LVMH Says the Iran War Cost It a Point of Growth. Now Watch the CAC 40 Turn Inside Out

Paris is trading near record highs, and the composition of that record is a war trade.

Six months of conflict have rebuilt the CAC 40 from the inside. Per Euronext's index composition, TotalEnergies carries a weight of 9.52% — the single largest in the index, ahead of Schneider Electric at 7.57% and LVMH at 6.63%. The benchmark's biggest constituent is a company whose year was made by an oil price the war created.

With Washington and Tehran now within reach of a deal on the Strait of Hormuz, that arithmetic is starting to run backwards.

The cost, quantified by the company that paid it

LVMH gave the number in its second-quarter results. Group revenue rose 3% organically to €19.52 billion — but 4% excluding the impact of the conflict, with the company pointing to weaker European spending where tourism has been hit by the Iran war, and saying existing geopolitical and economic disruption had been amplified by the war in the Middle East.

A full percentage point of organic growth at the world's largest luxury group, attributed to a waterway 5,000 kilometres from Paris. That is the rotation trade stated in a company filing rather than inferred from a chart.

The detail underneath was mixed: fashion and leather goods, LVMH's largest division, returned to growth at €8.9 billion, up 1% after a 2% decline the prior quarter — but short of the 1.7% analysts expected. LVMH shares fell 1.5% on the print while Kering rose about 2%. RBC Capital Markets framed the question as whether the division can meet full-year expectations against a tougher third-quarter comparison, calling that necessary for the stock to start working.

Sell-side positioning has already moved. Oddo BHF reaffirmed outperform and lifted its target from €585 to €695, noting the stock trades below 20 times 2028 earnings. Deutsche Bank raised its target from €635 to €715, calling 2026 a decisive year in which growth gaps between major brands should narrow.

The rotation is already visible

This is no longer hypothetical. Brent fell 4.7% in a recent session from a prior close of $83.77 to a low of $78.77 before settling near $79.82, as easing tensions, normalising Hormuz flows and progressing US-Iran talks actively removed the risk premium — and analysts project a significant global oil surplus for 2026.

Critically, that crude selloff happened against a powerful equity rally, with the S&P 500 up 1.7%, the Nasdaq 2.2% and the Dow 1.8%: a textbook risk-on rotation moving capital out of energy and commodity safe havens into growth assets.

Paris has run the same play before, in both directions. In late June, as shipping through the Strait showed signs of improving, LVMH rose 1.9%, Hermès 1.5% and Kering 1%, Safran gained 2.2% — and TotalEnergies fell 1.8%. On 3 March, as strikes intensified and Iran warned it could target transiting ships, LVMH fell 1.9%, Kering 3.3% and BNP Paribas 4%, while TotalEnergies rose 0.6%. By 23 March the index hit a seven-month low of 7,544, with Safran down 2.9% and Thales 2.4%. The Paris correction from pre-war levels reached roughly 13%.

Brent's 52-week range tells the rest: $58.72 to $126.41.

Count the weights

On the losing side of a deal: TotalEnergies at 9.52%, plus the aerospace and defence complex — Airbus 5.47%, Safran 5.09%, with Thales below them. Call it just over 20% of the index.

On the winning side: luxury, with LVMH 6.63%, L'Oréal 4.80%, EssilorLuxottica 3.69% and Hermès 2.92%, is roughly 18% alone. Add BNP Paribas at 4.98%, AXA 4.14% and Société Générale 2.50%, and it approaches 30%.

On weight, de-escalation is net positive for the index. But the headline print will conceal violent movement underneath, and anyone benchmarked to the CAC has been long the war whether they chose to be or not.

Rates are the real transmission

The barrel is the visible channel. Monetary policy is the consequential one.

The energy shock pushed French inflation from 0.3% in January to 0.9% in February and forced a repricing of ECB expectations — futures now imply at least two further 25 basis point hikes by year end, against earlier expectations of no moves at all before the conflict escalated.

That is what has been crushing the domestic economy. Construction PMI fell to 38.2 in June from 39.6 in May, deep in contraction and shrinking for a fourth consecutive year, taking Vinci down 2.1% on the print. The composite PMI hit a five-month low of 48.3 in March.

If the energy premium drains, the hiking path becomes questionable — and that, not the oil price, is what would re-rate French banks, construction and domestic consumption.

What breaks the thesis

Ryan McKay, director of commodity strategy at TD Securities, argues Iran is unlikely to accept any deal without control of the Strait, making failure highly likely, and that export upside is minimal even under a comprehensive agreement because flows already match the current production recovery. Mines remain a major physical obstacle, with Tehran only weighing whether to let European states clear them. Iran continues to deny direct talks with Washington while acknowledging progress with Oman — the residual uncertainty keeping a floor under crude. IBT has covered Trump's dismissal of Iran's public Oman talks and his claim the route is already controlled by the US Navy.

Defence also has drivers of its own. Thales fell 1.2% in that June session not because of Hormuz but because European defence names came under pressure after Rheinmetall plunged on reports Berlin might withdraw warship funding. Rearmament budgets don't unwind because one waterway reopens.

And the problem no deal fixes

France's state budget deficit widened to €106.8 billion in January–June 2026 from €100.4 billion a year earlier, with revenue up 3.7% to €184.6 billion against expenditure up 5.4% to €240.5 billion.

Expenditure growing at half again the rate of revenue is not a war problem. It is the constraint that will still be there when the tankers move.

This is market analysis, not investment advice.