EMERGING MARKETS-Mexican peso leads Latam FX losses as Texas freeze spills over

    * Chile's peso the sole Latam gainer
    * Mexico seeks natural gas supply guarantee after Texas
export ban
    * Brazil's real dips on full day of trading after long

 (Adds details, updates prices)
    By Susan Mathew and Ambar Warrick
    Feb 18 (Reuters) - Mexico's peso led losses across Latin
American currencies on Thursday as a prolonged energy freeze in
the U.S. state of  Texas disrupted activity across the border,
while higher U.S. yields pressured risk-driven assets. 
    The peso lost 0.8% as the shutdowns in the United
State's largest energy producing state due to poor weather
affected power generation in Mexico.
    The Mexican government pressed for natural gas supplies
after Texas implemented a ban on exports. 
    "In addition to concerns about an unusually strong winter in
some parts of the country and its effect on the economic
recovery process, the debate about as to whether and if so to
what extent monetary policy will be eased further will be
affecting the (Mexican) peso most," said Elisabeth Andreae, FX
analyst at Commerzbank.
    "Following the appointment of a new board member the
uncertainty about this matter is particularly high, as it is
unclear to what extent Banxico will deviate from its current
    A rise in U.S. treasury yields drove flows out of
risk-driven assets, as more investors bet on increased fiscal
spending and debt issuance to fish the economy out of a
pandemic-induced slump.
    The U.S. Labor Department's report showed initial claims for
state unemployment benefits rose over the prior week, denting
hopes of a steady economic recovery and furthering the case for
more stimulus.
    Brazil's real fell on its first day of full trading
after an extended weekend, extending losses after a slide on
Wednesday when it traded for half a day. 
    Chile's peso rose slightly to a more-than six-week
peak, taking some support from copper prices hitting a nine-year
high. Chile is the world's top producer of the red metal.
    As has been the case since the pandemic began about a year
ago, losses in Latam assets were much larger than their broader
emerging market peers, as investors perceived the region's
economies as much more fragile.
    Latam stocks tumbled, with the MSCI's index of equities
 set for its worst day in three weeks. 
    Brazilian stocks shed 1.3% as broad-based losses
offset gains in commodity stocks.
    Shares in Carrefour Brasil rose 1% after it said
it is "optimistic" about margins and as its French parent
 posted solid full-year results and announced further
cost cutting and cash flow targets. 
    Key Latin American stock indexes and currencies:
                              Latest     Daily % change
 MSCI Emerging Markets         1425.17             -1.37
 MSCI LatAm                    2386.05             -1.24
 Brazil Bovespa              118763.31             -1.32
 Mexico IPC                   44714.76             -0.77
 Chile IPSA                    4523.43             -0.78
 Argentina MerVal             51838.34            -1.047
 Colombia COLCAP               1361.02             -0.39 Currencies             Latest     Daily % change
 Brazil real                    5.4369             -0.41
 Mexico peso                   20.3625             -0.76
 Chile peso                      711.7              0.21
 Colombia peso                  3545.5             -0.56
 Peru sol                       3.6507              0.00
 Argentina peso                89.0500             -0.11
 (Reporting by Susan Mathew in Bengaluru; Editing by Andrea
Ricci and Alistair Bell)