The world’s wealthiest family has routinely kept their investments undisclosed—until now, says an article in Financial Advisor. The Walton Family, founders of the Walmart retail empire, revealed that it held almost $5 billion in equities at the end of June through its Walmart Investment Team, LLC (WIT).

WIT is an affiliate that invests on behalf of the family and began disclosing its holdings only this year. Most of the investments are in low-cost ETFs, but they also hold stakes in the likes of Apollo Global Management Inc, Snowflake Inc., and the Chinese company Pinduoduo Inc.

The Waltons are worth $238 billion, the article continues, and recently the family has been increasingly more open about their investments and philanthropic pursuits. The family owns an unusually large stake in their public company, but a spate of stock buybacks has spurred them to sell shares in order to maintain stability of their ownership. Since the start of 2020, the family has sold about $6.5 billion in company stock, flooding the family office and the Walton Family Foundation with cash and the need for a more sophisticated investing plan.

The SEC requires investors handling more than $100 million in U.S. equities to disclose their holdings, and family office disclosures have become a hot-button issue in D.C. in the aftermath of the Archegos Capital Management, when a personal investment vehicle for Bill Hwang never reported its billions of dollars in stocks.