The strength and breadth of BlackRock's platform generated a record $94 billion of long-term net inflows in the quarter, positive across all client and product types, and investment styles. The organic growth that BlackRock is experiencing is a direct result of the investments we've made over time to build our platform."

While the intention behind the statement was obvious: to pitch Blackrock's juggernaut ETF product platform which continues to steamroll over the active management community, leading to billions in fund flow from active to passive management every week, if not day, he made an interesting point: cash remains on the sidelines even with the S&P at record highs.

In fact, according to a chart from Credit Suisse, Fink may be more correct than he even knows. As CS' strategist Andrew Garthwaite writes, "one of the major features of the US equity market since the low in 2009 is that the US corporate sector has bought 18% of market cap, while institutions have sold 7% of market cap."