Over the week of October 3-7, foreign investors injected substantial capital into the Indonesian stock market, registering a significant net buy of IDR 3.45 trillion. This robust buying interest primarily targeted blue-chip stocks, with shares of PT Bank Central Asia Tbk (BBCA) and PT Telkom Indonesia Tbk (TLKM) emerging as the most sought-after among international funds.
During this period, global investors executed total stock purchases amounting to IDR 28.53 trillion in the domestic market. This figure notably surpassed their total sales, which stood at IDR 25.12 trillion, thus affirming the healthy net inflow.
Digging deeper into the buying trends, investors heavily acquired BBCA shares to the tune of IDR 1.71 trillion, followed by TLKM with purchases reaching IDR 799 billion. Other prominently bought stocks included PT Barito Renewables Energy Tbk (BREN) at IDR 527.8 billion, PT Petrosea Tbk (PTRO) valued at IDR 515.5 billion, and PT Astra International Tbk (ASII) attracting IDR 493.3 billion in investments.
Kautsar Primadi Nurahmad, Corporate Secretary of the Indonesia Stock Exchange (BEI), stated in an official release quoted Saturday (8/11) that on Friday (7/11) alone, foreign investors recorded a net buy of IDR 920.24 billion, and throughout the year 2025.
Kautsar further elaborated on the week’s trading data, highlighting varied market movements. Notably, market capitalization experienced its highest surge, escalating by 3.09% to reach a staggering IDR 15,316 trillion, a substantial increase from IDR 14,857 trillion recorded in the preceding week.
In tandem with this impressive growth, the Composite Stock Price Index (IHSG) demonstrated robust strength, climbing by 2.83% to close at 8,394.59. This marks a significant rise from its previous week’s closing of 8,163.88, setting a new all-time high for the IHSG in its history.
However, the average daily transaction frequency saw a slight dip of 6.85%, settling at 2.16 million transactions compared to 2.32 million transactions reported in the prior week.
The robust performance of the IHSG was significantly bolstered by several key stocks this week. Below is a comprehensive list of the top performers that contributed to the index’s ascent:
- PT Dian Swastatika Sentosa Tbk (DSSA): contributed 56.57 points to the IHSG, rising 18.24% in a week
- PT Barito Renewables Energy Tbk (BREN): contributed 53.27 points, up 14.99%
- PT Telkom Indonesia Tbk (TLKM): contributed 28.34 points, up 8.1%
- PT Bank Central Asia Tbk (BBCA): contributed 14.03 points, up 1.76%
- PT Astra International Tbk (ASII): contributed 11.67 points, up 4.47%
- PT Petrindo Jaya Kreasi Tbk (CUAN): contributed 11.66 points, up 13.93%
- PT Petrosea Tbk (PTRO): contributed 10.89 points, up 25.74%
- PT Indokripto Koin Semesta Tbk (COIN): contributed 8.85 points, up 23.81%
- PT Barito Pacific Tbk (BRPT): contributed 8.32 points, up 4.06%
- PT Mora Telematika Indonesia Tbk (MORA): contributed 5.21 points, up 59.6%
Conversely, while some stocks propelled the index forward, a roster of top laggards exerted downward pressure. These shares significantly weighed on the index’s performance:
- PT Jaya Sukses Makmur Sentosa Tbk (RISE): weighed down the IHSG by 11.21 points, dropping 25.81% over the week
- PT Bayan Resources Tbk (BYAN): weighed down by 4.55 points, down 1.52%
- PT Sumber Alfaria Trijaya Tbk (AMRT): weighed down by 4.11 points, down 4.98%
- PT Aneka Tambang Tbk (ANTM): weighed down by 3.90 points, down 6.45%
- PT Indofood Sukses Makmur Tbk (INDF): weighed down by 2.71 points, down 3.72%
- PT Trimegah Bangun Persada Tbk (NCKL): weighed down by 2.62 points, down 10%
- PT Amman Mineral Internasional Tbk (AMMN): weighed down by 2.38 points, down 1.06%
- PT Japfa Comfeed Indonesia Tbk (JPFA): weighed down by 2.36 points, down 8.37%
- PT Pradiksi Gunatama Tbk (PGUN): weighed down by 1.38 points, down 9.29%
- PT Vale Indonesia Tbk (INCO): weighed down by 1.20 points, down 5.05%
Summary
Selama pekan 3-7 Oktober, investor asing membukukan pembelian bersih (net buy) yang substansial sebesar Rp 3,45 triliun di pasar saham Indonesia. Total pembelian saham oleh investor global mencapai Rp 28,53 triliun, melampaui total penjualan sebesar Rp 25,12 triliun. Saham PT Bank Central Asia Tbk (BBCA) senilai Rp 1,71 triliun dan PT Telkom Indonesia Tbk (TLKM) senilai Rp 799 miliar menjadi incaran utama, diikuti oleh PT Barito Renewables Energy Tbk (BREN).
Pada periode yang sama, kapitalisasi pasar BEI melonjak 3,09% mencapai Rp 15.316 triliun. Indeks Harga Saham Gabungan (IHSG) juga menguat 2,83% hingga ditutup di 8.394,59, mencetak rekor tertinggi baru sepanjang sejarahnya. Kenaikan IHSG ini didukung oleh kontribusi signifikan dari beberapa saham unggulan seperti DSSA, BREN, dan TLKM.
