The dollar has almost every reason to rally. September inflation ran hot at 3.7%, markets price roughly 76% odds of a December rate hike, and oil sits above $110. Yet the DXY, an index that tracks the dollar against six major currencies, hovered near 101.7 last week and could not hold a breakout.
That refusal to move in one direction is the most useful signal in the US dollar outlook right now.
The Federal Reserve announces its decision today, 28 October 2026, and the midterm elections follow on 3 November. AI sentiment and the Iran conflict are layered on top. OCBC strategists Sim Moh Siong and Christopher Wong call the dollar supported, but say trading in it has become “less one-way.”
You will leave with a way to judge which drivers can lift the dollar, which can turn against it, and what each midterm outcome could mean for your positioning.
Why is a hot CPI and a hawkish Fed not producing a runaway dollar rally?
On paper, the setup looks like a dollar bull’s dream. The Bureau of Labor Statistics reported on 14 October that the Consumer Price Index (CPI), the main gauge of US inflation, rose 0.6% in September and 3.7% year on year, above forecasts. Core CPI, which strips out food and energy, rose 0.3% for the month and 2.6% for the year.
The Fed’s target range sits at 3.75%-4.00%. CME FedWatch, a tool that converts futures prices into rate probabilities, showed about 90% odds of a hold today, with December hike odds near 76.2% across 26-28 October.
So why the stall?
On 21 October, the DXY was little changed at about 101.7 after touching 101.50 the day before. A market loaded with supportive news that still drifts sideways is telling you the news is already in the price, not that the dollar is weak.
| Indicator | Latest reading | Why it matters for USD |
|---|---|---|
| Headline CPI (Sept) | +3.7% YoY | Raises expected Fed rates |
| Core CPI (Sept) | +2.6% YoY | Milder underlying pressure limits hawkish upside |
| Fed funds range | 3.75%-4.00% | Formally restrictive policy supports yields |
| December hike odds | About 75%-78% | Most of the hike is already priced |
| DXY (21 Oct) | About 101.7 | Failure to break out signals a two-way market |
BNY’s John Velis argued on 13 October that the dollar’s direction depends on more than the Fed. It also hinges on whether Treasury yields can hold their recent highs, and the dollar softened that day as oil and yields eased.
The bond-to-currency pipeline explains why Treasury yields matter so much here: higher yields tend to pull global capital into dollar assets, but past a certain point they start signalling credit risk instead of strength.
OCBC’s read: The dollar remains supported by hawkish Fed risks, the midterms, AI policy and the Iran conflict, but the trade is becoming “less one-way.”
For today, the implication is direct. A hawkish hold adds little fuel when a December hike is already roughly 76% priced; only a surprise against those odds is likely to move the dollar meaningfully.
When big ASX news breaks, our subscribers know first
How do energy, safe-haven demand and AI flows move the dollar, and when do they reverse?
The basic logic is intuitive. The dollar tends to gain when US yields rise, when inflation pushes up expected Fed rates, when frightened investors seek safety, and when foreign capital flows into US assets.
The complication is that each of these supports comes with a delayed counterweight. Nomura’s Dominic Bunning describes the energy-rate relationship as nonlinear: higher energy prices lift the dollar first, but if rates climb far enough to damage the AI trade and risk appetite, the dollar becomes exposed.
| Driver | First-round effect | Second-round risk | Net USD tilt |
|---|---|---|---|
| Oil | Lifts inflation expectations and yields | Growth scare lowers yields | Supportive, conditional |
| Iran escalation | Safe-haven and energy premium | De-escalation removes both | Supportive while tensions last |
| AI investment | Foreign inflows, growth, yields | Disorderly selloff reverses flows | Net tailwind (OCBC) |
| Hot inflation | Higher expected Fed rates | Policy error weakens growth | Supportive near term |
Two kinds of AI slump
In a conventional global risk-off episode, investors run toward dollars and Treasuries. Iran-related stress has shown this pattern, with Treasury demand rising as equities sold off.
A selloff centred on US tech behaves differently. Reuters reported the dollar fell during one AI-related risk episode as investors shifted toward a more dovish Fed outlook. OCBC still sees AI capital spending as a net dollar tailwind and calls it premature to bet on an AI slump weakening the currency, though it flags the boost could fade in 2027.
Oil and Iran: conditional supports
Brent reached $110.11 and WTI $99.00 on 21 October after Iran signalled little diplomatic progress. Escalation supports the dollar through safety demand and energy prices; de-escalation strips out both premiums and lets higher-risk currencies recover.
