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És a dir, l'augment de l'oferta monetària, en comptes d'anar acompanyat d'un augment del crèdit al sector privat, s'ha usat, sobretot, per finançar el sector públic, directament, a través de la compra de bons sobirans per part del BCE, o indirectament, mitjançant la liquiditat de les subhastes LTRO que molts bancs han utilitzat per invertir en deute públic.
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Historically the trend in private sector credit and money supply has been very similar, which seems reasonable given that these are, respectively, the two biggest items in the assets and liabilities on financial institutions' balance sheets. This relationship has weakened, however, since unconventional expansionary measures began to be implemented. As balance sheets always tally, to explain the increase in the money supply (liabilities) without any growth in bank credit to the private sector (assets), we must explore the trends in the rest of the items on banks' balance sheets. Two situations can be observed. The first consists of a change in the proportion of public sector financing compared with the private sector on the balance sheets of financial institutions. In other words, instead of the larger money supply being accompanied by an increase in private sector credit, it has especially been used to finance the public sector, either directly by the ECB buying government bonds or indirectly via the liquidity of LTRO used by many banks to invest in public debt. Moreover, during times of greater uncertainty, banks had to increase the proportion of liquid assets on their balance sheets, such as central bank reserves, and therefore had fewer resources available to grant credit.
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