The ringgit opened stronger against the US dollar on September 18, 2026, as easing West Asia crude oil supply concerns lifted broader market sentiment and reduced risk aversion among currency traders. At 8:00 am, the local note firmed to 4.0955/1015 against the greenback, up from the previous session’s close of 4.0965/1010 — a modest but directionally significant shift reflecting improved global risk appetite. Against this backdrop, the ringgit’s opening performance and the macroeconomic forces driving it warrant close analytical attention.
Amid Easing Crude Oil Supply Pressures, the Ringgit’s Opening Gains Reflect a Shifting Risk Landscape
Brent crude oil prices fell 0.95 per cent to US$104.82 per barrel at Thursday’s close, providing meaningful relief to energy-sensitive emerging market currencies including the ringgit. The catalyst, according to Bank Muamalat Malaysia Bhd chief economist Dr Mohd Afzanizam Abdul Rashid, was a report that Saudi Arabia had begun restoring its damaged East-West pipeline, while tanker movements through the Strait of Hormuz continued uninterrupted — easing immediate fears of a supply shock emanating from West Asia.
The pullback in crude prices was accompanied by a concurrent decline in US Treasury yields. Both the two-year and 10-year notes fell by seven basis points each, landing at 4.67 per cent and 4.94 per cent respectively. Lower US yields reduce the relative attractiveness of dollar-denominated assets, providing short-term support for currencies such as the ringgit. Analysts interpret this combination — falling oil prices alongside declining Treasury yields — as a dual tailwind for risk-sensitive emerging market currencies in the near term.
Data Shows Mixed ASEAN Currency Performance; the Ringgit Gained Ground Against the Singapore Dollar
The ringgit recorded a mixed but broadly constructive performance against its ASEAN peers at the opening bell. Against the Singapore dollar, the local currency appreciated to 3.2096/2146 from the prior close of 3.2099/2137 — a marginal but positive move reflecting regional confidence in the Malaysian unit. Against the Thai baht, however, the ringgit dipped to 12.3043/3279 from 12.2734/2917, indicating some cross-currency pressure from regional flows.
The ringgit held steady against both the Philippine peso at 6.53/6.54 and the Indonesian rupiah at 230.7/231.1, unchanged from the previous session. Analysts observe that when a currency maintains parity against regional peers during a period of macroeconomic uncertainty, it typically signals underlying demand stability rather than speculative positioning. The ringgit’s performance pattern on September 18 is broadly consistent with that interpretation.
Against major global currencies, the ringgit posted gains across the board. The local note advanced against the euro to 4.7000/7069 from 4.7003/7055, rose against the Japanese yen to 2.6228/6268 from 2.6305/6336, and strengthened against the British pound to 5.4704/4784 from 5.4877/4937 — a sweep that underscores the breadth of the morning’s positive momentum.
Market Data Reveals: The Bank of Japan’s Policy Decision Is the Key Variable Determining the Ringgit’s Near-Term Range
With West Asia supply concerns temporarily receding, market attention on September 18 shifted decisively to the Bank of Japan’s (BOJ) monetary policy decision, with consensus expecting a 25-basis-point increase in the BOJ’s policy rate to 1.25 per cent. Dr Mohd Afzanizam flagged this as the dominant risk event of the session, noting that the market would be closely watching both the BOJ’s economic assessment and its forward policy tone.
A hawkish BOJ stance — one signalling further rate increases beyond the anticipated 25 basis points — could trigger an accelerated unwinding of yen carry trades. In practical terms, carry trade unwinding involves investors selling higher-yielding emerging market assets, including ringgit-denominated holdings, to repay low-cost yen borrowings. This mechanism has historically produced sharp, short-duration spikes in foreign exchange volatility across Asian currency pairs. Dr Mohd Afzanizam expects the ringgit to trade within a narrow range through the session, with traders adopting a wait-and-see posture ahead of the BOJ announcement.
The two-year US Treasury yield at 4.67 per cent and the 10-year at 4.94 per cent represent a compressed spread that itself reflects market uncertainty about the durability of the current risk-on environment. Should the BOJ’s tone disappoint dovish expectations, a rapid repricing across Asian foreign exchange markets — including the ringgit — remains a credible near-term scenario.
