UPDATE 1-Speculators trim US dollar shorts-CFTC

 (Adds details, quote, table)

 NEW YORK, Dec 27 (Reuters) - Currency speculators decreased
their bets against the U.S. dollar in the latest week, data
from the Commodity Futures Trading Commission showed on
Monday.

 The value of the dollar's net short position fell to $8.97
billion in the week ending Dec. 21, from $9.46 billion the
previous week, according to Reuters and CFTC calculations.

 Speculators boosted their short euro positions in the
latest week and increased bets in favor of the Swiss franc.

 The Swiss currency has soared in recent weeks, hitting a
record high versus the euro EURCHF=EBS on Wednesday as the
euro zone debt crisis enhanced the safe-haven allure of the
franc.

 Bets against sterling fell in the latest week.

 Among commodity-linked currencies, speculators increased
their long positions in the Australian dollar but trimmed bets
in favor of the Canadian currency.

 The Reuters calculation for the aggregate U.S. dollar
position is derived from the net positions of International
Monetary Market speculators in the yen, euro, British pound,
Swiss franc, Canadian and Australian dollars.

 JAPANESE YEN (Contracts of 12,500,000 yen)

          12/21/10 week         12/14/10 week

Long          34,243               34,996

Short         21,714               22,261

Net           12,529               12,735

 EURO (Contracts of 125,000 euros)

          12/21/10 week         12/14/10 week

Long          38,604               35,689

Short         52,697               45,993

Net          -14,093              -10,304

 POUND STERLING (Contracts of 62,500 pounds sterling)

          12/21/10 week         12/14/10 week

Long          14,579               12,205

Short         22,011               20,391

Net           -7,432               -8,186

 SWISS FRANC (Contracts of 125,000 Swiss francs)

          12/21/10 week         12/14/10 week

Long          25,365               20,794

Short         12,838               10,078

Net           12,527               10,716

 CANADIAN DOLLAR (Contracts of 100,000 Canadian dollars)

          12/21/10 week         12/14/10 week

Long          39,665               44,840

Short         14,717               11,444

Net           24,948               33,396

 AUSTRALIAN DOLLAR (Contracts of 100,000 Aussie dollars)

          12/21/10 week         12/14/10 week

Long          69,875               62,670

Short          9,325                8,892

Net           60,550               53,778

 MEXICAN PESO (Contracts of 500,000 pesos)

          12/21/10 week         12/14/10 week

Long          89,066               87,694

Short         11,064               10,526

Net           78,002               77,168

 NEW ZEALAND DOLLAR (Contracts of 100,000 New Zealand
dollars)

          12/21/10 week         12/14/10 week

Long          17,780               21,314

Short         10,414                8,793

Net            7,366               12,521
 (Reporting by Wanfeng Zhou; Editing by Dan Grebler)