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The war split Americas FX into three trades that look identical on a screen and have nothing in common underneath. CAD is a petro-currency with a new prime minister and a pipeline to the Pacific. MXN is a carry trade running on a 325 basis point spread that only works if Hormuz reopens before Banxico has to hike. BRL is a political option on an October election priced like a coupon. If you are running all three as “long EM Americas,” you are running three unrelated bets in one line item.
The Loonie Is the Only Currency That Wins Either Way
Canada is the only major reserve-currency economy that is a net energy exporter at scale. National Bank Financial’s March forex report quantifies the advantage: Canada’s net energy balance is equivalent to 4.4 percent of nominal GDP, the largest among the IMF’s main reserve-currency economies. That buffer is not theoretical. It is printing in real time. Every week Hormuz stays closed, Canadian crude trades at a wider premium to global benchmarks, the current account improves, and the loonie finds a bid that has nothing to do with rate differentials.
The structural story has changed since January. Mark Carney became prime minister. The Trans Mountain Pipeline expansion is operational, and Canada began exporting more seaborne crude to China than to the United States in 2025, per Reuters, a shift that has only accelerated since. The trade war with Washington, which was supposed to destroy CAD, did the opposite. Tariff escalation weakened the dollar and strengthened the loonie, and the Iran conflict has only reinforced Canada’s position as the West’s most accessible energy exporter outside the Gulf.
NBF sees scope for further CAD appreciation through 2026, particularly if Middle East tensions create an opening for more constructive trade talks between Ottawa and Washington aimed at containing inflation ahead of the US midterms. That is the kind of geopolitical arbitrage that does not show up in a rate differential model. If Hormuz reopens and oil corrects, CAD gives back some gains but holds up better than any commodity currency because the dollar itself has structural problems that predate the war. If Hormuz stays closed, Canada becomes the West’s most reliable energy supplier outside of the Gulf. Either scenario is net positive. That is rare in FX right now.
The Peso Carry Trade Is a Bet on a Strait You Cannot See
Banxico’s policy rate sits at 7 percent. The Fed is at 3.75 percent. That is a 325 basis point spread, and it widened through 2025 as Banxico cut more slowly than the Fed. The carry arithmetic is simple: borrow dollars, buy pesos, collect the differential, and hope the spot rate does not move against you faster than the coupon accrues. In 2025 that trade returned 23 percent. The peso set a new record against the dollar in January 2026. FXStreet, Barchart, and half the sell side called it the trade of the year.
The problem is that Mexico is a net oil importer. Pemex’s production has been declining for two decades and the country now depends heavily on US refined product imports to meet domestic fuel demand. When Brent is at $70, the carry trade works because Mexico’s import bill is manageable and the rate differential does the heavy lifting. When Brent is at $112, the energy import cost eats into the current account, raises domestic inflation expectations, and forces Banxico into a corner: either hold rates high enough to defend the carry (which crushes an economy already growing at barely 1.15 percent per the private sector survey) or cut into rising inflation and watch the carry unwind.
Banxico’s economists expect the rate to end 2026 at 6.50 percent, implying two more 25 basis point cuts. Those cuts were priced before Brent was above $100. If oil stays here, those cuts do not happen. And if Banxico signals a pause or a reversal, the carry maths still work on paper but the positioning gets crowded into a trade with no exit. As the YWO forex outlook noted, when a carry trade gets too crowded, the door to the exit gets very small. A sudden spike in volatility can trigger a carry unwind where everyone sells pesos and buys dollars at once. The peso is not a trade on Mexican fundamentals right now. It is a trade on the Strait of Hormuz reopening within the next 60 days. If you are comfortable with that dependency, the coupon is attractive. If you are not, the four central banks that froze this week just told you what happens when oil rewrites the rate path.
The Real Is Not a Currency Trade. It Is an Election Ticket.
Brazil has the highest real interest rates in the Americas at roughly 10 percent. That alone would normally make BRL the carry favourite over MXN. It is not, because Brazil carries political risk that Mexico currently does not. The presidential election is in October 2026. One portfolio manager interviewed by East Capital in Sao Paulo said that if the pro-business candidate Tarcisio de Freitas wins, the market could rally by as much as 100 percent. That is not a currency forecast. That is a regime-change option.
The commodity mix is more balanced than Mexico’s. Brazil is a net food exporter, a major iron ore producer, and while it imports some refined petroleum, it also has significant pre-salt offshore reserves through Petrobras. Rising oil prices are not as directly negative for Brazil’s current account as they are for Mexico’s. But the fiscal picture is worse. The deficit is wide, public debt is climbing, and the central bank’s credibility depends on the next government’s willingness to maintain fiscal discipline. If Tarcisio wins and signals austerity, BRL could be the best performing currency in the hemisphere in the second half of 2026. If Lula’s successor wins and the fiscal trajectory stays loose, the 10 percent yield is a trap.
For now, BRL trades sideways because nobody wants to take the election risk seven months early when oil is delivering daily vol that makes everything else irrelevant. The smart money is watching but not yet positioned. If you want to front-run October from March, you need a view on Hormuz, a view on Brazilian politics, and a view on Fed policy simultaneously. That is three binary bets stacked on top of each other. Most desks are not set up for that, which is exactly why the opportunity exists if you are.
Three Trades, Zero Overlap
The screen says all three are “Americas FX, long against USD.” The reality is that CAD is an energy hedge, MXN is a carry trade with a hidden oil dependency, and BRL is a six-month political option. Running them as a basket neutralises the edge in each. If you want the petro-currency, buy the loonie and accept that you are making a directional oil bet with Canadian characteristics. If you want the carry, buy the peso and accept that you are making a Hormuz bet with a 325 basis point coupon. If you want the election trade, wait for the polls to narrow and buy the real when the rest of the desk is still pricing oil. The worst thing you can do is own all three and call it diversification. It is not. It is three unrelated bets paying you to not notice they are unrelated.
For a complete timeline of how the Iran war reshaped global markets, see our reference page.
