The chart posted is a stock chart tracking the price of the common stock in his company, and it is not a fund performance chart. For all we know the fund liquidated its real estate investments at a profit and the proceeds were distributed to the shareholders, the number of whom never seemed to exceed 3000 souls.
I have no clue as to Kupperman's trading acumen. It is true that brilliant analysts are very often poor traders. Most people, in fact, undoubtedly including most of the people posting to this forum, are poor traders.
As to the comments about the price of common stock in his company, it may be that the company has or is in the last stages of failure. Or it may be that the company qaccomplished its goals and has divested itself of its assets. As Harris Kupperman himself has said, "Companies can and do go bankrupt. Go to the library and look at a list of large companies from 1950—very few of them still exist. Go back another twenty years. Almost none of the companies from 1930 still exist."
As a matter of fact, very few human beings from 1930 still exist.
One who takes risks and fails is not by virtue of that failure a fraud.
One who accumulates a high 8-figure liquid net before the age of 40 is not a failure when that fortune has been accumulated legally.
And one who takes a company public only to see the price of the common stock languish in the pink sheets is often guilty of nothing more than failing to excite a market in the stock of said company. The majority of companies end up in that position. And that chart was not his investment performance, it was the price of his company's common stock.
emini is likely going to test that June 8, 2020 high again. It's main task is to get above that level and stay above that level so as to force the S&P 500 stocks to gap open above that level. That may or may not happen. But that is the emini's task. Should the attempt fail, or not even be made, then I would look for price to pullback and test the levels of the lows of July 9-10 and 14, 2020 ($3105-$3120).
It is a stock chart, not a fund performance chart.