Peace, maybe: how markets price it

Markets rallied in a jumpy, nervous fashion on 26 May on rumours that a comprehensive peace framework between Washington and Tehran, mediated by the Swiss, was close. A careful, scenario-weighted look at the oil price suggests traders are pricing a diplomatic hope that the physical market does not support.

Weighting the odds

Commodity models attach explicit probabilities to three outcomes. A durable, verified peace that reopens the strait within thirty days gets 25 per cent. A long diplomatic stalemate with continued low-level harassment of shipping gets 55 per cent. A return to naval strikes gets 20 per cent. Weighting the three gives a fair value for Brent of between $102 and $106 a barrel, well above the sub-$90 prices that speculative futures algorithms were chasing.

The arithmetic cuts against the rally. For Brent to be fairly priced below $90, the market would need to give peace far better than a one-in-four chance, or assume that even the good outcome sends prices much lower than the physical market allows. Nothing yet agreed supports either assumption. Most of the probability sits on the stalemate, and a stalemate leaves shipping exposed and insurers wary.

The distribution is also lopsided. The escalation scenario carries only a fifth of the weight, but the price it implies sits far above the others, while even the best case has a floor set by empty inventories and slow repairs. A market selling crude on peace talk is therefore giving up more on the upside than it gains on the downside. Options traders tend to see this first, and the premium paid for calls well above today's price is the cleanest measure of how much weight the market still puts on the bad outcome.

Who is doing the talking

The Swiss channel has history behind it. Switzerland has represented American interests in Tehran since the two countries broke off relations in 1980, and it has carried messages between them through every crisis since. That makes the rumour plausible as a sign of contact. It says little about whether either government can deliver what a framework would promise, and in particular whether Iran's forces at sea will follow instructions from its negotiators. Hardliners on either side have reasons to spoil an agreement, and a single attack on a tanker after a signing would reset every underwriter's clock.

How headlines move futures

The rally has a mechanical side. Trend-following funds and algorithms that trade on news flow buy and sell futures on headlines rather than on cargoes, and in a thin, nervous market they can move prices several dollars in a session. Those moves feed on themselves until physical buyers, who need crude delivered to a refinery, refuse to follow. The gap between futures prices and what refiners actually pay for prompt cargoes is where that tension shows first.

The 1991 comparison

Bulls on peace can point to precedent. When the air war against Iraq began in January 1991, crude fell by about a third in a single session as traders concluded the worst was over. The difference lies in what stood behind the price. By then Saudi Arabia had already raised output to replace much of the lost Iraqi and Kuwaiti supply, so the fear premium could vanish overnight. This time most of the world's spare capacity sits behind the closed strait, and nothing can replace it until ships move.

The nuclear deal of 2015 is a better guide to how long diplomacy takes to reach the oil market. A framework was agreed at Lausanne in April of that year, the final agreement followed in July, and sanctions were lifted only in January 2016, after inspectors had verified Iran's side of the bargain. Iranian exports rose quickly once that happened. The lesson is that a signed text starts a clock rather than stopping one, and traders who bought the headline in April waited the better part of a year for the barrels.

Paper barrels, real mines

Speculators who sell crude short on unconfirmed peace talk keep forgetting what is actually happening in the Persian Gulf. Even with the best possible deal, clearing mines, getting insurers to write cover again and restarting shut-in fields will take months.

Kuwait offers a timetable. After the 1991 war, clearing mines from its waters took months, the last oil-well fires were not put out until November, and output took well over a year to return to pre-invasion levels. Insurers will want weeks of quiet before cutting war-risk premia, and governments that have drained strategic stocks will want to refill them, adding demand just as supply returns.

Who gains from the gap

The distance between rumour and reality creates opportunities for those who can use it. Producers outside the Gulf, American shale companies among them, can lock in high prices for next year's output by selling futures into any spike. Consumers of fuel, such as airlines and haulage firms, can buy protection on the dips caused by peace headlines. The losers are funds that chase each headline in both directions, paying away the difference in trading costs and poorly timed entries.

The case against this column is that markets are forward-looking and a credible deal would cut prices well before the first tanker sails. Insurers respond to political signals as well as to incidents, and a public commitment from both governments could bring premia down faster than in past conflicts. That is possible, but the rumour so far has no text, no verification mechanism and no word on mines. Until those appear, the insurers and refiners who deal in physical cargoes have no reason to act on it, and futures that run ahead of them tend to be dragged back.

The call would change if a deal came with verified mine clearance and a quick return of insurance cover, or if demand weakened faster than supply recovered. The things to watch are the text of any agreement, the war-risk rates quoted in London and the spread between prompt and later Brent contracts. Anyone selling oil on rumours of peace is probably early: damage in the Gulf should keep Brent near a hundred dollars for months after any deal is signed.