Brent Sinks to $90 (July 2026): US and Iran Pause Strikes for a Second Day — Why the Loonie Didn't Rally at $100 or Break at $90

The $100 barrel lasted one session. After the US and Iran both stopped firing over the weekend of 25–26 July 2026 — a second consecutive day without strikes, ending two weeks of nightly attacks — Brent slid through Monday's session to around $90.5 a barrel, down roughly 6.5% on the day and about $10 below the $100.69 close of 23 July, with WTI near $83.8. Here is the part that matters more than the price: not one extra barrel has moved. The US naval blockade of Iranian ports around the Strait of Hormuz "remains in full effect," and transits were still running near 15 a day against a pre-crisis baseline of about 88. And yet the Canadian dollar barely flinched — USD/CAD sat at 1.4097, essentially unchanged, having refused to rally at $100 and now refusing to break at $90.

That symmetry is the whole argument for a fundamental currency read over a price-only one. A naive model says oil down, loonie down. But CAD sits where three of the five factors collide, and on Monday they pointed in opposite directions with almost perfect cancellation: the commodity factor turned negative on a $10 slide in crude, the risk factor turned positive because a de-escalation is risk-on and CAD is pro-cyclical, and the rate factor cut against the US dollar for once — because the same cheaper barrel that hurts Canada's terms of trade also drains the oil-inflation impulse that had driven Fed hike bets from 10.7% on 15 July to 34.7% by 22 July. A cheaper barrel weakens CAD directly and weakens USD indirectly. Score those channels separately and a flat exchange rate stops looking like a broken correlation and starts looking like arithmetic.

What actually happened: a pause in strikes, a $10 slide in crude, a blockade still in force

Over the weekend of 25–26 July 2026, after two weeks of nightly US attacks on Iran and Iranian retaliation against US allies in the Gulf, both sides simply stopped. By Sunday it was a second consecutive day without strikes. Oman sent a delegation to Tehran, while Qatar and Pakistan relayed messages between the two capitals. Iranian Ministry of Foreign Affairs spokesperson Esmaeil Baghaei said mediators were "exchanging messages between Iran and the US," while cautioning that Iran's past diplomacy had been "betrayed." Iranian army spokesman Mohammad Akraminia put the military position plainly: "Our strategy has essentially been retaliatory. We have also halted our retaliatory operations." From Washington, US Ambassador to the United Nations Mike Waltz said President Trump was "giving [the potential for] talks … a little bit of room," with negotiators engaged at every level. (Neutral coverage: Al Jazeera.)

The oil market repriced immediately. Brent opened the week sharply lower and kept sliding: around $92.3 a barrel in European hours, down 4.7%, and near $90.5 later in the session for a fall of roughly 6.5%, with WTI down a comparable amount to about $83.8. That puts the international benchmark roughly $10 below the $100.69 close of 23 July and around $12 off the $102 intraday high printed last week — the entire war premium built through the second half of July, drained in a matter of hours. (Neutral coverage: Euronews; benchmark levels via market data.)

Now hold those two paragraphs side by side, because the gap between them is the single most important thing in this update. Nothing about the physical supply of oil improved. The US naval blockade of Iranian ports around the Strait of Hormuz remains in full effect — as of Saturday the US had redirected twelve vessels, disabled two and boarded two, while Iranian forces had stopped six vessels with warning shots and one oil tanker struck a mine in the strait. Transits through the chokepoint were running at roughly 15 a day as of 19 July, against a pre-crisis baseline near 88. Not one additional cargo has moved because the shooting stopped. The market did not buy restored supply on Monday; it bought a higher probability of restored supply later.

What it did to the currencies

The currency reaction on Monday is a small masterclass in why the same catalyst has to be scored through more than one channel. USD/CAD was at 1.4097, up 0.03% — flat, on a day the loonie's headline commodity lost 6.5% (currency levels via market data). Meanwhile the euro firmed to about 1.1409 against the dollar and gold held above $4,000, both consistent with a softer greenback rather than a stronger one.

