As observed, the SPX and Copper have shown a strong positive correlation over the past few weeks, often forming tops and bottoms simultaneously.
Given that Copper recently failed to break above a long-term bearish channel upper line and has broken its structure to the downside, we might expect a similar move in the SPX.
However, when trading SPX based on this intermarket analysis, it's crucial to wait for a price confirmation in the SPX itself before taking any action.