The claim is strongly supported by the Redfin source, which explicitly states that the top 1% hold $6.1 trillion in U.S. real estate wealth and the 80th-99th income percentile holds $21 trillion; together these groups make up the top 20% and account for 56.4% of U.S. real estate wealth in Redfin's analysis. The Yahoo Finance/Business Wire page independently restates the same figures and attribution. While the specific X post was not directly retrievable, the substantive claim matches the validated Redfin report.