That combination only makes sense through the factors. Cheaper crude is a direct negative for CAD's terms of trade — the commodity channel. But it is simultaneously a negative for the US dollar through the rate channel, because the oil spike was the specific input that drove Fed hike expectations from 10.7% on 15 July to 34.7% on 22 July and towards 38% by the end of the week; take $10 out of the barrel and you take a meaningful chunk of that inflation impulse with it. Euronews reported traders pricing roughly a 36% chance of a Fed hike at the upcoming meetings as crude slid. Layer on the risk channel — a de-escalation is risk-on, which favours the pro-cyclical commodity dollars — and CAD ends up with one factor against it and two broadly for it, against a counter-currency that is itself losing support. Net: a flat exchange rate that a price-only model has no way to anticipate.

The yen tells the complementary story. USD/JPY was near 163.5, barely changed, because the two forces acting on it cancelled as well: a fading haven bid should weaken the yen, but cheaper oil is a genuine positive for a large energy importer's trade balance. The franc's classic crisis premium eases on the same logic. Havens give back what they absorbed — but only to the extent the crisis is actually resolved, and a pause with the blockade intact is not a resolution.

How the $100 break happened: the Red Sea fight turns two-way

Two days decided the shape of the previous leg. On Thursday 23 July 2026, Brent settled above $100 for the first time since late May. On Friday 24 July it gave most of that back, falling about 4% to settle near $97 a barrel — its biggest one-day drop since late June — as traders digested reports on the direction of stalled US–Iran talks and momentum indicators signalled an overdue pause after a near-vertical run. Gold firmed on the same session as attention turned toward the Federal Reserve. (Neutral coverage: CNBC.)

What makes the reversal instructive is what happened while it was underway. Late on that same Friday, the Saudi-led coalition struck Yemen's Houthi-held city of Hodeidah, hitting telecommunications authority facilities and Kamaran Island; one woman was reported injured, and the coalition denied targeting Hodeidah's port. That is a categorical change in the conflict: for the first eight days of this leg the Red Sea story was a militia attacking shipping, and it is now a two-way exchange between a militia and a state. Both sides said as much. The Houthi Foreign Ministry warned that by targeting Hodeidah "the Saudi regime has made 'escalation for escalation' the defining feature" of the coming phase, while coalition spokesperson Major-General Turki al-Maliki said it would continue to take "all necessary operational actions and measures" and would respond "without hesitation" to further hostile acts. The sequence traces back to a 13 July Saudi strike on Sanaa's airport, which broke a four-year informal truce that had held since 2022. (Neutral coverage: Al Jazeera.)

The timing is the analytical point, and it is easy to miss: the Hodeidah strikes landed largely after Friday's settle. So the market did not price the escalation and shrug — it never priced it at all that session. What it did price was the fading of a different fear, the one about US–Iran talks. Anyone reading only the price line would conclude the market has decided the Red Sea no longer matters. Anyone reading the drivers separately would conclude something narrower and more useful: one premium drained while another had not yet been assessed.

That was the third time in this storyline that crude moved opposite to the direction of the headlines — it also fell on 9 July as US strikes widened, and slipped through 10 July, before 27 July made it four. The common thread every time is the gap between the headline and the confirmed loss of physical barrels. The oil risk premium is a forecast of expected barrels lost, and it responds to changes in that forecast, not to the volume or the drama of news flow. Note the underlying vulnerability has not gone away: the US Energy Information Administration estimates that the Red Sea routes now under threat carried about 12% of total seaborne-traded oil in the first half of 2023.

