Daily Macro Brief
Tariffs take effect as activity cools and the 30-year stays at 5.23%
U.S.-Canada tariffs have moved from negotiation risk to a real cost as U.S. activity cools, while high long yields and low Hormuz traffic keep supply pressure in view.
This report is based on intraday data as of 11:51 AM ET and does not reflect closing prices. Markets may have moved since publication.
Review of the prior call
Friday’s brief argued that supply chains were adapting, but high discount rates and supply friction had not gone away. Since then, Section 338 has taken effect, visible Hormuz traffic fell to four vessels on Sunday, and the 30-year Treasury yield eased only slightly from 5.27% to 5.23%. The workarounds still function, but the constraints have become more concrete.
Core view
U.S.-Canada tariffs have moved from a negotiating risk to a customs cost just as U.S. activity indicators are cooling. Long yields did not respond with the kind of decline associated with a growth scare, while Iran kept expanding its tools for controlling Hormuz traffic. The mix is slower growth alongside persistent supply pressure, with no straight path toward rapid easing.
What matters today
U.S.-Canada talks break down as Section 338 enters enforcement
U.S.-Canada trade talks stopped on Friday night, and the Section 338 surcharge took effect at the scheduled time. Canadian Prime Minister Mark Carney announced a dollar-for-dollar response, but his government has not published the detailed tariff schedule.
Political language has now turned into a cost at customs. CBP confirmed overlap exclusions for some goods already covered by other sector measures, but CUSMA origin alone does not qualify for an exemption. North American manufacturers face two open questions: how the current surcharge will move through their supply chains, and which industries Canada will name in its response. Canada’s measure becomes concrete when the government publishes the formal schedule.
U.S. activity softens, but the Fed is not declaring victory over inflation
The Chicago Fed’s national activity gauge weakened in July, with consumption and housing the main drag. Its August business survey still described growth as near trend, though manufacturing momentum slowed and expectations for hiring and capital spending remained negative.
Demand is losing some speed, but not enough to force an immediate policy turn. Minneapolis Fed President Neel Kashkari also warned that the energy conflict and tariffs could prolong inflation, and said the Fed needs more data. Rates are caught in an awkward mix: growth is cooling gradually, while supply-side price risks keep easier policy expectations from moving forward cleanly.
Hormuz controls tighten as another vessel incident hits the Red Sea
Kpler’s visible count of Hormuz transits dropped sharply over the weekend. Iran published a list of non-compliant vessels and threatened fines, detention, or confiscation for violations and assisted transfers. Its parliament is also advancing legislation for transit service fees. Separately, an unknown projectile struck a tanker west of Yanbu, Saudi Arabia. The crew was safe, and no spill was reported.
Dark voyages, nighttime corridors, and alternate routes are keeping cargo moving, but enforcement, insurance, and identification risks are accumulating. The Yanbu incident has not been attributed to the Houthis, and the transit fee is not yet in force. Those distinctions matter. Even so, Iran is broadening its control system beyond military threats to vessel lists, fees, and liability for transfers, making shipping friction harder to unwind quickly.
Mexico rebounds, but inflation turns higher again
Mexico’s final second-quarter growth reading was revised slightly below the preliminary estimate, although agriculture, industry, and services all expanded. Headline inflation accelerated again in the first half of August, with services still sticky, while the overall rate remained inside the central bank’s target range.
The data reduce near-term recession concerns and leave Banxico less room to ease quickly. If the U.S.-Canada dispute keeps disrupting regional supply chains, Mexico could capture some redirected orders, but it would also face volatility in parts, currencies, and regional demand. The next test is whether core services inflation cools and industrial growth persists. One quarter’s rebound is not enough.
GPT-5.6 Sol gets cheaper as competition over inference costs deepens
OpenAI introduced a temporary price reduction for the GPT-5.6 Sol API and some eligible credits. Consumer and business subscription prices were unchanged. AWS confirmed the adjustment, while other sources differ slightly on the first announcement date.
Cheaper inference can expand the set of viable applications and force cloud and model providers to recalculate unit economics. It helps application experiments, but it does not prove that compute demand will accelerate because higher usage and lower revenue per unit can arrive together. The useful test will come from API volume, cloud growth, and infrastructure guidance. A price sheet cannot provide it.
There is a credible path against today’s view. Business activity remains near trend, demand at short-term Treasury auctions was firm, and alternate energy routes are still working. A quick executable U.S.-Canada agreement, sustained recovery in visible Hormuz traffic, and a decisive retreat in long yields would push supply constraints back into the background. A wider Canadian tariff list, persistently weak traffic through the traditional route, or another energy price surge would deepen the cost shock instead.