Oil’s first-round lift to the dollar also runs through the euro, which makes up well over half of the index, so euro-driven DXY moves often decide whether an energy-led rally extends or stalls.
Societe Generale’s Kit Juckes argues a sustained short-dollar position is hard to hold while the energy crisis reinforces the dollar’s “petrocurrency” and safe-haven traits.
The takeaway for you: the dollar’s role as a refuge is less reliable when stress starts inside US assets. OCBC notes the yen is increasingly attractive as a hedge in that case, so a risk-off day no longer automatically means a long-dollar trade.
What could the November 3 midterms mean for the dollar?
The baseline matters before the scenarios do. Democrats lead the generic ballot 51%-43% in Reuters/Ipsos polling and 50.8%-42.5% in the RealClearPolling average, a gap of roughly 7-9 points depending on source.
Cook Political Report coverage said Republican prospects of holding the House had “all but evaporated,” with Democratic gains of about 12-22 seats projected. The Senate is closer: Cook sees Democratic gains of 2-6 seats, and prediction markets put Democratic control odds near 64%.
Three outcomes, three fiscal paths
Each outcome runs through the same channels: government spending, Treasury issuance (the volume of new government debt sold) and the yields that debt must pay.
| Scenario | Fiscal implication | Yield pressure | USD read |
|---|---|---|---|
| Unified Republican | More fiscal expansion | Higher, via larger issuance | Most USD-positive surprise (OCBC) |
| Divided government | Limits further expansion | Less supply pressure | Broadly neutral (OCBC) |
| Democratic sweep | Shift toward social spending, possible tax rises | Depends on deficit balance | Mixed |
The direction of the move depends less on which party wins than on how far the result lands from expectations. Because a Democratic House is consensus, a divided result is roughly priced; any election-driven dollar position is best sized around the less likely outcomes.
With a Democratic House already near consensus, the Senate result carries most of the new information on election night, which is why the less likely outcomes deserve the most attention when sizing any election-driven position.
What history says, and does not
A Federal Reserve data review offers some patterns:
- The 10-year Treasury yield was lower six months after five of six midterms from 2002 to 2022, by about 17 basis points on average
- The broad dollar index was lower six months after four of five midterms from 2006 to 2022, by about 1.2% on average
- One-, three- and twelve-month changes averaged close to zero
That looks like a tendency, but the variation between cycles was too large to form a dependable rule. Treat it as background, not a trade signal.
Where does the bullish dollar case break, and who disagrees?
OCBC’s base case is a moderate dollar rally into year-end. Not every major house agrees, and the counter-arguments are serious.
A dovish pivot, driven by slower growth or weaker labour demand, could bring cuts instead of a December hike. An overly aggressive response to energy-driven inflation could become a policy error that damages credit and pushes yields lower. Add a possible AI reversal, persistent fiscal worries, overvaluation, slow-moving de-dollarisation and a ceasefire in Iran, and the downside list is long.
| Institution | Stance | Key condition |
|---|---|---|
| OCBC | Moderate rally into year-end | Firm yields, hawkish Fed bias |
| Goldman Sachs | Overvalued; moderate trade-weighted depreciation | Fading demand for US assets |
| MUFG | Roughly 5% depreciation, later softened | 3-4 cuts beyond pricing; labour weakness |
| ING | Consolidation near highs | No further major leg down in AI stocks |
ING’s Chris Turner also found de-dollarisation made little headway in its 2026 assessment, which keeps it a structural risk rather than an immediate catalyst.
These views are less contradictory than they look. A tactically firm dollar and a medium-term weaker dollar can both be right, so the useful question is which time horizon your exposure sits on. These forecasts are speculative and subject to change with market developments; past performance does not guarantee future results.
Signposts worth monitoring:
- December FOMC hike odds relative to roughly 76%
- Whether Treasury yields hold their recent highs
- Iran diplomacy and Brent around $110
- Sharp moves in AI-linked equities
- The midterm margin against polling expectations
What the US dollar outlook asks of you after today’s decision
The dollar is supported, but every support carries a flip side. Oil, Iran, AI and hot inflation can each lift the currency first and weigh on it later, depending on whether they lift yields or damage growth.
The practical task is to track a short list: Treasury yields, December hike odds, the midterm result against expectations, Iran headlines and stress in AI equities. Shifts in those variables will tell you which side of each driver is winning.
The next test arrives with the December FOMC. Further out, OCBC’s warning that the AI boost could fade in 2027 is the medium-term question that tactical bulls will eventually have to answer.
This article is for informational purposes only and should not be considered financial advice. Investors should conduct their own research and consult with financial professionals before making investment decisions.
