Mad May Returns: The $90 Oil Spike That Exposed Who Really Runs the Market#

On May 7, 2026, WTI crude hit eighty-nine dollars a barrel. Within a day, on whispers of a US-Iran peace deal, it cratered four dollars. The financial press pounced — CNBC drew the parallel to 2008 within hours, Reuters led with the whiplash reversal — and they landed on the obvious analogy: May 2008, when oil prices whipped around like a penny stock on methamphetamines, surging toward their all-time peak of a hundred and forty-seven dollars before the whole thing blew apart.

The analogy works — but not for the reason most people think. What made May 2008 significant wasn’t the price tag. It was what happened to the futures curve — the hidden plumbing of the market — during one extraordinary week. What happened that week was like walking into your house and catching a burglar mid-heist, silverware already in his bag. It was the moment the oil futures market accidentally showed everyone who was really running the show.

Before the Event#

To understand why the events of May 2008 matter, you need to know what the futures curve looked like before everything went sideways.

For most of the great oil rally of 2007–2008, the market was in backwardation: oil for delivery next month cost more than oil for delivery six months or a year from now. As we covered in earlier chapters, defenders of market efficiency held up this backwardation like a trophy. It proved, they said, that prices reflected genuine physical tightness. If speculators were pumping prices up, we’d see contango — near-month prices jacked above distant-month prices, the gap representing a speculative premium.

Backwardation was their alibi.

But backwardation in a financialised market isn’t what it seems. We’ve already shown that index-fund money, routed through swap dealers, enters the curve at multiple maturities and creates co-integration effects that can sustain backwardation even when speculative positioning is massive. The curve shape, put simply, has become unreliable as a diagnostic. It tells you what the market looks like. It doesn’t tell you what’s moving it.

What happened in May 2008 was the diagnostic falling apart in real time — the moment the mask slipped.

The Event#

I’ve heard three versions of what set it off. The details differ in ways that don’t matter. What matters is what followed.

A large number of speculative traders had been running the same bet: long the near-month contract, short the distant-month contract. A time-spread trade — a wager that backwardation would hold or deepen. It’s a bet that the front of the curve will outrun the back. When enough traders pile into this position at the same time, their collective weight actually helps maintain the backwardation — a self-reinforcing loop that looks, to the casual observer, like proof of real physical tightness.

Then, over a handful of days, the trade blew up. What triggered it is debated — margin calls, a mood shift, a cascade of stop-losses — but the mechanics aren’t. Traders long the near month dumped their positions. Traders short the distant month scrambled to cover. Near-month prices dropped. Distant-month prices climbed.

The curve flipped. In a matter of days, the market swung from backwardation into full contango.

Let me spell out what that means. A market that had been pricing oil for immediate delivery above oil for future delivery suddenly started pricing immediate delivery below future delivery. The entire term structure — the relationship between prices at every point from one month to three years out — was reshaped. Not gradually. Not over weeks. In days.

No fundamental shift in supply or demand happened during this period. No pipeline got bombed. No hurricane hit. No OPEC minister made a surprise move. The physical world of oil — tankers, refineries, wells, storage tanks — kept humming along exactly as it had the week before.

The only thing that changed was what the speculators were doing.

What the Evidence Shows#

Think about what this means.

The defenders of market efficiency had spent months waving backwardation around as proof that speculation wasn’t warping prices. Backwardation, they insisted, was the fingerprint of a physically tight market — driven by supply and demand, not financial flows. Now, in a few short days, that fingerprint had been wiped clean and replaced by its mirror image, and the only visible cause was the coordinated unwinding of speculative bets.

Here’s the thing: if speculative positioning can flip the curve from backwardation to contango in days, then speculative positioning was helping to create the backwardation in the first place. You can’t have it both ways. You can’t claim that backwardation proves speculation doesn’t matter and then watch speculation obliterate the backwardation without rethinking your entire argument.

That’s the forensic power of the Mad May event. Under normal conditions, speculative influence on the curve is invisible — a slow, constant pressure that’s indistinguishable from fundamental forces. Think of a pipe carrying water in one direction at a steady rate. You can’t tell whether the flow comes from the reservoir or from a hidden pump. But when the pump reverses — when the speculative current suddenly runs backward — the disruption is impossible to miss. The pipe shakes. The gauges go haywire. Everyone can see that something besides the reservoir was driving the pressure.

The reversal revealed the flow.

The Doublethink, Revisited#

Remember the analyst from Chapter 4.1 — the one who declared in the first half of his presentation that speculation couldn’t affect oil prices, then spent the second half describing exactly how speculative positioning had reshaped the futures curve? The Mad May event is the empirical proof of what that analyst was inadvertently confessing.

I talked to several market participants after the event. Their reactions followed a pattern I’d seen before. In private, they freely acknowledged that the curve flip was driven by speculative unwinding. They walked through the mechanics in detail — who was positioned where, how the cascade started, how the stop-losses amplified it. In these conversations, they were sharp practitioners with a clear-eyed grasp of market microstructure.

In public — in their research notes, their TV appearances, their testimony before regulators — they snapped back to the party line. The oil market was driven by supply and demand. Speculation was background noise. Backwardation proved it. The fact that backwardation had just been blown up by speculation? Not addressed.

This isn’t ordinary hypocrisy. It’s institutional conditioning. The people who inhabit the oil-trading ecosystem have been trained, promoted, and paid within a framework that treats market efficiency as gospel. Questioning that gospel isn’t just intellectually uncomfortable — it’s career suicide. If oil prices are set by supply and demand, then the whole apparatus of fundamental analysis — the teams of analysts, the demand models, the supply forecasts — is justified. If oil prices are substantially shaped by financial flows, then a big chunk of that apparatus is, at best, telling an incomplete story.

Nobody torches their own house. Especially when the mortgage payments are still coming due.

The Goldman Timeline#

One more detail worth flagging — not as proof of causation, but as a coincidence that’s hard to ignore.

In the weeks leading up to Mad May, Goldman Sachs published a widely circulated forecast predicting oil would hit $150 to $200 a barrel. The forecast was everywhere. Newspapers quoted it. Trading floors buzzed about it. Politicians repeated it. It became load-bearing infrastructure in the oil market’s narrative — a signal, from one of the most powerful institutions in global finance, that prices had a long way left to climb.

I’m not going to argue that Goldman’s forecast caused the speculative positioning that led to the Mad May curve flip. Causation in markets is almost never that tidy. But the timeline is suggestive. A major investment bank tells the world oil is going to $200. Traders position accordingly — long the near month, short the distant month, betting on continued backwardation and more upside. The trade gets crowded. And when it unwinds, the curve warps in a way that reveals, with uncomfortable clarity, how much of the market’s behaviour was driven by financial positioning rather than physical reality.

The narrative shield we examined in Module One and the bubble pathology we’re examining now aren’t separate things. They’re connected. The stories banks tell about where prices are going shape the bets traders place, and the bets traders place shape the prices that make the stories look true. It’s a feedback loop, and May 2008 was the month the loop became visible.

What Comes Next#

We have our theory — curve co-integration — and we have our evidence — the Mad May curve flip. Together, they show that speculative positioning can reshape the futures curve and, through it, push spot prices around, without anyone needing to hoard a single barrel of physical oil.

But how unusual is this? Is the oil market of 2007–2008 a freak event, a one-time glitch in an otherwise efficient system? Or does it fit a pattern we’ve seen before — in other markets, with other commodities, with consequences people only understood after the fact?

The next chapter argues it fits a pattern. The pattern is called a bubble. And the closest historical parallel isn’t tulips or railways. It’s the Nasdaq.