Weekend Edition · Sat 17 Oct 2026
Dollar Index Ends the Week Down 0.36%: A Closer Look at the Week's Reversals
The ICE US Dollar Index closed at 101.84 on Friday 16 October, 0.36% below its 9 October close of 102.21, its first weekly loss after four straight gains. The index reversed direction three times in five sessions, rising on hot inflation data and falling as rate-hike bets faded and AI stocks sold off.
Not investment advice: this article is for information only.
Chanan Zevin - Chief Editor and Head of Desks
Published
A 0.36% weekly decline
The ICE US Dollar Index, known by its ticker DXY, closed at 101.84 on Friday 16 October. It had closed at 102.21 on Friday 9 October, so the close-to-close decline was 0.37 point, or 0.36%. The Journal calculated the figure from daily closing values published by Yahoo Finance, which match the historical price table on the Wall Street Journal's market-data site for both dates. The index measures the dollar against six major currencies, with the euro carrying the largest weight. FXStreet reported that it was the first weekly loss after four consecutive weekly gains.
Which close, which clock
Timestamps matter for a move this small. The daily closes used here are New York session closes, taken at about 5 p.m. New York time, which is midnight in Israel. The Wall Street Journal's last quote, at 4:59 p.m. on Friday, was 101.78, which would make the weekly decline 0.42%. Reuters, writing earlier on Friday, said the index was set for a 0.35% weekly drop at 101.87. A London edition of the same Reuters report put the drop at 0.55% at 101.70, so the answer depends on the minute chosen.
Up, down, up, down, down
The week's defining feature was its reversals. The index rose 0.36% on Monday, fell 0.39% on Tuesday, rose 0.36% on Wednesday, fell 0.54% on Thursday and slipped 0.16% on Friday. Chart 1 shows the daily closes from the prior Friday baseline of 102.21 to Friday's 101.84. That is three changes of direction in five sessions, with only Friday extending the previous day's move. The net result was small, but the daily swings were each larger than a third of a percent until Friday.
Wednesday's near miss at 103
The high point came on Wednesday. After the consumer price report, the index traded as high as 102.95, according to Yahoo Finance data, and the Wall Street Journal lists 102.94 as its 52-week high, set that day. FXStreet described the move as trading just shy of the 103.00 hurdle before it fizzled. Babypips reported that the dollar and Treasury yields jumped within minutes of the 8:30 a.m. release. The index closed Wednesday at 102.55, below the intraday peak.
Inflation lifted the dollar first
The data were strong enough to explain the initial move. The Bureau of Labor Statistics said consumer prices rose 0.6% in September and 3.7% from a year earlier. Producer prices rose 1.3% on Thursday's release, the largest gain since March 2022. Hotter inflation raises the prospect of higher US interest rates, which usually supports the currency. Reuters reported that the inflation boost more than offset the drag from the technology selloff on Wednesday, one of only two up days for the index in its count.
Then rate-hike bets faded
The second half of the week ran the other way. Reuters reported that comments from Fed officials signalling no urgency to tighten further helped stabilise Treasury yields and eroded support for the dollar. The CME FedWatch tool showed an 83% probability of no change at the 27-28 October meeting, up from 49% a month earlier, according to Reuters. John Velis of BNY told Reuters he did not think there was enough support on the committee for an October increase. He said December remained an unanswered question.
Warsh gives nothing away
Fed Chair Kevin Warsh offered no guidance. Speaking at the IMF and World Bank annual meetings in Bangkok on Friday, he said he does not prejudge meetings, Reuters reported. FXStreet wrote that his non-committal remarks added to selling pressure on the dollar during the Asian session. The Fed raised its target range to 3.75%-4.00% on 16 September. Officials now enter the blackout period before the October meeting, which limits further signals.
Tied to the AI trade
The most unusual feature of the week was the dollar's link to technology shares. "What I found most interesting today and more broadly this week, is how closely the dollar has been tied to the AI trade," Matt Weller, global head of market research at StoneX, told Reuters. He said a selloff in technology would usually bring safe-haven buying for the dollar, but that the currency was falling instead. The Nasdaq lost 4.48% over the week. In the Journal's analysis, the dollar traded more like a risk asset than a haven, but one week is too short to call that a new pattern.
