By Jorge Otaola and Walter Bianchi
BUENOS AIRES, May 23 (Reuters) - Argentina's central bank moved on Wednesday to improve its debt profile by offering to swap some of its one-month Lebac securities for paper of longer duration, the bank said in a statement.
If the swaps succeed in extending payments, which have obliged the bank to take a hard once-a-month blow to its reserves, the bond market may take the move as a needed financing improvement for a country ailing from high inflation and uncertainty about the stability of its peso currency.
"It's worthwhile to make a small effort to re-profile the Lebacs to avoid having such a high concentration of maturities in the short term," central bank chief Federico Sturzenegger said in an address to economists on Wednesday.
The central bank increased interest rates on its short-term Lebac securities to 40 percent from 26.3 percent in its monthly auction, last week. The monetary authority sold 620,930 billion pesos ($25.77 billion) in Lebacs, compared with the 615,877 billion pesos' worth of securities that matured.
The successful rollover of the Lebac notes was read by the markets as a much-needed sign of confidence in the financial system, sending the local Merval stock index higher.
The day of the rollover, May 15, has come to be known locally as "Super Tuesday" because it was seen as a turning point toward stability for local financial markets.
President Mauricio Macri recently made a conciliatory gesture toward bondholders by cutting Argentina's 2018 fiscal target to 2.7 percent of gross domestic product from 3.2 percent. His government is negotiating an International Monetary Fund 'exceptional access' standby deal.
Macri was elected in late 2015 on a pro-investment platform, but a recent flight from emerging markets hit Argentina particularly hard due to its weak fundamentals and high exposure to dollar-denominated indebtedness at a time of peso weakness.
The local currency has fallen 15.5 percent so far this month to 24.5 per U.S. dollar.
The central bank has jacked it key interest rate up to 40 percent, the highest monetary policy rate in the world, in a bid to keep the anemic peso from pushing inflation higher. Consumer prices were 25.5 percent higher on a 12 month basis in April. (Writing by Hugh Bronstein Editing by Tom Brown)