How the $100 break came about

The escalation crossed its first new threshold on 23 July 2026. Brent crude settled up about 7% at $100.69 a barrel — its first close above the $100 mark since late May — and US WTI rose about 6% to $92.19, on a fifth straight session of gains. The trigger was not another round of strikes inside the Strait of Hormuz, but evidence that the disruption is spreading to the routes traders had assumed were safe. Iran-aligned Houthi militants, who had declared a naval blockade of Saudi Arabian shipments on 20 July, said they had attacked two Saudi Arabian tankers — the Encelia and the Layla — in the Red Sea on Wednesday 22 July, the corridor Riyadh relies on to move crude around a blockaded Hormuz. The UK Maritime Trade Operations agency reported that one vessel had been struck by an unknown projectile causing a fire the crew were fighting, and the Saudi Press Agency said all crew members were safe. Houthi military spokesperson Yahya Saree said the group had used "a number of ballistic and cruise missiles, as well as drones" and had forced "nearly ten ships… to abandon their routes, and turn back" — a claim about deterrence effects rather than confirmed cargo losses, which is precisely the distinction the oil market has to price. Separately, an attack struck the Caspian Pipeline Consortium terminal on Russia's Black Sea coast, the outlet for the bulk of Kazakhstan's crude exports. (Neutral coverage: Al Jazeera.) On top of that, President Trump said he was weighing a "massive attack" on Iran that would be "bigger than ever before" and that he was "close to making a decision." (Neutral coverage: CNBC and Rigzone.)

The move was visible in the parts of the oil market that show real physical tightness, not just sentiment. Dated Brent — the price of physical North Sea cargoes — traded above $105, the front-to-second-month Brent backwardation widened past $6 a barrel (a curve shape that says buyers are paying up for prompt barrels), and diesel futures hit their highest since early April. Those are the fingerprints of a market pricing an actual near-term scramble for supply, which is why the $100 break carried more weight than the on-off spikes of earlier in the month.

Here is where the currency read gets interesting — and where a fundamental score earns its keep. On the commodity channel alone, $100 oil is unambiguously bullish for the Canadian dollar. Yet through the break USD/CAD was stalling near 1.41, and the loonie had actually given back ground from the 1.40 one-month high it printed on 17 July, even though crude was roughly $12 a barrel higher at the peak. Two of the model's other factors explain the stall. First, the rate factor: Canada's June Industrial Product Price Index fell 1.4% month-on-month — against about −0.4% expected and ending a five-month run of increases — the sharpest drop since 2023, which cooled the pipeline of Canadian inflation and trimmed Bank of Canada rate-hike expectations, capping the yield support under CAD. Second, the same oil spike lifts US yields (energy is an upside-inflation impulse for the Fed too), firming the dollar on the rate side and giving it a haven bid on the risk side. The upshot: a genuine petro-currency tailwind, largely neutralised by a softer domestic rate story and a firmer counter-currency. A price chart shows a flat-ish USD/CAD and calls the oil-loonie link "broken"; a factor read shows three channels in tension and tells you exactly why.

Before the $100 break: the US reimposes its Hormuz blockade, oil hits a one-month high

The mid-July leg is where the storyline turned from an on-off exchange of strikes into a sustained supply squeeze. It began over the weekend of 12–13 July 2026, when the conflict reached the Strait of Hormuz itself: Iran's Islamic Revolutionary Guard Corps declared the strait closed after firing on the Cyprus-flagged container ship GFS Galaxy, and US Central Command struck Iranian missile batteries, air-defence systems and IRGC fast-attack boats at multiple points around the waterway. Then, on 14 July, the US escalated a step further — reimposing a full naval blockade of Iranian ports around the strait after a seven-hour operation against dozens of coastal military targets, with President Trump floating, then dropping, a proposed 20% transit toll on vessels crossing Hormuz under US protection. (Neutral coverage: Al Jazeera and Al Jazeera on the 12–13 July strikes.)

This time the supply threat was real and it held, so oil moved with the headlines and kept going. Brent reached $85.92 a barrel on 14 July — its highest since 15 June — and WTI pushed above $79, on track for a weekly gain north of 11%, per market data. The driver is the blockade plus the closure: Hormuz — the channel that carries on the order of a fifth of the world's seaborne oil — is now both shut and blockaded, with vessel transits collapsing to roughly seven a day (a two-month low) from about 130 a day before the war. When the market can price a genuine, sustained chance of lost barrels, the risk premium goes back in and stays in.

