Investors often assume that rising oil prices signal strong economic demand.

But history shows something very different.

When oil rises too quickly, it stops being a growth signal —
and becomes a systemic cost shock.

The data is clear:

During sharp oil spikes, the correlation between Brent crude and the S&P 500 turns negative.

This means equities are no longer supported by the same macro forces.
Instead, they begin to reflect stress in the system.

Why It Matters Now:
With geopolitical risks around the Strait of Hormuz rising,
the probability of a sudden oil spike is increasing.

If that happens, the market will not respond linearly.

It will transition into a different regime.

Closing:
Oil is not just an input.
It is a trigger for repricing risk across all assets.