It's a rare occasion when a VC investor wholly funds an investment round for a company—no surprise, given the size of most VC funds. Because of this, it could be argued that co-investment is the most important aspect of the venture capital ecosystem, allowing investors to diversify their portfolios with smaller investments and enabling startups to gain insights and direction from a collection of industry professionals.
Like with people, the personalities of various firms don’t always mix. There are VCs, however, that have found other firms that they do like to work with, whether it makes sense on an industry-specialty level, or because partners at each had previously worked with each other in past roles.
Every Batman needs a Robin, and here is a look at the most active VC investors of 2015, along with the co-investor(s) they participated in deals with the most: