Argentine stocks, bonds extend gains, peso weaker
BUENOS AIRES May 20 (Reuters) - Argentina's stock, currency and bond market trends on Wednesday.
* The MerVal stocks index .MERV rose for a third session, climbing 1.09 percent to 1,550.15 points but trimming earlier gains as profit-taking saw Wall Street turn lower.
* The index is up 21.6 percent since May 1 and has risen 7.75 percent this week.
* Strong crude prices helped MerVal heavyweight Tenaris TENA.BA, which makes steel tubes for the global energy industry. It rose 2.2 percent to 55.2 pesos a share.
* On the broad stock market, volume was thin at $15.9 million. Of active issues, 41 advanced, 24 declined and 13 were unchanged.
* Prices for government bonds traded over-the-counter in Buenos Aires rose 2.5 percent on average, accumulating gains of 15 percent since the start of the month.
* The dollar-denominated Discount bond ARDISCD=RASL rose 4.6 percent, according to the ask price.
* In formal exchange between banks, the Argentine peso closed 0.07 percent weaker at 3.73/3.7325 per dollar ARS=RASL due to central bank dollar purchases aimed at gradually weakening the peso, traders said.
* In informal trade between foreign exchange houses, as measured by Reuters, the peso dipped 0.2 percent to end at 3.7925/3.7975 ARSB=. (Reporting by Jorge Otaola; Writing by Helen Popper)
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