Using firm-level balance sheet data for 20 of the 24 exchange companies in Pakistan for the period 2006-11, we explore the sources of firms' vulnerability to short-term financing shocks. Based on the probability estimates of a maximum likelihood binary probit model, this paper shows that the incidence and degree of vulnerability of foreign exchange companies to short-term financing shocks has risen significantly over time. If not managed opportunely, these shocks can cumulate into long-term financing shocks and even lead to corporate failure in the long run. Our regression results show that the corporate managers of these companies cannot ignore macroeconomic factors such as global changes and the macroeconomic environment (inflation and GDP growth) in addition to firm-specific factors (growth opportunities, firm size, permanent earnings, earnings volatility, and working capital management) when managing their firms' vulnerability to short-term financing shocks.Keywords: Foreign exchange companies, vulnerability, financing shocks, Pakistan.JEL classification: G33, G30 L80, L89.(ProQuest: ... denotes formulae omitted.)1. IntroductionGenerally, companies' financial reporting entails documenting three types of cash flows: operating, investing, and financing flows. Operating cash flows arise on account of a company's normal business operations and are crucial because they indicate a firm's capacity to generate sufficient positive cash flows to maintain and expand its operations. In case of corporate failure, firms may require external financing, consequently raising the probability of rolling over their current liabilities and becoming exposed to funding shocks.These funding shocks, if not managed well in time, can erode the firm's capital to a potentially dangerous extent (Tudela & Young, 2003b) and lead to corporate bankruptcy or failure. However, at the root of these corporate failures is the inability of firms to overcome or manage their response to short-term funding shocks. Understanding the sources of vulnerability to such shocks is, therefore, critical for corporate managers as well as for investors seeking credit exposure (see Chan-Lau & Gravelle, 2005) to such vulnerable companies. Initially, these funding shocks may weaken a firm's liquidity, but they can also affect the solvency of the corporate sector, potentially destabilizing the economy as a whole if the sector is important. Understanding the sources of vulnerability of foreign exchange companies to short-term financing shocks is crtical, given the foreign exchange exposure of the financial and real sectors in the Pakistan's current exchange rate crisis.We observe a relatively significant and high degree of volatility in these firms' net operating cash flows compared to their revenue, administrative, general expense, and profit-after-tax flows during the period 2006-11 (Figures 1 and 2). Net operating cash flows are consistently below current liabilities (Figure 2) and provide evidence of the vulnerability of foreign exchange companies to short-term financing shocks in Pakistan. This evidence forms the basis for this study. Currently, there is scant literature on the vulnerability of exchange firms to short-term funding shocks and no attempt has been made to explore the sources of this vulnerability in the context of Pakistan. Accordingly, this study aims to fill this gap in the literature.The paper is organized as follows: Section 2 reviews the literature; Section 3 describes the data sources and variables employed, and discusses the study's research design and methodology; Section 4 presents our results; and Section 5 concludes the study.2. Review of the LiteratureHong and Wu (2013) estimate a discrete-time hazard model of bank failure using data on US commercial banks for the period 1985-2004. They identify idiosyncratic and systemic funding liquidity risks as a major predictor of bank failures in 2008 and 2009. …