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THE PEER MONITORING ROLE OF THE INTERBANK MARKET IN KENYA AND IMPLICATIONS FOR BANK REGULATION By Victor Murinde , Ye Bai, Christopher J. Green, Isaya Maana, Samuel Tiriongo , Kethi Ngoka- Kisinguh Murinde : University of Birmingham Bai: University of Nottingham
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THE PEER MONITORING ROLE OF THE INTERBANK MARKET IN KENYA AND IMPLICATIONS FOR BANK REGULATION By Victor Murinde, Ye Bai, Christopher J. Green, Isaya Maana, Samuel Tiriongo, Kethi Ngoka-Kisinguh Murinde: University of Birmingham Bai: University of Nottingham Green: Loughborough University Maana: Central Bank of Kenya Tiriongo: Central Bank of Kenya Ngoka-Kisinguh: Central Bank of Kenya We acknowledge financial support by the Kenyan Ministry of Finance and the Central Bank of Kenya under contract Kenya/SPN/FS/CBK/05/2010-11 and without implication, research funding from DFID and ESRC under the DEGRP Call 3, Research Grant No. ES/NO13344/1.
Research focus • The peer monitoring implication of the participating banks in the Kenya interbank market 2. Research Motivations • Lessons learnt from the 2007/08 financial crisis • Necessary but insufficient government discipline • Renewed interest in market discipline • However, ineffective private monitoring due to… • deposit insurance could weaken market discipline (Demirguc-Kunt and Detragiache, 2002) • Hence another possible market discipline candidate: interbank market
Continue… • The interbank market: where individual banks transact with one another to meet their demand for and supply of short term funds. • Interbank Market discipline: large, collateralized interbank loans … credit risk … motivated to monitor … amounts to a market peer monitoring mechanism • 2) The dark side of interbank market: contagion • interbank market: unsecured, based on lines of credit, the network of lending relationships • direct credit exposures…network…domino effects
Continue… 3) Research gap in emerging economies’ interbank market • ‘One size fits all’ type of official bank regulation…side-stepped (Murinde, 2010) • Kenya banking sector: exemplary • most developed in Africa • credited for its size and diversification • e.g. private credit to GDP in Kenya was 23.7% in 2008 vs. a median of 12.3% for Sub-Saharan Africa(Beck, Demirguc-Kunt and Levine, 2009) • but largely bank-based with shallow capital market(Ngugi et al, 2006) • entrenched interbank market (Green, et al., 2017)
3. Data and key variables • 43 banks participating in Kenya interbank • between 2003Q1 and 2011Q1
Continue… • Bank risks: the ratio of net charge-offs to equity in log form (lognco)Dinger and Von Hagen (2009) • the interbank exposure measurements: • the ratio of interbank liabilities to total assets (ibl_ta) • the ratio of interbank assets to total assets (nia_ta) • Important to consider interbank borrowing and lending separately (Huang and Ratnovski, 2009)…funding risk of equal importance
4. Empirical results • Both interbank liability and asset positions are reversely linked with bank risk - support the ‘peer monitoring’ hypothesis • However, if the interbank borrowing and lending position reaches a threshold, the impact reverses from risk reducing to risk increasing
Continue… • Size matters • Larger banks are exposed to smaller risks. • however such advantage reverse to a disadvantage when its size reaches certain threshold.
Continue… • As expected larger, foreign, listed and older banks are less risky. • When they are the borrowers, the risk reduction effect due to interbank peer monitoring becomes smaller. • The usual bank risk determinants: capitalization, credit risk, liquid liability, managerial efficiency and macroeconomic variables can also be applied to Kenya banks.
5. Public policy implications • The interbank market in Kenya provides a mechanism for peer monitoring and discipline • Complements the regulatory oversight of the central bank and the usual private monitoring candidates • Provides market signals to identify risky banks • During the further transition to Basel III, Kenya should consider the option of exploiting interbank market discipline as a complementary regulatory tool
Continue… • Empirical evidence support the role of capital adequacy • However, we do not recommend an over-reliance of capital adequacy ratio as a regulatory device • official regulators have important roles to play…monitoring the contagion risk…overly connected interbank network • Not only exemplary implications for the East African regional block • But also for other countries at a relatively early stage of financial development