Stock prices are now largely 'designed' by a handful of asset managers rather than reflecting a company's actual value.
April 1, 2026
Original Paper
Price Has No Reference Point: A Groupality Theory of CFG Price Design — DiD Evidence from S&P500 Inclusions
SSRN · 6462160
The Takeaway
In markets where the 'Big Three' (BlackRock, Vanguard, State Street) own over 40% of the S&P 500, their internal structural moves carry 12 times more weight in determining a stock's price than the company's actual earnings. This suggests the stock market has shifted from a discovery tool for value into a managed system controlled by massive index holders.
From the abstract
This paper presents and tests a single hypothesis: under high-concentration regimes — defined as markets in which the Big Three asset managers (BlackRock, Vanguard, and State Street) collectively hold more than 40% of S&P 500 market capitalization — price dynamics may be dominated by the structural operation of Capital Finance Groupality (CFG), rather than by the discovery of intrinsic value. Using Difference-in-Differences (DiD) methodology on S&P 500 index inclusions (treated n=162, co