A Volatile Week in Global Markets: Oil Swings as Gold Posts a Modest Gain

Brent and WTI ended the September 11–18 period slightly lower, while gold edged higher despite a stronger dollar and another U.S. rate increase.

Published: Sep 19, 2026, 06:19 AM
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A Volatile Week in Global Markets: Oil Swings as Gold Posts a Modest Gain
Summary

Global oil and gold markets were volatile between September 11 and 18. Brent crude fell 0.71 percent to $103.87 a barrel, while WTI declined 0.52 percent to $99.53. Supply-disruption concerns linked to Middle East developments were partly offset by reports of additional crude flows and efforts to restore pipeline operations. Gold rose 0.16 percent to $4,415.90, supported in part by lower oil prices and easing inflation concerns, although gains were limited by a stronger dollar and the Federal Reserve’s 0.25-percentage-point rate increase.

Global oil and gold markets experienced a volatile week as geopolitical developments in the Middle East, concerns about possible disruptions to crude supplies, changing inflation expectations and U.S. monetary policy shaped investor sentiment.

Data published by Investing and cited in a report by Iran’s IRNA news agency showed that both Brent crude and West Texas Intermediate (WTI) declined modestly between September 11 and September 18. Gold, by contrast, ended the period slightly higher, even as the dollar strengthened and the U.S. Federal Reserve raised interest rates.

## Oil prices fluctuate amid supply concerns

Brent crude stood at $104.61 a barrel at the beginning of the period on September 11 and fell to $103.87 by the close of trading on September 18. The decline amounted to 74 cents, or 0.71 percent, leaving Brent with a generally downward trend for the week.

The benchmark nevertheless moved through a broad daily range. Its highest recorded price during the period was $109.97 a barrel, while its lowest was $101.53.

WTI followed a similar pattern. The U.S. crude benchmark dropped from $100.05 a barrel on September 11 to $99.53 on September 18, a decline of 52 cents, or 0.52 percent. WTI reached a high of $106.75 during the period and a low of $95.71.

The relatively small weekly losses came despite heightened concern over the security of oil supplies. Reuters reported on Thursday that the market was assessing the consequences of attacks involving Saudi Arabia and Yemen’s Houthis, as well as reports that additional Saudi oil cargoes could enter global markets.

According to the Reuters account cited by IRNA, the latest attacks increased concerns that disruptions to global crude supplies could intensify. At the same time, reports of higher crude flows through additional maritime loadings via Oman and efforts to restore operations on the East-West pipeline helped ease some of those concerns.

The contrasting developments left the market highly sensitive to new information. Concerns about potential supply losses supported prices during parts of the week, while reports pointing to additional flows or the restoration of infrastructure reduced some of the upward pressure. Oil ultimately closed the period slightly below its starting level.

## Gold advances slightly despite higher rates and a stronger dollar

Gold futures also fluctuated, but finished the period with a modest gain. According to Investing data, the price of gold rose from $4,408.90 on September 11 to $4,415.90 on September 18. The $7 increase represented a gain of 0.16 percent.

Gold recorded a high of $4,444.90 during the period and a low of $4,273. The move marked only a limited weekly advance, but Reuters reported that gold reached a one-week high on Friday and was on course for its first weekly increase in four weeks.

One factor supporting the precious metal was the decline in oil prices. Lower oil prices reduced concerns about the persistence of inflationary pressure, a development that helped create a more favorable backdrop for gold, according to the Reuters report cited by IRNA.

Gold’s advance was restrained by the rise in the U.S. dollar. The dollar index reached its highest level in more than seven weeks during the week. A stronger dollar generally makes gold more expensive for buyers using other currencies, limiting demand and putting pressure on the metal’s price.

U.S. interest-rate policy provided another countervailing force. On Wednesday, the Federal Reserve raised its policy rate by 0.25 percentage point, bringing the target range to 3.75 to 4 percent. The U.S. central bank also indicated that further increases could be possible in the coming months.

Higher interest rates typically reduce the relative appeal of gold compared with assets that offer a yield. Gold does not provide a regular interest payment, so rising rates can increase the opportunity cost of holding it. In this case, however, the effect of lower oil prices and reduced inflation concerns helped offset some of the pressure from the stronger dollar and higher rates.

## Market direction remains dependent on competing forces

The week’s performance highlighted the competing factors affecting both commodities. Oil prices were pulled between fears of a wider disruption to supply and indications that additional crude could reach the market. Gold benefited from lower oil prices and easing inflation concerns, but faced resistance from a stronger dollar and tighter U.S. monetary policy.

By the end of the September 11–18 period, Brent and WTI had recorded modest declines, while gold had gained slightly. The limited size of the weekly moves, combined with the wide intraperiod trading ranges, underscored the market’s sensitivity to geopolitical developments, supply expectations and signals from the Federal Reserve.