EFEK INFORMASI AKUISISI TERHADAP HARGA SAHAM, RETURN SAHAM, ABNORMAL RETURN, DAN TRADING VOLUME ACTIVITY PT. PETRINDO JAYA KREASI TBK TAHUN 2023. vol [Internet]. 2025 Feb. 6 [cited 2026 Sep. 1];7(1). Available from: https://jurnal.umpwr.ac.id/index.php/volatilitas/article/view/6120