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TEPCO's five-year credit default swaps fell 61 basis points from Monday's close to 245 bps, according to Markit. The CDS reached a record high of 373 bps on March 17, as engineers struggled to salvage the Fukushima plant following a giant earthquake and tsunami.
Japan's five-year CDS fell 7 bps on Tuesday to 100 bps. The CDS hit record highs above 120 bps last week.