Goldman Sachs' trading desk points out that the internal structure of US stock momentum factors is undergoing significant changes. The report states that the overlap between 12-month winners and 3-month winners has fallen to multi-year lows, while th

2026-08-20

Goldman Sachs' trading desk points out that the internal structure of US stock momentum factors is undergoing significant changes. The report states that the overlap between 12-month winners and 3-month winners has fallen to multi-year lows, while the overlap between 12-month winners and 3-month losers is nearing high levels, causing the 3-month momentum portfolio to begin deviating significantly from the 12-month momentum portfolio. This change is already reflected in sector weighting. Software currently has the largest weighting on the 3-month momentum bullish side and also the largest weighting on the 12-month momentum bearish side. On the same trading day, semiconductors fell by about 6.5%, while software rose by about 1%, indicating that market sentiment regarding "who the new winners are" within the technology sector is shifting.