Japanese Investors Return to Overseas Real Estate With Lessons Learned From the 1990s

TOKYO—Big Japanese investors stumbled disastrously into the U.S. commercial real-estate market in the late 1980s, when they bought high-profile properties like New York’s Rockefeller Center not long before the market fell hard.

Now some Japanese institutional investors and real-estate companies are back—but this time it isn’t about flaunting trophy purchases. It is about diversifying portfolios for the long term and getting good bargains while the market is slumping.