(Updates details and data, changes byline and dateline, previous LONDON)
* Dollar index gains
* Yen rally halted, USD/JPY falls past 106 mark
By Caroline Valetkevitch
NEW YORK, Aug 3 (Reuters) - The dollar was up against a basket of currencies on Monday as investors unwound some recent short positions following the currency's weakest monthly performance in a decade.
The dollar index =USD , which measures the greenback against a basket of leading currencies, posted a more than 4% decline for July, its biggest monthly drop since September 2010.
The weakness has been tied to market expectations for further easing of U.S. monetary policy, and a lack of agreement among U.S. lawmakers on further fiscal stimulus. Falling U.S. bond yields have also been cited as a factor.
The day's gains may be tied to investors partially moving out of the crowded short position, strategists said.
"Sentiment was overdone," said Marc Chandler, chief market strategist at Bannockburn Global Forex. "The swing in the pendulum of market sentiment hit such an extreme," which allowed for some unwinding of those short positions, he said.
"I don't expect it to last long," he added.
The dollar pared gains following weaker-than-expected U.S. economic data. U.S. construction spending fell to a one-year low in June; economists had forecast an increase. dollar index was last up 0.5% =USD at 93.836.
Speculators' net shorts on the U.S. dollar have soared to their highest since August 2011 at $24.27 billion, Reuters calculations and U.S. Commodity Futures Trading Commission data show. IMM/FX
Against the Japanese yen, the dollar gained 0.4% to push past the 106-yen-per dollar mark. JPY=
On Friday, the dollar posted its biggest daily rise against the Japanese currency since March, halting a rally in the yen which saw it gain 3% in July.
Japanese Finance Minister Taro Aso described the yen's recent rise as "rapid" on Friday, signaling concern that a strong currency could do more damage to an export-led economy already in recession. growing U.S. fiscal deficit to finance the stimulus prompted Fitch Ratings to revise its outlook on the United States' triple-A rating to negative from stable. on the euro has improved after European Union leaders agreed last month to a 750 billion euro ($882 billion) economic recovery fund while also taking on debt jointly in a show of regional cooperation.
The single currency last traded at $1.1727 EUR=EBS , down 0.4%. It hit a two-year high of $1.1908 reached last week.
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Currency bid prices at 10:47AM (1447 GMT) Description
RIC
Last
U.S. Close Pct Change
YTD Pct
High Bid
Low Bid
Previous
Change
Session
Euro/Dollar
EUR=
$1.1727
$1.1774
-0.40%
+4.62%
+1.1796
+1.1698 Dollar/Yen
JPY=
106.3000
105.8800
+0.40%
-2.35%
+106.4600 +105.5900 Euro/Yen
EURJPY=
124.69
124.68
+0.01%
+2.25%
+125.0600 +124.0200 Dollar/Swiss
CHF=
0.9237
0.9127
+1.21%
+0.00%
+0.9240
+0.9115 Sterling/Dollar GBP=
1.3012
1.3088
-0.58%
+0.00%
+1.3111
+1.3006 Dollar/Canadian CAD=
1.3419
1.3413
+0.04%
+3.33%
+1.3450
+1.3390 Australian/Doll AUD=
0.7087
0.7142
-0.77%
+0.94%
+0.7149
+0.7077 ar
Euro/Swiss
EURCHF=
1.0834
1.0755
+0.73%
+0.00%
+1.0838
+1.0754 Euro/Sterling
EURGBP=
0.9011
0.8995
+0.18%
+0.00%
+0.9014
+0.8983 NZ
NZD=
0.6579
0.6632
-0.80%
+0.00%
+0.6642
+0.6576 Dollar/Dollar
Dollar/Norway
9.1553
9.0860
+0.76%
+0.00%
+9.1763
+9.0729 Euro/Norway
EURNOK=
10.7394
10.7416
-0.02%
+0.00%
+10.7861
+10.6923 Dollar/Sweden
SEK=
8.7827
8.7680
-0.43%
+0.00%
+8.8083
+8.7556 Euro/Sweden
EURSEK=
10.3003
10.3450
-0.43%
+0.00%
+10.3515
+10.2885
<^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ GRAPHIC: Dollar's worst monthly performance in a decade
https://tmsnrt.rs/3k28ghc GRAPHIC: World FX rates in 2020
https://tmsnrt.rs/2RBWI5E
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^>