Blue-chip stocks
TANGERANG, investor.id – Most of the stock market’s total capitalisation on the Indonesia Stock Exchange (IDX) is concentrated in a number of large issuers. According to IDX statistics for September 2026, the 50 stocks with the largest market capitalisation accounted for around 66.64% of the exchange’s total market value. This dominance highlights the significant role played by large-cap companies in the domestic stock market.
Company size, however, is not the sole measure of a stock’s quality. Investors should also consider fundamentals, business stability and a company’s performance record. In investment, high-quality leading stocks of this kind are known as “blue chips”.
Citing Pluang on Tuesday (10 November 2026), the article says “blue chip” refers to shares in large-cap issuers that have high liquidity, a long business history and relatively stable financial performance. Investors should understand, however, that this is not an official category established by the IDX; consequently, there is no definitive standard list of blue-chip stocks.
Several criteria are generally used to identify blue-chip stocks. The first is market capitalisation, calculated by multiplying a share’s price by the number of shares outstanding. Issuers classified as blue chip are usually in the large-cap category.
The next considerations are liquidity and free float, or the shares available to the public. Large market capitalisation does not necessarily mean a stock is easy to trade. More important are its daily trading value and the proportion of shares genuinely available on the market. A large-cap issuer with a small free float may, in fact, have lower-than-expected liquidity.
The third criterion is consistent profitability. The focus is not on the size of profits in a particular period, but on a company’s ability to generate earnings consistently over several years, including during economic downturns. A track record spanning different economic cycles is far more informative than high earnings in just one year.
Fourth is a record of paying dividends. Regular dividend payments indicate adequate operating cash flow and a relatively predictable policy. Dividends are not an obligation: their distribution is decided each year at the General Meeting of Shareholders (RUPS) and may change at any time. Past payments therefore do not guarantee future dividends.
The final criterion is membership of a benchmark index. Indices such as the LQ45 and IDX30 select constituents according to criteria set by the stock exchange, including liquidity, market capitalisation and fundamental conditions. Inclusion in these indices is therefore a strong indicator of blue-chip status, as the criteria are publicly disclosed and stocks are assessed directly by the exchange rather than by compilers of an arbitrary list.
Investors, particularly beginners interested in blue-chip stocks, should understand that the exchange does not officially designate any shares as blue chip. Instead, it provides listing boards, industry classifications and index constituents, along with the criteria used to select them. As with other investment assets, share trading carries the risk of losing some or all of one’s capital, even when investing in large-cap companies.