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Martina Jasova

27 March 2026
WORKING PAPER SERIES - No. 3209
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Abstract
We show that losses on banks’ securities portfolios matter for the transmission mechanism of monetary policy even in the absence of financial stability concerns. When banks experience losses in their pledgeable securities, their ability to tap liquidity through the interbank market is impaired, and they subsequently reduce illiquid corporate lending, regardless of whether the securities were recorded at market or historical value. These effects are less pronounced for banks with abundant collateral and reserves and for banks that receive liquidity through their group’s internal capital market. Our results highlight a collateral channel in the bank-based transmission of monetary policy.
JEL Code
G21 : Financial Economics→Financial Institutions and Services→Banks, Depository Institutions, Micro Finance Institutions, Mortgages
E43 : Macroeconomics and Monetary Economics→Money and Interest Rates→Interest Rates: Determination, Term Structure, and Effects
E52 : Macroeconomics and Monetary Economics→Monetary Policy, Central Banking, and the Supply of Money and Credit→Monetary Policy
E58 : Macroeconomics and Monetary Economics→Monetary Policy, Central Banking, and the Supply of Money and Credit→Central Banks and Their Policies
Network
Challenges for Monetary Policy Transmission in a Changing World Network (ChaMP)
18 December 2023
WORKING PAPER SERIES - No. 2882
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Abstract
Using confidential information on banks’ portfolios, inaccessible to market participants, we show that banks that emphasize the environment in their disclosures extend a higher volume of credit to brown borrowers, without charging higher interest rates or shortening debt maturity. These results cannot be attributed to the financing of borrowers’ transition towards greener technologies and are robust to controlling for banks’ climate risk discussions. Examining the mechanisms behind the strategic disclosure choices, we highlight that banks are hesitant to sever ties with existing brown borrowers, especially if they exhibit financial underperformance.
JEL Code
G11 : Financial Economics→General Financial Markets→Portfolio Choice, Investment Decisions
G15 : Financial Economics→General Financial Markets→International Financial Markets
G21 : Financial Economics→Financial Institutions and Services→Banks, Depository Institutions, Micro Finance Institutions, Mortgages
6 December 2023
THE ECB BLOG
Banks are talking more about the environment. But does such talk go hand in hand with greener lending? The ECB Blog finds a disconnect: banks talking more about their environmental policies and goals tend to lend more to brown industries.
Details
JEL Code
G11 : Financial Economics→General Financial Markets→Portfolio Choice, Investment Decisions
G15 : Financial Economics→General Financial Markets→International Financial Markets
G21 : Financial Economics→Financial Institutions and Services→Banks, Depository Institutions, Micro Finance Institutions, Mortgages
19 October 2022
THE ECB BLOG
The ECB Blog investigates how change in the policy rate affects wages very differently depending on characteristics of employees and firms, such as firms’ size and their access to credit. Results show that the effects are symmetric during times of easing and tightening.
Details
JEL Code
E52 : Macroeconomics and Monetary Economics→Monetary Policy, Central Banking, and the Supply of Money and Credit→Monetary Policy
D22 : Microeconomics→Production and Organizations→Firm Behavior: Empirical Analysis
D31 : Microeconomics→Distribution→Personal Income, Wealth, and Their Distributions
G01 : Financial Economics→General→Financial Crises
G21 : Financial Economics→Financial Institutions and Services→Banks, Depository Institutions, Micro Finance Institutions, Mortgages
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8 February 2021
WORKING PAPER SERIES - No. 2521
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Abstract
We show that a reduction in lender of last resort (LOLR) policy uncertainty positively affects bank lending and propagates to investment and employment. We exploit a unique policy that reduced uncertainty regarding the availability of future LOLR funding for banks as a quasi-natural experiment. Using micro-level data on banks, firms and loans in Portugal, we generate cross-sectional variation in banks’ exposure to uncertainty and find that the size of the haircut subsidy - the gap between private market and central bank security valuations - plays a key role in the propagation of the shock to lending and the real economy.
JEL Code
E44 : Macroeconomics and Monetary Economics→Money and Interest Rates→Financial Markets and the Macroeconomy
E52 : Macroeconomics and Monetary Economics→Monetary Policy, Central Banking, and the Supply of Money and Credit→Monetary Policy
E58 : Macroeconomics and Monetary Economics→Monetary Policy, Central Banking, and the Supply of Money and Credit→Central Banks and Their Policies
G21 : Financial Economics→Financial Institutions and Services→Banks, Depository Institutions, Micro Finance Institutions, Mortgages
G32 : Financial Economics→Corporate Finance and Governance→Financing Policy, Financial Risk and Risk Management, Capital and Ownership Structure, Value of Firms, Goodwill
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