Havens beat the dollar
Other safe-haven currencies did better. The dollar fell 0.67% against the Swiss franc over the week, to 0.8246, and the franc gained more than 1.4% in the last two sessions, according to Reuters. Reuters attributed the franc's strength to safe-haven demand and expectations that the Swiss National Bank will not cut below zero. Babypips ranked the Canadian dollar as the best-performing major currency of the week, just ahead of the franc. The table compares the main pairs.
| Pair | Level 16 Oct | Weekly move |
|---|---|---|
| GBP/USD | 1.3314 | Sterling +0.63% |
| USD/CHF | 0.8246 | Dollar -0.67% |
| EUR/USD | 1.1227 | Euro +0.23% |
| USD/JPY | 158.11 | Yen +0.13% |
| DXY (close) | 101.84 | -0.36% |
Sterling and the euro
Sterling rose 0.31% on Friday to $1.3314 and was up 0.63% for the week, Reuters reported. The euro gained 0.56% on Thursday, its biggest daily rise in two months, and was up 0.23% for the week at $1.1227 in late New York trading. Earlier London figures from Reuters had shown a weekly gain of 0.51% for the euro, another reminder that intraday weekly figures move. Because the euro is the largest component of the index, its Thursday rally explains much of the index's biggest daily fall. Fiscal risk in France remained in the background, Reuters said.
The yen's small recovery
The yen ended a four-week losing run. The dollar slipped 0.08% to 158.11 yen on Friday, leaving the Japanese currency up 0.13% for the week, according to Reuters. Reuters said the Iran conflict had supported the dollar against the yen in recent weeks, and that tightening rhetoric from Japanese authorities supported the yen. Bank of Japan Governor Kazuo Ueda reiterated on Friday the risk that underlying inflation overshoots the 2% target. At about 158, the yen remains weak by any recent comparison.
Australia's surprise
One currency fell against all the others. Babypips reported that the Australian dollar finished lower against every major currency after a surprise drop in September employment. FXStreet noted that the Australian dollar recovered toward 0.6950 against the US dollar in Asian trading on Friday after Warsh's remarks. The weekly loss shows that domestic data still mattered more than US policy for some currencies. It also shows why a single dollar index can hide very different stories underneath.
Oil cuts both ways
Energy prices complicate the outlook. Reuters wrote that higher oil prices have recently supported the dollar while weighing on currencies of energy importers such as the euro area and Japan. Brent crude settled at $109.86 a barrel on Friday, up 3.7%, according to the AP. If oil keeps rising, that channel could favour the dollar again. Reuters also reported that investors expect President Donald Trump to avoid escalation in the Middle East or Ukraine before the midterm elections.
Positioning is not crowded
Speculative positioning gives no strong signal. FXStreet, citing Commodity Futures Trading Commission data for the week ending 6 October, said non-commercial net long dollar positions rose to just over 12,000 contracts, with open interest near 51,100. Net longs were still about 5,600 contracts below their level a month earlier, the same source said. Those figures predate this week's moves. They suggest that traders were not heavily committed to the dollar going into the week.
What a softer dollar means
The practical effects of a 0.36% move are small, but the direction matters. For US investors holding foreign assets, a weaker dollar raises the dollar value of those holdings. For companies and households outside the United States, it slightly lowers the local cost of dollar-priced goods, including oil. For US importers, it does the opposite. None of those effects is large after one week, and the index remains near the top of its 52-week range of 95.55 to 102.94, as listed by the Wall Street Journal.
What to watch
Next week's US calendar is light, with preliminary October business surveys the main release, FXStreet said. The analysts there named 102.50 and 103.00 as levels above the market and 101.50 below, which are their technical judgments rather than forecasts by the Journal. Oil, Treasury yields and the AI selloff are likely to matter more than data. The Fed's decision on 28 October is the next scheduled test. The week's 0.36% fall is modest, and it does not establish a new trend.
Sources
- Market data: ICE US Dollar Index daily OHLC via Yahoo Finance (DX-Y.NYB) fetched 17 Oct 2026; WSJ Market Data DXY historical prices (16 Oct 2026).
- Reporting: Reuters via Euronext (Laura Matthews, New York, and Stefano Rebaudo, London, 16 Oct 2026); FXStreet weekly dollar forecast (16 Oct); Babypips weekly recap (16 Oct); AP via BNN Bloomberg (16 Oct).
- Official data and policy: BLS CPI (14 Oct) and PPI (15 Oct); Federal Reserve FOMC statement (16 Sep 2026); CME FedWatch as cited by Reuters; CFTC positioning as cited by FXStreet.