Journal of Economics, Entrepreneurship, Management Business and Accounting
Vol 4 No 5 (2026): Volume 4, Issue 5, September 2026

Market Capitalization Volatility, Profitability, and Leverage: A Comparative Four-Case Study of Indonesia's Energy and Technology Firms

Hikmahwati Hikmahwati (Politeknik Negeri Banjarmasin, Indonesia)
Widya Ais Sahla (Politeknik Negeri Banjarmasin, Indonesia)
Sandra Iriawan (Politeknik Negeri Banjarmasin, Indonesia)
Noor Safrina (Politeknik Negeri Banjarmasin, Indonesia)
Nurul Qalbiah (Politeknik Negeri Banjarmasin, Indonesia)
Mark Gabriel Wagan Aguilar (Technological College, Philippines)



Article Info

Publish Date
18 Aug 2026

Abstract

Purpose – This exploratory study examines preliminary associations between market capitalization volatility, profitability, and leverage across four Indonesian energy and technology firms, drawing on Signaling Theory. With only two firms per sector, sector differences are treated as case-level heterogeneity, not established moderation. Design/methodology/approach – Using a multi-case panel design, the study analyzes four Indonesian firms over 2014–2024 (44 firm-year observations): two energy firms (Adaro Energy, Indonesia Energy Corporation) and two technology firms (Telkom Indonesia, Elang Mahkota Teknologi). The small sample confounds sector with firm identity, so comparisons are descriptive, not tested moderation. VMC1 and VMC2 were recomputed as annual rolling-window series, replacing a prior full-period constant confounded with sector identity. Variables were z-standardized, volatility mean-centered before interaction terms, examined via marginal effects. Findings/Results – Volatility is positively associated with profitability and negatively with leverage across all cases. With corrected VMC1/VMC2, sector does not moderate either association, stable across leave-one-firm-out checks. A lagged specification shows both associations disappear with temporal separation, indicating associative not causal relationships. Originality/Value – The study offers a descriptive account of how an apparent sector-moderation finding can arise from a measurement artifact and disappear once corrected—a cautionary illustration for future research.

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Journal Info

Abbrev

JEEMBA

Publisher

Subject

Economics, Econometrics & Finance

Description

Journal of Economics, Entreprenurship, Management Business and Accounting (JEEMBA) mencakup bidang ekonomi dan keuangan, manajemen bisnis dan akuntansi khususnya bidang akuntansi, manajemen, pasar modal, hukum bisnis, perpajakan, sistem informasi, serta bidang ekonomi dan keuangan lainnya. JEEMBA ...