The index of the Indonesian Stock Exchange (BEI) rose 62.19 points or 1.03 percent to 6,118.32 points in the close of the first trading day of this week.
The index of the 45 most liquid stocks rose 1.28 percent to 978.78 points.
Analyst of Trimegah Sekuritas Rovandi said euphoria of the relaxation of trade war between China and the United States is a positive factor for global stock markets.
"The United States and China agreed on armistice in trade tariff war for 90 days . Investors take advantage of the situation by returning to the market buying risk assets such as shares that IHSG continues positive performance," Rovandi said.
He said the rupiah gain over the U.S. dollar and inflation under control contributed to share market performance.
The Central Bureau of Statistics (BPS) said the country`s inflation was only o.27 percent in November bringing the cumulative inflation to 2.49 percent in the first 11 months of the year and 3.23 percent year-on-year in November.
"The sentiments circulating at present gave positive impact psychologically on investors, both externally and internally," Rovandi added.
Trade frequency on Monday reached 447,274 transactions with 14/06 billion shares valued at Rp16.78 trillion changing hands.
Regional markets such as Nikkei, Hang Seng and Strait Times recorded an increase in index.
Reporting by Zubi Mahrofi, Albert Saragih
Editing by Andi Abdussalam