Then, over 15–17 July, the fight went Gulf-wide and crude went with it. Iran said it had struck US targets in six Gulf states — Bahrain, Jordan, Kuwait, Oman, Qatar and Syria — in retaliation for Washington's latest round of strikes, with Kuwait reporting a hit on a power and water-desalination plant, while Iran kept firing on tankers to force civilian ships to transit through its own waters. US Central Command said it had completed a sixth consecutive night of strikes against Iran, hitting dozens of military-logistics and maritime targets, and commercial traffic through Hormuz stayed largely limited. The market read the widening arc of the conflict as a larger, more durable threat to physical barrels: Brent jumped 4.6% to close at $88.10 on 17 July and WTI settled 4.5% higher at $82.49, extending the week's gain past 14%. (Neutral coverage: CNBC and NBC News.)

The currency read came straight out of the model. The Canadian dollar is outperforming its peers: USD/CAD fell to 1.4006 on 17 July — the loonie's strongest since 17 June — and CAD gained about 1% on the week, its largest advance since April, as the oil rally did the work (currency data via market data). As a net energy exporter, Canada's terms of trade improve when crude climbs, so the commodity channel that was a CAD headwind during the early-July slide is now a clear tailwind — and the Bank of Canada, which held its policy rate at 2.25% on 15 July, explicitly flagged that persistently high oil could yet force a hike, layering the rate factor on top. The dollar, meanwhile, is soft — near its lowest since mid-June as Fed rate-hike expectations fade — so its usual safe-haven bid is capped rather than dominant. That is the crossroads CAD always occupies: an oil-driven commodity lift working alongside, or against, a risk-off drag, factors of the model pulling from a single catalyst.

The early-July round-trip: escalation, then a "wrong-way" oil move

The June framework never made it to the end of its 60-day window. On 7–8 July the US revoked the license that had allowed Iran to sell oil internationally and struck more than 80 Iranian targets, and at the NATO summit in Turkey President Trump declared the ceasefire over: "as far as I'm concerned, it's over." The oil market repriced the risk premium almost instantly — Brent settled up 5.2% at $78.02 and briefly topped $80, WTI rose 4.4% to $73.52, Brent's biggest daily gain since May.

Then the conflict escalated again. On 9 July the US struck for a second straight night, hitting southern port cities — Bandar Abbas, Chabahar, Jask, Abu Musa, Konarak — plus the Bushehr region near Iran's nuclear plant and rail infrastructure on the Tehran–Mashhad route. Trump vowed to "take over Kharg Island," the terminal that handles roughly 90% of Iran's crude exports, and to reimpose a naval blockade. At least 14 people were killed and 78 wounded across five provinces over the two days, and Iran's Islamic Revolutionary Guard Corps retaliated against US facilities in Kuwait, Bahrain and Qatar. (Neutral coverage: Al Jazeera and CNBC.)

And here is the part a price chart cannot explain on its own: oil fell as the strikes widened. On 9 July Brent dropped 1.3% to $76.99 and WTI 1.2% to $72.64, and Brent was near $76.80 on 10 July — paring most of the 8 July spike. The move was fundamental, not sentimental: US crude inventories rose last week for the first time since mid-April as exports slowed (per the EIA), and the Strait of Hormuz kept flowing, so traders judged the actual barrels at risk to be smaller than the initial headline implied. A widening conflict with no confirmed supply loss is a smaller risk premium, not a larger one. (Neutral coverage: Reuters via Yahoo Finance.)

Why oil fell in June: a risk premium, removed

The section below documents the June de-escalation the July collapse has now reversed — it remains the cleanest illustration of the mechanics, so we've kept it as the baseline case. Oil prices carry two components: a fundamental level set by supply and demand, and a risk premium layered on top when traders fear a supply disruption. Through the escalation phase, that premium was elevated because the Strait of Hormuz — the waterway through which roughly a fifth of the world's oil moves — was under threat.

The 15 June framework reversed that. The preliminary memorandum of understanding set out a 60-day ceasefire, reopened Hormuz to commercial shipping, and opened discussions on sanctions relief and the possible release of up to $25 billion in frozen Iranian assets (compliance-dependent). A parallel Israel–Hezbollah ceasefire reduced the regional temperature further. US Central Command lifted restrictions on traffic to and from Iranian ports, advising vessels to route closer to Oman's coast. With the worst-case scenario off the table, the premium had no reason to persist — and Brent's ~8% weekly slide is essentially the market pricing that out. (For neutral coverage, see Reuters Energy and Al Jazeera.)

