VOO is up since the iRobot acquisition was announced, which would have resulted in the effective price increasing over time, the opposite of what they want. Na

VOO is up since the iRobot acquisition was announced, which would have resulted in the effective price increasing over time, the opposite of what they want. Nasdaq is ~ flat since then, which also would not capture the economic dynamic desired (some tech valuations have fallen). The Nasdaq Tech 100 does an even worse job at capturing the dynamic: it's up nearly 50% since the deal was announced. You'd have to use something a lot more specific, like a basket of specific stocks or some very small sub-index. But then a smaller basket could have a lot more volatility that may be endogenous to a small set of companies, and someone has to get paid for that volatility.