A death cross occurs when the 50-day SMA crosses below the 200-day SMA, signaling that short-term momentum has turned negative relative to the long-term trend. It is the bearish counterpart to the golden cross.
What It Signals
The death cross indicates that selling pressure has become dominant enough to push the intermediate-term average below the long-term average. It often coincides with or follows a period of extended price decline and can signal the beginning of a prolonged bear market.
Historical Performance (S&P 500)
Death crosses have preceded major declines: the September 2000 death cross preceded the dot-com crash (-49% peak-to-trough), the December 2007 death cross preceded the financial crisis (-57%), and the March 2020 death cross occurred near the COVID bottom. However, several death crosses (like 2015 and 2016) were followed by quick recoveries, making it an imperfect predictor.
Key Context
Like the golden cross, the death cross is a lagging indicator and may occur after a significant portion of the decline has already happened. The signal is stronger when accompanied by high volume and confirmed by other indicators (RSI below 50, bearish MACD, widening credit spreads).
Trading Application
Most professional traders use the death cross as a regime filter rather than an exact trading signal β they shift to a more defensive posture (reducing long exposure, increasing hedges, favoring cash and bonds) rather than shorting aggressively at the cross.