Quick analogy on using hedged equity positions as a market volatility indicator.
Think of the relationship between hedged equity funds/dealers.
These 3 funds/dealer positions represent the cars on a highway.
The highway is the market and has 2 directions.
This indicator tracks where each of those funds are on the highway at a given time and which direction they are travelling and how fast/slow.
Alone, these funds would not have an effect on overall markets, but due to the size and popularity of tracking them has grown over the years, more cars (funds) are getting on the highway at the same time & direction.
Imagine you see 50 cars going along in a pack, you radar one cars speed and position, you know the 50 cars are going relatively the same speed and direction now.
it just takes noticing 1 car to slow down cause they can't see over the hill which will cause more slower cars and eventually traffic jam (volatility).
So when someone tells you that you can't know market sentiment from a couple hedged equity funds. Send them here.