It's going to take more than a seismic earthquake and a nuclear meltdown to dampen these investors. Japan-focused equity exchange-traded funds hauled in an estimated $1.2 billion in the week after disaster hit Japan on March 11, the heaviest weekly inflow on record, according to new data from TrimTabs.

A week after the earthquake and tsunamis shook the country, Japan equity ETFs hauled in an estimated $700 million on March 16, the heaviest one-day inflow on record and twice as large as the previous one-day record in 2003.

The New York Times also covered TrimTab's latest data. 

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