Historical precedent shows that clusters of 13+ Hindenburg Omen signals within three months have typically preceded meaningful market pullbacks and increased volatility

"The first occurred in January 1980. Over the following year, the index declined 13.4%, while the maximum drawdown reached 14.8%. The second instance appeared in September 2018. Although the market initially remained resilient, the S&P 500 posted a maximum drawdown of 13.1% during the subsequent year."