(Adds table, details on euro, yen contracts)
Aug 28 (Reuters) - Speculators pared back bullish bets on the U.S. dollar in the latest week to their smallest in more than two months, according to Reuters calculations and data from the Commodity Futures Trading Commission released on Friday.
The value of the dollar's net long position fell to $23.99 billion in the week ended Aug. 25, from $32.26 billion the previous week. This was the first time in four weeks that net dollar longs came in below $30 billion.
To be long a currency is to make a bet it will rise, while being short is a bet its value will decline.
Concerns about global equity weakness and China's deepening slowdown convinced speculators that the Federal Reserve would delay raising interest rates. That prompted a sell-off in the dollar the last two weeks.
At the same time, investors bought back the euro and yen, as they unwound carry trades, or bets in high-yielding assets, funded in both low-interest rate currencies.
As a result, net euro short contracts dropped to 66,078 in the latest week, from 92,732 previously. This week's net euro shorts were the smallest in more than a year.
Net short yen contracts also fell to 39,059, from 90,130 the previous week. That was the lowest net shorts since mid-May.
The Reuters calculation for the aggregate U.S. dollar position is derived from net positions of International Monetary Market speculators in the yen, euro, British pound, Swiss franc and Canadian and Australian dollars.
YEN (Contracts of 12,500,000 yen)
Aug. 25, 2015
Prior week
week
Long
59,922
45,935 Short
98,981
136,065 Net
-39,059
-90,130 EURO (Contracts of 125,000 euros)
Aug. 25, 2015
Prior week
week
Long
87,807
68,473 Short
153,885
161,205 Net
-66,078
-92,732 POUND STERLING (Contracts of 62,500 pounds sterling)
Aug. 25, 2015
Prior week
week
Long
58,051
52,030 Short
54,752
56,001 Net
3,299
-3,971 SWISS FRANC (Contracts of 125,000 Swiss francs)
Aug. 25, 2015
Prior week
week
Long
4,889
8,183 Short
17,486
18,051 Net
-12,597
-9,868 CANADIAN DOLLAR (Contracts of 100,000 Canadian dollars)
Aug. 25, 2015
Prior week
week
Long
29,555
21,407 Short
89,267
88,201 Net
-59,712
-66,794 AUSTRALIAN DOLLAR (Contracts of 100,000 Aussie dollars)
Aug. 25, 2015
Prior week
week
Long
47,275
47,544 Short
111,002
97,427 Net
-63,727
-49,883 MEXICO PESO (Contracts of 500,000 pesos)
Aug. 25, 2015
Prior week
week
Long
20,401
24,629 Short
103,454
85,056 Net
-83,053
-60,427 NEW ZEALAND DOLLAR (Contracts of 100,000 NZ dollars)
Aug. 25, 2015
Prior week
week
Long
15,388
14,012 Short
21,451
23,969 Net
-6,063
-9,957