NEW YORK (Karvy) -- Here are the winners and losers among emerging-market stocks the past week.

China: Winners and Losers

Qiao Xing Mobile Communication ( QXM) emerged a major gainer last week, adding 30%. Parent company Qiao Xing Universal Resources ( XING) revealed that its board has authorized the purchase QXM's outstanding shares in exchange for 1.9 shares of XING's common stock plus 80 cents in cash for each minority share. AsiaInfo-Linkage ( ASIA) gained 16.8% on surging volumes. Zacks Investment Research reaffirmed a neutral rating on the stock.

The9 ( NCTY) zoomed higher by 16.5%. The company has established a $100 million fund to finance mobile game development, focusing on investments in both Chinese and external developers. The fund has been formed in partnership with three China-based investment firms. Sinopec Shanghai Petrochemical ( SHI) jumped 16.2%.

China Housing & Land Development ( CHLN) climbed 15.3% after Zacks included the stock in its four powerful "buy" stocks. The research firm upgraded CHLN to outperform from an earlier rating of neutral. China Nepstar Chain Drugstore ( NPD) notched up a 14.9% gain, benefiting from rising volumes.

China Architectural Engineering ( CAEID) was the major loser, plunging 75%. China Green Agriculture ( CGA) plummeted 18.6% after J Capital Research published a research report stating that the stock is worth less than a third of its price. Further, the report adds that the company has overstated its actual earnings and revenue. The report refuted the company's claim that it makes humic acid through a valuable proprietary process, instead saying that CGA uses an easily replicable process.

China Natural Resources ( CHNR) and New Oriental Energy & Chemical ( NOEC) fell 13.4% and 9.4%, respectively.

Major agriculture stocks like Zhongpin ( HOGS) and AgFeed ( FEED) declined 6.9% and 5.1%, respectively.

India: Winners and Losers

Syntel ( SYNT) topped the gainers' list last week, accumulating 13.3% after William Blair upgraded the stock to outperform from market perform. Meanwhile, Deutsche Bank raised its rating on Syntel to buy from hold, adding a further 15% upside. The bank expects Syntel to announce strong fourth-quarter results. ( REDF) held on to its second position, increasing 5.3% on unusually high trading volume.

Cognizant Technology Solutions ( CTSH) rose 2.5%. Last week, UBS raised the company's price target to $86 from $71. Sify Technologies ( SIFY) rose 2.2%. The company is currently is reworking its travel business model SifyTripz.

ICICI Bank ( IBN) was the top loser past week, dropping 9.6%. The bank raised its base rate, or minimum lending rate by almost 75 basis points and its benchmark-prime lending rate by 0.25% last week. The rate hike will render corporate and consumer loans, including homes and auto loans, more expensive.

HDFC Bank ( HDB) lost 8.3% last week on concerns over interest rate hikes by the Reserve Bank of India. India's central bank raised interest rates on fixed deposits by almost 125 basis points, with varied maturities. Tata Motors ( TTM) declined 7.9% after announcing price increases for commercial and passenger vehicles.

Sterlite Industries ( SLT - Get Report) dropped 6.1% last week. However, Zacks reaffirmed its outperform rating on the stock after the company's subsidiary Hindustan Zinc announced a 150-megawatt expansion in wind power generation capacity. Patni Computers ( PTI - Get Report) lost 3%. The company is scheduled to sign the iGate ( IGTE)-Apax deal for selling its 63% controlling stake for a little less than $1 billion. Meanwhile, iGate dipped 2.8% last week.

Brazil: Winners and Losers

Companhia Siderurgica Nacional ( SID) topped the gainers' list, up 5%. The stock was included in our picks for emerging-market mining stocks with upside. Brasil Telecom ( BTM) followed, jumping 4.5%. Tele Norte Leste Participacoes ( TNE), another telecom service provider, rose 4.1%.

Vivo Participacoe ( VIV) rose 4.4% last week after Barclays Capital upgraded the stock to overweight from equal weight with a potential upside of 9%. Gerdau ( GGB) and Companhia Energetica Minas Gerais (CEMIG) ( CIG) advanced 3.4% and 2.5%, respectively.

Gol Linhas Aereas Inteligentes ( GOL) rose 1.8% last week after announcing 4.5% year-over-year demand growth during December with a load factor of 72.5%. The company has signed a code-sharing agreement with Qatar Airways for all GOL flights departing from Sao Paulo to 48 Brazilian destinations. For 2011, the airline estimates a 10% to 15% increase in total air traffic, especially on high demand routes.

Petroleo Brasileiro ( PBR - Get Report), an integrated oil and gas company, topped the losers' list last week, down 4.3%. Petrobras is offering $4.69 billion for completely acquiring Italian major Eni's stake in Galp Energia. However, Brazilian analysts believe that such a deal would clearly indicate a shift in Petrobras' business strategy slated for 2010-2014 and could impact the company's performance adversely. Last week, Petrobras was cut to neutral at Goldman.

Gafisa ( GFA) slipped 3.9%. Zacks reaffirmed a neutral rating on the stock. Companhia Brasileira De Distribuicao ( CBD) and Itaú Unibanco Holding ( ITUB) shed 3.8% each.

This commentary comes from an independent investor or market observer as part of TheStreet guest contributor program. The views expressed are those of the author and do not necessarily represent the views of TheStreet or its management.