The world’s biggest money managers and dozens of corporate chief executives will gather in Boston next week. No bankers allowed.

It is the first in a series of planned conferences where big shareholders can mingle directly with corporate management, cutting banks out of their lucrative role as Wall Street’s matchmakers. Investors with $9 trillion of assets will meet with CEOs of two dozen of America’s biggest companies, including Walmart Inc. and Coca-Cola Co., according to emails reviewed by The Wall Street Journal.

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