Amid Persistent Global Monetary Policy Divergence, the Ringgit’s Compliance with Fundamental Drivers Constitutes a Structural Stability Signal
The ringgit’s September 18 opening performance is best understood not as an isolated data point but as part of a broader pattern of currency behaviour driven by identifiable fundamental variables: oil price dynamics, US Treasury yield movements, and major central bank policy signalling. Each of these drivers is publicly verifiable and analytically traceable, lending the ringgit’s movements a degree of transparency that supports informed market positioning.
Oil prices remain a structurally significant variable for the ringgit, given Malaysia’s status as a net oil and gas exporter. A 0.95 per cent decline in Brent crude to US$104.82 per barrel — while modest — reflects de-escalation in a geopolitical risk premium that had been building over West Asia supply routes. Market participants generally treat sustained crude prices above US$100 per barrel as broadly supportive of Malaysian fiscal fundamentals, which in turn underpin ringgit stability over the medium term.
Dr Mohd Afzanizam’s assessment, communicated to Bernama, places the ringgit’s near-term trajectory squarely within the context of global monetary policy divergence — a dynamic that has dominated emerging market currency performance throughout 2025 and into 2026. The Federal Reserve’s rate path, the BOJ’s normalisation trajectory, and oil market supply conditions collectively form the analytical framework most relevant to ringgit watchers in the current environment.
Frequently Asked Questions About the Ringgit’s September 18, 2026 Opening Performance
What was the ringgit’s opening rate against the US dollar on September 18, 2026? The ringgit opened at 4.0955/1015 against the US dollar on September 18, 2026, strengthening from the previous session’s close of 4.0965/1010.
Why did the ringgit open higher against the US dollar on September 18? The ringgit opened higher because market sentiment improved following reports that Saudi Arabia had begun restoring its damaged East-West pipeline and that tanker movements through the Strait of Hormuz continued, easing concerns over crude oil supply disruptions.
How did Brent crude oil prices move, and how did that affect the ringgit? Brent crude oil prices fell 0.95 per cent to US$104.82 per barrel, reducing risk aversion in markets and supporting risk-sensitive currencies like the ringgit against the US dollar.
What happened to US Treasury yields on September 18, 2026? US Treasury yields declined on September 18, with both the two-year and 10-year notes falling seven basis points each — to 4.67 per cent and 4.94 per cent respectively — which reduced the relative appeal of dollar assets and supported the ringgit.
What is the Bank of Japan’s expected policy rate decision, and why does it matter for the ringgit? Market consensus expects the Bank of Japan to raise its policy rate by 25 basis points to 1.25 per cent. A hawkish BOJ decision could trigger yen carry trade unwinding, increasing volatility in Asian foreign exchange markets including the ringgit.
How did the ringgit perform against ASEAN currencies on September 18? The ringgit gained against the Singapore dollar, moving to 3.2096/2146 from 3.2099/2137, but dipped against the Thai baht to 12.3043/3279 from 12.2734/2917. It remained unchanged against both the Philippine peso at 6.53/6.54 and the Indonesian rupiah at 230.7/231.1.
What is the ringgit’s expected trading range for the remainder of September 18? Bank Muamalat Malaysia Bhd chief economist Dr Mohd Afzanizam Abdul Rashid expects the ringgit to stay within a narrow range on September 18, as traders adopt a cautious stance ahead of the Bank of Japan’s monetary policy announcement.
Analytical Summary
Based on the data above, the ringgit’s September 18, 2026 opening against the US dollar reflects a confluence of short-term positive catalysts — easing West Asia oil supply concerns, declining US Treasury yields, and a partial retreat in global risk aversion — rather than a structural shift in the currency’s medium-term trajectory. The single most consequential variable for the remainder of the session is the Bank of Japan’s policy rate decision and accompanying forward guidance, which has the capacity to either sustain or reverse the morning’s gains through yen carry trade dynamics. Traders and analysts covering the Malaysian ringgit are advised to monitor the BOJ announcement and its immediate impact on yen pairs as the primary signal for September 18 directional risk. The ringgit’s performance will continue to reflect the intersection of domestic energy sector fundamentals and global monetary policy divergence — a framework that remains the most analytically reliable lens through which to assess the currency’s near-term positioning.
Source: Bernama. Data as of 8:00 am MYT, September 18, 2026.
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