The crucial point for currency traders: this was not a demand story. Nothing changed about how much oil the world needs. The price fell because fear fell. That distinction matters, because a fear-driven move can reverse far faster than a structural one.

From oil to the loonie: the petro-currency channel

The Canadian dollar is the textbook petro-currency among the majors. Energy accounts for roughly 10% of Canadian GDP and is one of the country's largest exports. Canada prices against WTI (with Western Canadian Select trading at a discount to the benchmark), so the loonie's fortunes are tied to crude through the terms of trade: when oil is dear, Canada earns more per barrel of exports, the trade balance improves, and CAD tends to strengthen — and the reverse when oil falls.

The Bank of Canada's own analytical work helps size the effect. A sustained move of roughly $10 per barrel has historically been associated with somewhere around 1.5–2% in the Canadian dollar on a trade-weighted basis. That is not a mechanical, tick-for-tick rule — the relationship loosens and tightens with the rate cycle and with what's driving oil — but it explains why a ~$5 weekly drop in Brent registers as a genuine fundamental headwind for CAD rather than noise.

The Strait of Hormuz: why one chokepoint moves the whole complex

Geography does a lot of work here. The Strait of Hormuz is the single most important oil chokepoint on the planet, carrying on the order of 20 million barrels per day — roughly a fifth of global supply — through a narrow channel between Iran and Oman. There is no easy substitute route for most of that flow. When transit is threatened, the market has to price the possibility that a meaningful share of world supply could be interrupted overnight; when transit is restored, that tail risk collapses.

This is exactly why a regional event can swing a global price and, through it, currencies on three different continents. The reopening was the proximate cause of the entire de-escalation trade. It is worth noting one technical wrinkle: Tehran indicated that Hormuz transit, currently free, could later require mandatory insurance — a reminder that "reopened" is not the same as "back to pre-crisis normal." Background on the chokepoint and global flows is available from the US Energy Information Administration and the International Energy Agency.

Commodity dollars and the risk-on tailwind

Here the analysis splits in two, and this is where a single-currency lens gets you into trouble. The commodity bloc — the Australian, Canadian and New Zealand dollars — shares a risk-on character: these are pro-cyclical currencies that tend to rally when global stress fades and capital rotates back toward growth-sensitive assets. A clean de-escalation is, broadly, a tailwind for all three.

But CAD carries a second, opposing force. As an oil exporter, it has a direct commodity link that pulls it the other way when crude falls. So the loonie sits at the intersection of two competing channels from the very same headline: the risk channel lifts it, the oil channel weighs on it. The Australian and New Zealand dollars, which are tied more to industrial and soft commodities and to China demand than to crude, get the risk-on benefit without the oil drag. The practical upshot is that CAD frequently underperforms AUD and NZD on a de-escalation that also tanks oil — a relationship you can only see if you're scoring the drivers separately rather than watching one price line. (We unpack this currency family in commodity currencies explained; Norway's krone, NOK, is the other notable energy currency and behaves much like CAD here.) Compare the live reads on the AUD page and the CAD page.

The safe-haven unwind

The flip side of risk-on is the safe-haven give-back. During the escalation, the Swiss franc, Japanese yen and US dollar absorbed defensive flows — money parked in liquid, low-risk currencies while the Hormuz threat hung over markets. Each plays the role slightly differently: the franc is the classic crisis hedge, the yen is sensitive to risk sentiment and rate differentials, and the dollar is the world's reserve and funding currency, often bid in any global scare.

As the threat receded, the logic ran in reverse: the premium that flowed into havens during the crisis tends to flow back out as conditions normalise, all else equal. The phrase "all else equal" is doing real work — the dollar in particular is also driven by US rate expectations and growth, which can swamp the haven effect, and the yen has its own policy dynamics. But the directional pull from this specific event is a softer haven bid. This is the mirror image of the commodity-dollar tailwind: one geopolitical shift, simultaneously lifting the risk-sensitive currencies and deflating the defensive ones. For the mechanics of why these three behave the way they do, see safe-haven currencies.

