Jakarta. Jakarta Composite Index (JCI) finished Monday’s session firmly in the green, closing up 106 points, or 1.25%, at 8,644 after moving within a range of 8,545–8,652.

RTI data showed trading volume reached 41.11 billion shares, with turnover totaling Rp 22.84 trillion ($1.36 billion) across 2.7 million transactions. Market breadth was positive, with 464 stocks advancing, 213 declining, and 131 unchanged.

Among the day’s top gainers, Bank Capital Indonesia (BACA) soared 34.76% following news that Bank of Singapore had acquired 2.8 billion BACA shares worth Rp 470.40 billion ($28.04 million) on Dec. 19. Optima Prima (OPMS) jumped 30%, while Harta Aman Pratama (AHAP) climbed 27.96% and Perintis Triniti Properti (TRIN) surged 25%.

On the losing side, Mustika Ratu (MRAT) led declines with a 14.81% drop, followed by Pudjiadi Prestige (PUDP), down 14.74%. Ulima Nitra (UNIQ) slid 14.69%, while Trimitra Prawara Goldland (ATAP) retreated 14.62%.

Bank Indonesia reported a net foreign capital inflow of Rp 3.98 trillion into domestic financial markets during the fourth week of December, covering the Dec. 22–23, 2025 period. Foreign investors recorded net purchases across all major instruments, including Rp 1.59 trillion in equities, Rp 1.66 trillion in government bonds (SBN), and Rp 0.74 trillion in Bank Indonesia Rupiah Securities (SRBI).

According to Pilarmas Investindo Sekuritas, the sustained foreign inflows offer a positive year-end signal, reflecting continued confidence in Indonesia’s economic stability and outlook, while reinforcing the resilience of the country’s economic fundamentals.

Across Asia, most stock markets traded lower in thin holiday sessions as China conducted military drills near Taiwan. Taiwanese shares edged higher despite the exercises, while Beijing said the maneuvers were meant to warn against separatist movements and what it called external interference. Taiwan placed its forces on alert and criticized Beijing as a threat to regional peace.

Regionally, Taiwan’s Taiex rose 0.9%, while Hong Kong’s Hang Seng slipped 0.7% to 25,637.69 and the Shanghai Composite was largely flat at 3,965. Japan’s Nikkei 225 eased 0.4% to 50,526.92.

South Korea’s Kospi jumped 2.2% to 4,220.56, nearing its all-time high. Gains were led by a 6.8% surge in SK Hynix after a regulatory change lifted an investment warning on the stock, while Samsung Electronics advanced 2.1%.

On Wall Street, US stocks edged slightly lower as markets reopened on Friday after the Christmas holiday. The S&P 500 and the Dow Jones Industrial Average each slipped by less than 0.1%, while the Nasdaq Composite declined 0.1%.

Despite the mild pullback, the S&P 500 remains up nearly 18% for the year with just three trading days left in 2025, supported by expectations of looser regulation under the Trump administration and sustained investor optimism toward artificial intelligence. Trading activity stayed light as many institutional investors have largely closed out their books for the year.

Pilarmas noted that markets are also factoring in the possibility of another interest rate cut in 2026, even as US Federal Reserve officials remain divided on the policy outlook, with most projecting only one additional reduction. The brokerage added that investors will be watching closely for the appointment of the next Fed chair, as President Donald Trump is expected to announce a successor to Jerome Powell in early 2026, a move that could shape expectations for future rate cuts.