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Paulo Macro — Crack Spreads Are the Tell

"...and No One Is Paying Attention." Refiner margins are the ignored second-derivative of crude — and, run through the inverted Covid-2020 playbook, they now point to an "upside crash" rather than a collapse.
2026-APR-07 · Paulo Macro (Substack, paid) · written note · ↗ Read · note text · actionable insights
One-line take: refiner crack spreads (refinery margins) are the "second derivative" that tells you what crude does next — and almost nobody is watching. In Covid (a >10mmbpd demand shock), cracks collapsed on "Tom Hanks has Covid" (Mar 11 2020), bounced around $5-10, then broke back above $10 in the second week of April — the tell that WTI was about to collapse (and go negative on 20 April 2020) as the pump's demand destruction fed back up the chain to the wellhead. Today is the mirror image: a >10mmbpd crude supply shock, with cracks having peaked near $60/bbl on March 20th and falling for two weeks — the equivalent (reversed) window where, instead of crude crashing, crude "moons," because demand destruction at the pump forces any upstream barrel/product/SPR to come to market rather than shut in ("invert, always invert" — Munger). "Only this is bigger and more persistent than Covid." He warns the "long refinery stocks" trade rhymes with being long tankers into the April-2020 supercontango. Macro/oil framework note — no individual equities are named, so no stock table (nothing invented; refinery/tanker names are referenced as a category only).

Key points

Crack spreads are the ignored "second derivative"

The Covid-2020 template (a demand shock)

Today, in reverse (a supply shock)

The warning on refinery stocks


Key points extracted from the paid Substack post (in transcript.txt) for personal study. Not investment advice. © Paulo Macro for source material.