According to historical data statistics since 1950, there is a significant pattern in the US stock market: if January can achieve a closing gain, the probability of a positive annual closing reaches 87%, with an average return rate of 13.3%. Excitingly, the market performance in January 2026 has already established an upward trend, which is undoubtedly a great opening signal. If we turn our attention to the S&P component stocks, the indicative effect of this January barometer is even more astonishing, and the specific trend can be referred to in the chart below. It is particularly worth noting the two stocks $DLR and $DHI; data shows that as long as they record gains in January, the probability of an annual increase reaches 100%. Investors might consider referring to the clues in the chart and conducting in-depth research based on them.