BUZZ-COMMENT-Doubts creep in about the U.S. dollar

Jan 27 (Reuters) - Speculative longs were recently trimmed as some doubts crept in about the potential for the U.S. dollar uptrend to remain intact as the fundamental outlook was mixed and a negative development had etched on the daily chart.

The speculative long position - derived from net contracts of International Monetary Market speculators in the euro, yen, pound, Swiss franc, Canadian and Australian dollars - fell last week. For the week ending Jan. 21, the value of net positions held by speculators slipped to $30.73 billion long from $31.83 billion a week earlier.

The dollar firmed on Monday as traders pondered the ramifications of U.S. President Donald Trump's tariff plans at the start of a week in which the Federal Reserve is widely expected to hold interest rates steady.

However the USD index, which tracks the greenback against a basket of six major currencies, last week broke and closed under the 107.805 Fibo, a 23.6% retrace of the 100.150 to 110.170 (September to January). That could be an early sign that the dollar could be set for an even bigger setback in the days and weeks ahead.

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