Bond market
The 30-year Treasury yield remains above 5%, and the 2-year JGB yield has an RSI of 91.08, so today’s thresholds warrant a table:
| Market | Maturity | 11:51 AM ET | 1D change |
|---|---|---|---|
| U.S. Treasury | 2-year | 4.19% | about 0bp |
| U.S. Treasury | 10-year | 4.70% | about 0bp |
| U.S. Treasury | 30-year | 5.23% | about 0bp |
| Japan government bond | 2-year | 1.682% | about 0bp |
| Japan government bond | 10-year | 2.882% | about +2.8bp |
| Japan government bond | 30-year | 4.042% | about +4.7bp |
The long end of the Treasury curve was roughly flat despite softer activity and the start of the tariff. Bonds are not pricing a recession. The inflation tail and fiscal premium are still offsetting weaker growth. Bid-to-cover ratios at the 13-week and 26-week bill auctions were 3.08 and 3.05, so short-term funding demand was orderly, but the auctions did not pull the 30-year yield below 5%.
Japan’s curve shows the global fiscal pressure more directly. The 2-year yield is technically stretched, while the 10-year and 30-year yields rose together. The high U.S. long end and Japan’s tight front end with a rising long end come from different policy stages, but both raise the global cost of capital. If U.S. activity keeps weakening and long yields still refuse to fall, term premium will matter more than policy-rate expectations as an explanation.
Sector and price response
The broad market was cautious without becoming fully Risk-Off. VOO fell 0.2% intraday, QQQ lost 0.7%, VIX rose 4.2%, and the dollar index gained 0.2%. TLT rose 0.7%, even as the underlying yields barely moved. Investors were reallocating risk across technology, energy, and high-beta assets rather than acting on one macro conclusion.
AI semiconductors and infrastructure
Semiconductors were the clearest weak spot. SMH fell 2.4% intraday, extending its five-day decline to 7.9%. MU dropped 5.75% and VRT lost 2.93%, while NVDA, TSM, and AVGO also declined. GOOG, MSFT, META, and AMZN rose, leaving platforms stronger than the hardware chain. No new issuer guidance explains the divergence, so the move looks more like a pre-earnings reset in valuation and expectations than a confirmed turn in demand. Strong data-center growth, product supply, and customer capital-spending signals from NVDA on Aug. 26 could contain the damage to valuation. Weaker guidance would turn the current split into a cycle warning.
Energy and shipping
Crude oil futures fell 2.7% intraday and remained down 5.1% over one month. XOM, CVX, and OXY declined 1.58%, 1.55%, and 2.59%. That is a notable divergence from lower visible Hormuz traffic, tighter PGSA controls, and the vessel incident near Yanbu. The market is not yet pricing an imminent systemwide supply loss. Alternate flows, demand concerns, and the removal of some weekend risk premium may all be involved, though the public data cannot separate their contributions. If API and EIA inventories remain comfortable, weak prices would support the view that physical flows are adapting. If inventories tighten while the traditional route remains impaired, today’s oil decline will look too relaxed about supply risk.
Digital assets
BTC rose another 2.0% intraday, taking its five-day gain to 22.9% and its RSI to 88.09. MSTR gained 4.57%, but COIN fell 1.60%, so the related assets have already begun to diverge. U.S. spot BTC and ETH ETFs recorded net inflows of $307.5 million and $184.0 million for Aug. 21, providing a verifiable flow backdrop to the weekend rally. Continued inflows would support the case for institutional demand, but the extreme RSI and split among proxies make chasing momentum risky. If inflows cool and prices remain stable, the rally’s quality improves. If flows and momentum reverse together, this was still mainly a liquidity pulse.
Agriculture
Agricultural inputs gave back a little ground after a sustained advance. CF, NTR, and MOS fell 0.25%, 0.77%, and 1.21% intraday, but their five-day gains remained 9.76%, 9.37%, and 13.59%. NTR’s RSI reached 77.5. There was no corresponding issuer-level catalyst, so prices appear to be digesting the inflation and supply-chain theme that drove the earlier move. Canada has not released its formal response list, and agricultural equipment has been named as a possible category, leaving the group sensitive to policy details. The recent strength needs confirmation from the final list, input prices, or operating data before it has a firmer fundamental explanation.
What to watch next
API on Aug. 25 at about 4:30 PM ET and EIA on Aug. 26 at 10:30 AM ET: watch commercial crude, Cushing, and distillate inventories for a coordinated tightening. Comfortable inventories during low Hormuz traffic would show that alternate transport is cushioning the disruption. Broad declines would force a reassessment of oil’s muted response to shipping risk.
NVDA earnings after the U.S. close on Aug. 26: watch data-center growth, next-generation product supply, and capital-spending signals from major customers. Strong guidance would challenge the demand concern implied by recent semiconductor weakness. A downgrade would turn the platform versus hardware split into an AI-cycle signal.
Jackson Hole from Aug. 27 through Aug. 29, with the keynote on Aug. 28: watch how the Fed weighs softer activity against energy pressure and tariff pass-through. Continued emphasis on inflation risk could keep long yields high. A clear turn toward growth risk would give bonds a reason to price faster easing.
Canada’s planned response on Sept. 8: first look for the formal tariff schedule, covered categories, and enforcement details. A narrow list and resumed talks would contain the North American cost shock. A wider list followed by new U.S. measures would turn one tariff event into a longer regional supply-chain conflict.
Risk notice
This article is public market commentary and personal research notes. It does not constitute investment advice.
