By comparing home prices to their long-run, sustainable levels, which are supported by local market fundamentals such as disposable income, the MCI categorizes home prices in individual markets as undervalued, at value or overvalued.

I use both fundamentals and technical analysis to determine my trades.

In many cases they can completely miss what is interesting or fundamentally valuable with a deal, especially if you not looking at the potential value add in the marketplace.

The two systems are fundamentally different.  

Secondly the stock market is based off of transactional volume and retirement accounts of even a large number of individuals is not going to have that great of an effect when understanding the current dynamics of stock market fundamentals.

No spring chicken, over the last couple of years I've sold homes and investment properties to more millennials than any other demographic and I attribute this to a fundamental strategy - positioning myself as a real estate professional knowledgeable of the local market and its conditions.

These faulty assumptions were often encouraged by their buyer's agents even though the  agents knew very well that the fundamentals did not support the comps they were seeing (and despite the fact that agents have a fiduciary duty towards their clients).  

I suspect that since you are a math guy, you will see the fundamentals of this sooner than later.

Fundamentally, in this story, I would earn your fee for you, so I can buy the assets I had to do all the work on to get to in the first place.  

The strategy is fundamentally different than paying off a traditional mortgage in that you use your HELOC as a place to store your money.