Straits Times Index (STI) Index — Level, Chart & Constituents

What the Straits Times Index (STI) measures

The Straits Times Index (STI) is a stock market index that tracks the performance of the largest companies listed on the Singapore Exchange. It serves as a broad barometer for the Singapore equity market and is part of the wider Asia-Pacific region. Because it is a market-capitalisation-weighted index, larger companies have a greater influence on its movements.

Key numbers explained

• The current 5,711.12 points represent the latest calculated level of the Straits Times Index (STI), reflecting the aggregate market value of its constituents.
• Today's range of 5,665.35 – 5,716.53 shows the lowest and highest levels reached during the trading session.
• The +0.49% price change indicates the session's net movement relative to the previous close.
• The 52-week low of 4,264.99 and high of 5,828.5 mark the lowest and highest levels the index has reached over the past year.
• The index is denominated in SGD, the currency used for trading on the Singapore Exchange.
• The index level is a single number that summarises the collective price performance of all included stocks; it is not a price itself but a scaled measure.
• A market-capitalisation-weighted index gives more influence to companies with a higher total market value, so their share-price moves shift the level more than those of smaller constituents.

Recent news

• PPMW has launched a telehealth herpes treatment through Planned Parenthood Direct, meeting rising demand for STI care.
• Testie Health has launched nationwide to make STI testing simpler, faster, and less stigmatized.
• The STI & HIV 2025 World Congress in Montréal has given more than $55,000 to six community organizations.
• A national study of 1.5 million women by Quest Diagnostics has found bacterial vaginosis linked to increased STI co-infection.
• STD Hero has showcased at-home STI testing in New Orleans during Naughty N'awlins.
• Asia stocks have gained on softer U.S. inflation, while oil has risen as the U.S. restarts a blockade.

What to watch

Investors often monitor the Straits Times Index (STI) alongside regional peers such as the BSE Sensex, TAIEX (Taiwan Capitalization Weighted), SET50, Nifty 50, KOSPI 200, Hang Seng Index, and KOSDAQ Composite to gauge broader Asia-Pacific sentiment. Factors that typically affect this kind of index include global commodity prices, regional monetary policy decisions, trade flows, and investor sentiment toward large-cap Singapore-listed companies. Because the Straits Times Index (STI) is market-capitalisation-weighted, shifts in the largest constituents can move the level more than changes in smaller stocks.