A measure of exchange-rate swings in emerging-market currencies halted a three-week decline, highlighting the fragility of an oil-induced rally amid lingering concern about the health of the global economy. While developing-nation stocks and currencies rose this week as Brent crude extended the month’s advance to 13 percent, those gains were a far cry from last week’s best five days since October. With commodities and China continuing to dictate the outlook for markets, factory production and foreign direct investment data are forecast to provide further evidence of a slowdown in the world’s second-largest economy. China strengthened the yuan’s fixing on Friday by the most since November, spurring a surge in the onshore currency and putting more pressure on exports after February’s biggest contraction in seven years. The European Central Bank’s monetary easing will encourage inflows to higher-yielding assets, but emerging-market currencies are unlikely to stabilize because China is slowing and […]