Global stock indices climbed to fresh highs this week as markets reacted to optimism about a possible U.S.-Iran peace agreement. Yet Barclays strategist Emmanuel Cau flagged a key caveat: for the advance to become broad-based and sustained, the reopening of the Strait of Hormuz and investment flows beyond the semiconductors complex are likely required.
In a note published Thursday, Cau argued that the current upswing has a narrow leadership profile. He wrote:
"The semis trade is arguably starting to look extended, so wider market breadth and a continued melt-up in equities are contingent on tangible progress regarding the reopening of the Strait of Hormuz,"
Barclays noted several factors supporting the market's rally. Fear of missing out remains a strong behavioral driver, money supply increases are providing liquidity momentum, and first-quarter corporate results have outpaced estimates. Barclays attributed much of the earnings surprise to strength in AI and technology names, writing that these results were "owing largely to strength in AI/Tech names."
The strategist also highlighted a political element reinforcing market sentiment: expectations that the U.S. administration has incentives to seek a swift resolution ahead of a potential meeting between Xi and Trump next week. That dynamic has strengthened what Cau described as the market's "de-escalation bias."
Despite the upbeat tone, Barclays warned that the strategic backdrop remains fragile while the Strait of Hormuz is still closed. The bank said the energy shock caused by the disruption has been managed so far largely through aggressive inventory drawdowns, but those buffers are being depleted quickly. Barclays cautioned that the risk of demand destruction is rising incrementally and emphasized that "the clock is ticking."
Should a peace agreement be reached, Barclays expects European equities to see tactical gains, given their marked underperformance since the conflict began. In that scenario, the bank identified consumer-exposed and rate-sensitive stocks as the most likely to rebound.
On a longer-term, strategic basis Barclays maintained its regional preferences: the United States, Japan, and emerging markets remain preferred to Europe, reflecting the bank's view of where durable opportunity lies if geopolitical conditions change.