One headline, many currencies: the transmission map

The table below is the whole argument in one view — a single catalyst, the channel it travels through, and the directional pull on each currency in the regime as it now stands (strikes paused but the Hormuz blockade still in force, Brent back near $90 from $100.69, risk sentiment improving, and the US oil-inflation impulse deflating into the Fed). Note that CAD appears with a net read precisely because its channels point in opposite directions — and that the de-escalation flips the sign on almost every row relative to last week.

This is the core of the PIPTHEORY thesis. A price-only tool tells you that a currency moved; it cannot tell you that the same news was pushing CAD and AUD in partly different directions, or that the dollar's reaction is a tug-of-war between haven flows and rate expectations. A fundamental meter that scores a commodity factor and a separate risk/safe-haven factor — two of the five factors in the model — is built to decompose exactly this kind of event. It reads the drivers, so when one catalyst lights up several currencies at once, you can see which channel is doing the work in each.

The fragility that became the outcome

We flagged this as the base-case risk in June, and it is worth stating plainly why: none of the de-escalation was ever settled. The framework was a 60-day ceasefire, not a treaty. The technical phase of the US–Iran talks in Switzerland was postponed on 18 June, and the core nuclear questions — uranium enrichment levels and the highly-enriched-uranium stockpile — were never resolved. The asset-release and sanctions-relief discussions were compliance-dependent. Because the ~8% June oil drop was driven by the removal of a risk premium rather than by any change in physical supply or demand, the move was inherently reversible.

On 8 July it reversed: the license was pulled, the strikes landed, and the premium was repriced into crude within a session — Brent back above $78, briefly over $80. But the 9 July action shows the other half of the same lesson. A second day of strikes and threats to Iran's main oil terminal would, on a headline read, argue for still-higher crude — yet oil slipped to $76.99 because the supply balance (building inventories, an open strait) had not actually deteriorated. The premium tracks expected barrels lost, not the volume of news. So the currency reaction is more muted than the escalation suggests: a softer oil tailwind for CAD, a modest wobble for AUD and NZD, and a real-but-capped haven bid for CHF, JPY and USD. The point is not that any of this was predictable to the day — it wasn't — but that a fundamental read framed the conditions, so both the spike and its partial fade looked like mapped scenarios rather than shocks.

The takeaway

The full arc — June's de-escalation, July's collapse, a $100 break that lasted a single session, and now a slide back to $90 on a pause in the shooting — is a near-perfect case study in how geopolitics moves currencies: not directly, but through oil and through the global risk regime, two channels that a fundamental score tracks separately and a price chart blends into a single, hard-to-read line. CAD sat at the crossroads of both in every direction, which is why the loonie's reaction was never as simple as "oil up, buy the loonie."

If you take one thing from the whole sequence, take this. Four times now — 9 July, 10 July, 24 July and 27 July — crude has moved against the apparent direction of the news, and every time the explanation was the same mechanism: the premium is a forecast of barrels at risk, so it responds to revisions in that forecast rather than to escalation or de-escalation as such. Three of those days it fell while the fighting widened, because nothing was confirmed lost. The fourth it fell while the blockade held and transits stayed at a fraction of normal, because the odds of an eventual reopening improved. A price-only read calls those days noise. A driver-based read calls them the system working as specified.

And that is exactly why the loonie has been the most instructive currency in the whole episode. It refused to rally through a $12 oil surge, and it refused to break on a $10 give-back — USD/CAD is essentially where it was through both. That is not a dead correlation. It is three factors sharing one exchange rate: a commodity channel that flips sign with crude, a risk channel that flips the other way, and a rate channel whose most important input right now sits on the American side of the pair. Score them separately and the flat line stops being a puzzle. Watch only the price and you will keep waiting for a move that the fundamentals already explain away.

To learn how PIPTHEORY builds its fundamental currency-strength scores, see the methodology overview.

Educational macro context only — not investment advice.