Article Per Year (5 Year)
p-Index From 2021 - 2026
0.408
P-Index
This Author published in this journals
All Journal Journal of Management - Small and Medium Enterprises (SME's)
Petrus E de Rozari
Department of Management, Faculty of Economics and Business, University of Nusa Cendana
Economics, Econometrics & Finance

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Sharpe vs Treynor: Strategies for evaluating stock portfolio performance on the Indonesian Stock Exchange Thersia M M Da Silva; Petrus E de Rozari; Darwin Zebua; Efandri Agustian
Journal of Management Small and Medium Enterprises (SMEs) Vol 19 No 2 (2026): JOURNAL OF MANAGEMENT Small and Medium Enterprises (SME's)
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jom.v19i2.26171

Abstract

This study investigates whether the Sharpe Ratio and Treynor Ratio produce significantly different portfolio performance rankings in the Indonesian stock market. A quantitative research design was employed using a sample of 11 large-capitalization companies representing each IDX-IC sector listed on the Indonesia Stock Exchange during the 2020–2024 period. An optimal portfolio was constructed under a 0%–30% asset allocation constraint, and portfolio performance was assessed using the Sharpe Ratio and Treynor Ratio. Differences in portfolio rankings were examined through descriptive, comparative, and paired t-test analyses. The optimized portfolio generated an expected return of 74.60%, with a Sharpe Ratio of 5.60 and a Treynor Ratio of 0.0697. The paired t-test yielded a p-value of 0.331, indicating no statistically significant difference between the rankings produced by the two performance measures. These findings suggest that, for well-diversified portfolios in which unsystematic risk has been effectively diversified away, the Sharpe Ratio and Treynor Ratio provide comparable assessments of investment performance. This study extends the evidence on risk-adjusted portfolio evaluation in an emerging market context and provides practical implications for investors and portfolio managers in selecting appropriate performance measurement approaches. Keywords: Sharpe Ratio; Treynor Ratio; Portofolio Performance; Indonesian Stock Exchange
Analysis of social capital in increasing the income of business actors in the Oebobo traditional market, Kupang City Humbelina Sintia Putri Tael; Petrus E de Rozari; Chrispy Theresia P Daud; Efandri Agustian
Journal of Management Small and Medium Enterprises (SMEs) Vol 19 No 2 (2026): JOURNAL OF MANAGEMENT Small and Medium Enterprises (SME's)
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jom.v19i2.26930

Abstract

This study aims to analyze the forms, roles, and supporting and constraining factors of social capital in improving the income of business owners at Oebobo Traditional Market, Kupang City. A qualitative descriptive approach was employed using survey methods, with data collected through direct observation and Focus Group Discussions (FGDs) involving traders from the fish, meat, vegetable, and fruit sectors. The analysis focused on three dimensions of social capital: trust, social networks, and social norms. The findings reveal that the market is characterized by survival-oriented social capital, in which long-established trust and strong social solidarity facilitate business continuity. However, social capital remains limited in fostering strategic collaboration, institutional linkages, and market expansion. Rather than substantially increasing income, social capital primarily functions to stabilize cash flow, reduce transaction costs through trusted information exchange, and protect traders' reputations. Long-term trust with suppliers and efficient informal information networks emerged as the main enabling factors, while individualistic competition, weak relationships with government institutions, and the risk of unpaid debts arising from cultural reluctance to enforce payment obligations were identified as major constraints. These findings contribute to the social capital literature by demonstrating that, within traditional market settings, social capital is more effective in sustaining business resilience than in driving income growth or business expansion. They also highlight the need to strengthen institutional networks and collaborative market governance to enhance the economic benefits of social capital. Keywords: Social Capital; Business Income; Oebobo Market; Trust; Networks; Norms
Co-Authors Chrispy Theresia P Daud Darwin Zebua Efandri Agustian Humbelina Sintia Putri Tael Thersia M M Da Silva