درخت حوزه‌های تخصصی

The main goal of managing for-profit companies is to maximize shareholders' wealth, and to achieve it, management needs to make decisions regarding the sources and uses of capital. Different theories have been tried to explain the relationship between capital structure and performance, and have estimated a different relationship for financial leverage and company performance in different conditions. Financial leverage and operational leverage are two factors that influence the performance and macro policies of the company in terms of the profitability process. This research examines the effect of operational leverage and financial leverage on the company's profitability and financial distress, and finally examines the effect of replacing these two Leverages to maximize the profitability process and reduce the risk of financial distress. The sample includes 263 companies listed in the Tehran Stock Exchange and the Iran OTC Company from 2011 to 2021, which have passed the four screening factors of this study. The fixed effect panel regression method was used to test the first and second hypotheses. The results indicate a positive relationship between operational leverage and the profitability of companies, while the relationship between financial leverage and the profitability of companies is negative. On the other hand, both Leverages increase the risk of financial helplessness. To improve profitability, operational leverage can be replaced by financial leverage. Increasing operational leverage and reducing financial leverage can be used as a tool to grow the company's profitability; however, to reduce the helplessness of the companies and improve the profitability process, operational leverage can be replaced with financial leverage. Flexibility in financing companies is more than flexibility in the operational sector; that is why replacing operational leverage with financial leverage is more appropriate to improve profitability and reduce the risk of financial helplessness.

This study conducts a comprehensive examination of the interlinkages among four key financial markets—crude oil, gold, currency, and equities—over the July 23, 2013, to March 12, 2025. This study employs the Contemporaneous and Lagged R2 Decomposed connectedness approach recently introduced by Balli et al. (2023), which allows us to decompose the connectedness among variables into lagged and contemporaneous components. As the previous approaches only show overall or contemporary results, this novel approach fills the gap in the literature. The findings reveal that most spillovers occur contemporaneously, with the U.S. dollar playing a central role in the propagation of contemporaneous shocks. In contrast, gold emerges as a significant transmitter of long-term shocks, underscoring its relevance for strategic risk management. Moreover, crude oil is the main receiver of shocks in the average and lagged connectedness in the network. Dynamic analyses indicate heightened market sensitivity during periods of geopolitical tension, particularly under intensified sanctions and currency volatility in Iran. By uncovering the evolving structure of cross-market dependencies, this research offers valuable insights for portfolio allocation, systemic risk assessment, and the formulation of responsive economic policies in times of financial stress.