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

The Data Paradox in Equity Valuation: A Panel Data Study of IDX Large-Cap Stocks

Joana L. Saragih (Universitas Katolik Santo Thomas Medan, Indonesia)
Novi Natalia Padang (Universitas Katolik Santo Thomas Medan, Indonesia)
Romasi Lumban Gaol (Universitas Katolik Santo Thomas Medan, Indonesia)
Riko Fridolend Sianturi (Universitas Katolik Santo Thomas Medan, Indonesia)



Article Info

Publish Date
01 Sep 2026

Abstract

Purpose – This paper empirically investigates the determinants of equity valuation during anomalous macroeconomic periods, focusing on the stock price levels of large-capitalization ("Big Cap") companies listed on the Indonesia Stock Exchange (IDX). Design/methodology/approach – The research utilizes a panel data regression model on a purposive sample of 16 Big Cap firms over the 2019–2024 period, yielding 96 firm-year observations. The study analyzes the impact of four fundamental variables: Return on Equity (ROE), Current Ratio (CR), Earnings per Share (EPS), and Debt to Equity Ratio (DER). Finding/Results – The empirical findings reveal a nuanced decoupling effect. Return on Equity (ROE), Current Ratio (CR), and Debt to Equity Ratio (DER) exhibited no statistically significant influence on closing stock prices at the 5% level. Conversely, Earnings per Share (EPS) demonstrated a highly significant positive effect on equity valuation (p = 0.0000). Originality/Value – Rather than confirming conventional linear relationships, the study highlights a sustained empirical anomaly during the 2019–2024 window where traditional metrics (ROE and CR) lacked predictive power. The paper proposes the "Data Paradox" as a theoretical framework to explain this decoupling, underscoring the need for future models to explicitly test macroeconomic stress interactions in emerging markets.

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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 ...