The assessment is based on a strong chain of evidence from highly authoritative and relevant sources. The primary sources from Bank of America Global Research are identified as the most credible and likely place to find this specific data point. While the links provided are to the main portal and not the specific report containing the data, a highly credible secondary source, Yahoo Finance, explicitly cites a "BofA's weekly flow show note" as its source for fund flow information. This direct attribution from a reputable financial news outlet to the most authoritative source on the matter provides strong corroboration for the statement. The other sources are either not relevant to the specific claim about US equity inflows (e.g., the ECB report focuses on European outflows, and others are about credit markets or are biographies) or do not contain any specific data. There is no conflicting evidence presented. The confidence level is high because the evidence consistently points to the statement's validity through a clear and credible sourcing trail, with the only minor uncertainty being the lack of the original BofA report itself for direct verification.