I put this question out to TP. He didn't answer. I asked twice. Still No answer
Does a fund HAVE to buy shares in a company just because they have joined an INDEX? Let's say yes.... its part of the process.
But then we asked. Does a fund HAVE to add to their positions afterwards? These funds are ADDING shares of Lightwave. Is this a REQUIREMENT? Are they OBLIGATED to do so? Or is adding shares completely and only the result of computer algorithms?