Singapore's Straits Times Index fell 32.85 points, or 0.6 percent, to close at 5,634.82 on Friday as escalating United States–Iran tensions lifted Brent crude past US$102 a barrel.
The session range ran between 5,624.70 and 5,686.79, showing intraday attempts to recover that faded into the close. Losers outnumbered gainers across the broader market, with about 1.3 billion shares worth S$2.6 billion traded according to session summaries.
Blue-chip movers
DFI Retail Group plunged 8.8 percent to US$3.10, the steepest decline among STI constituents, while Thai Beverage rose 1.2 percent to S$0.43, leading the index gainers. CapitaLand Investment slipped nearly 2 percent despite publishing strong GRESB sustainability scores earlier in the day.
Mid-cap industrial names tied to oil and gas services saw two-way flows as traders hedged supply shock scenarios. Semiconductor testers rallied midweek on Micron-led memory optimism but gave back part of the gains when the macro overlay turned defensive.
Macro overlay
United States September payrolls due Friday night Singapore time added another catalyst. Economists surveyed before the release expected job growth near 84,000 with unemployment around 4.2 percent; a surprise in either direction could spill into Monday's open.
September had already trimmed the STI: the index ended last month at 5,675.88, down 1.4 percent from August even after touching a record 5,828.5 on 4 September. October's first week therefore starts from a lower base with oil as the swing factor.
Portfolio context for retail investors
Singapore investors holding Central Provident Fund Ordinary Account equities exposure through unit trusts should expect mark-to-market noise rather than forced flows; CPF stock limits differ from cash brokerage accounts. For direct STI ETF holders, the dividend capture season is weeks away, but near-term returns will track oil and bank earnings prep.
Analysts say support near 5,600 held on Friday; a break lower would test the 5,550 zone last seen during August's volatility spike. Until Middle East shipping lanes stabilise, expect energy prices to dominate local index commentary more than company-specific beats.
Sector breadth and flows
Semiconductor testers aside, banks traded mixed with DBS slightly lower and UOB higher after Thursday's session carried into Friday morning. REITs linked to Singapore office occupancy saw modest outflows as work-from-office rates plateaued in third-quarter tenant surveys.
Foreign funds remained net buyers on Thursday according to session data cited by local desks, but Friday's oil shock prompted profit-taking in cyclicals tied to shipping and rig services. Asiatic Group's 33 percent plunge on a Malaysian EV dealership deal reminded retail investors that mid-cap single-name risk still dwarfs index moves on quiet days.
Monday's open will test whether 5,600 holds if United States payrolls surprise to the upside, which could lift the dollar and pressure emerging Asia indices including Singapore.