted some interesting numbers about the “fintech boom” that industry experts and journalists have been discussing over the past year or so. CBI found that a large source of fintech growth has come from banks not only increasing adoption of non-proprietary technology internally, but also increasing the frequency and size of investments in outside tech firms.The numbers are stark: fintech has seen an increase from $3.1 billion invested over 560 investments in 2013 to more than $14.4 billion over 775 investments in 2015.