24.09.2026 • 28/2026
Joint Economic Forecast Autumn 2026: Recovery under structural stress – fiscal policy on slippery ground
The German economy has been recovering since the end of 2025. This recovery, although stronger than expected in spring, remains modest. The leading economic research institutes expect GDP growth of 1.3% for the current year and 1.1% and 0.4% for the following two years, respectively. Compared with the spring forecast, the outlook for 2026 has been revised upward by 0.7 and that for 2027 by 0.2 percentage points. “The economy has developed more robustly than expected. However, the recovery rests on a narrow foundation, as high energy prices and structural problems continue to weigh on economic activity,” says Oliver Holtemöller, Head of Macroeconomic Forecasting at the Halle Institute for Economic Research (IWH). In the current quarter, low water levels are also temporarily dampening economic activity. The government deficit continues to increase, leading to a growing need for fiscal consolidation.
Oliver Holtemöller
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03.09.2026 • 25/2026
Economic Outlook: German economy on a recovery path – Tailwinds from the global economy and fiscal policy
An increase in foreign demand has put the German economy on a recovery path in the first half of the year, despite higher energy prices. In the coming quarters, rising public investment is expected to support economic activity. According to the autumn forecast of the Halle Institute for Economic Research (IWH), gross domestic product (GDP) is projected to grow by 1.4% this year and by 0.8% in 2027. Economic recovery in eastern Germany is expected to be somewhat weaker. In June, the IWH economists had predicted growth of 0.9% for both this and the next year.
Oliver Holtemöller
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The Limits of Local Laws in Global Supply Chains: Cutting Ties or “Edutrading” Procurement Partners?
Hendrik Keilbach, Michael Koetter, Melina Ludolph, Fabian Woebbeking
Journal of Development Economics,
Vol. 182 (June),
2026
Abstract
We study the procurement patterns of non-listed firms and examine how these often-overlooked, yet pivotal players in global supply chains adjust their sourcing when they anticipate accountability for externalities beyond their organizational boundaries. Using granular customs data and a surprise information release about the German Supply Chain Due Diligence Act, product-level regressions reveal that importing firms are 3.5 percentage points less likely to source a product from countries where the relevant production sector exhibits elevated ESG-related risks, suggesting that firms tend to cut ties with higher-risk suppliers. The effects are concentrated among firms with well-diversified supplier networks for a product and higher profitability, suggesting they have the necessary flexibility to respond quickly to anticipated regulatory pressure. Our findings suggest that mandates requiring firms to incorporate broad sustainability considerations into their operational decisions may have limits, particularly for non-listed firms.
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Social Capital and Retail Investor Behavior: Evidence From the Corporate Social Irresponsibility Shocks in Taiwan
Dien Giau Bui, Ting-Hsuan Chen, Iftekhar Hasan, Chih-Yung Lin
Journal of International Financial Markets, Institutions and Money,
Vol. 108 (April),
2026
Abstract
In this paper, we use granular trading data from Taiwan between 2012 and 2016 to examine how local social capital influences retail investor behavior during corporate social irresponsibility (CSIR) events. Therefore, we are responding to longstanding calls in the international finance literature to explore investor behavior in non-US markets with distinct institutional and cultural characteristics. We find that investors residing in cities with higher social capital are less likely to purchase underpriced stocks following the announcements of negative events despite the potential for positive abnormal returns. This norm-driven restraint reflects a form of socially responsible investing motivated by community-based values rather than economic rationality. By documenting this behavior in an East Asian market, we extend the external validity of social norm theories developed in Western settings and contribute to a more nuanced understanding of how localized social preferences can influence asset pricing and capital allocation in a global context.
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Do Institutional Investors Exploit Expectation Errors in Value/Glamour Stocks?
Iftekhar Hasan, Jianfu Shen, Chi Cheong Allen Ng
China Accounting and Finance Review,
Vol. 28 (1),
2026
Abstract
This study examines the institutional demand for mispriced stocks with incongruent expectations implied by the book-to-market (BM) ratio and financial strength. Institutional trading (or institutional demand) is calculated by both changes in institutional ownership (percentage of shares held) and the number of institutional investors from the previous to the current quarter. Market mispricing and expectation errors in value/glamour stocks can be identified by analysing firms’ recent financial strength (measured by FSCORE). Firms are sorted into value stocks (top 30%), middle stocks (between 30% and 70%) and glamour stocks (bottom 30%) by distribution of BM ratios at the end of the previous fiscal year. Firms in the sample are then double sorted by FSCORE and BM: in each BM portfolio, firms are further classified into high-, mid- and low-FSCORE groups. Consistent with the argument of expectation errors in value/glamour stocks (Piotroski and So, 2012), institutional investors buy value stocks with strong fundamentals (underpriced) and sell glamour stocks with weak fundamentals (overpriced). Independent institutions are more likely to take advantage of the mispricing in value/glamour firms than passive institutions. Institutional trading on expectation errors could reduce the abnormal returns to mispriced stocks. Institutional trading patterns on mispriced value/glamour stocks are also documented in global markets. Our research provides new evidence that the institutional investors do exploit the BM anomalies if the mispricing can be identified by both the BM and the recent financial strength. Our study differs from Caglayan, Celiker and Sonaer (2018) as we emphasise that financial institutions, in addition to relying on only the BM values, process information from financial statements to infer firms’ financial strength. This study is also the first to document that institutional demand on mispricing could attenuate the BM anomaly.
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14.01.2026 • 2/2026
Compliance with the EU fiscal rules requires extensive consolidation – Medium-term projection of macroeconomic developments and public finances in Germany
Germany faces considerable structural burdens from both macroeconomic and fiscal perspectives, as potential growth is likely to be significantly lower than in past decades. A projection by the Halle Institute for Economic Research (IWH) on macroeconomic developments up to the year 2040 shows that, under unchanged fiscal policies, public debt can be expected to continue rising. The federal government's fiscal-structural plan assumes compliance with EU requirements, but this is only achievable under the assumption of high global spending cuts that have not yet been specified in detail.
Oliver Holtemöller
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Cross-border Transmission of Climate Policies Through Global Production Networks
Marius Fourné
IWH Discussion Papers,
No. 19,
2025
Abstract
Climate policies do not operate in isolation but propagate through global production networks, affecting industries beyond national borders. This paper combines international input-output data with a granular instrumental variable approach to capture how foreign regulations transmit through upstream and downstream linkages. Distinguishing between market-based policies, non-market regulations, and technology support, the analysis shows that foreign climate policies can enhance domestic productivity, with effects shaped by industry characteristics and operating through technological adjustment along supply chains. The results underscore the importance of accounting for international spillovers when evaluating the economic impact of environmental regulation.
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Joint Economic Forecast Autumn 2026 Recovery Under Structural Stress – Fiscal Policy on Slippery Ground September 24, 2026 The German economy has been recovering since the end of…
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