Current Situation: Trailing the S&P by Over 6 Percentage Points Year-to-date 2026, $Berkshire Hathaway(BRK.B)$ have declined 5%, while the $S&P 500(.SPX)$ has gained approximately 1.78%—a gap of over 6 percentage points. This is Greg Abel's first "report card" since officially taking the CEO reins—and the market seems to be voting with its feet, questioning whether the "Oracle of Omaha" can still deliver the magic. But as Buffett himself once said: "We will underperform in bull markets because we hold a lot of non-public subsidiaries and cash." This current headwind is precisely the crucible testing whether Berkshire's "institutional transformation" can maintain its luster. I. Four Structural Rea