BREAKING: $BRUN will be added to the Russell 3000 effective 21st September, Monday. What does this mean? The Float Calculation: Passive index buying is based on a company's float aka the shares actually available for public trading, excluding those owned by insiders. BRUN currently has a free float of roughly 27.5 million shares out of its approximately 79.5 million total outstanding shares. The 10% to 15% Rule: Across all the mutual funds and ETFs that strictly mirror the Russell 2000 (such as the massive iShares Russell 2000 ETF), passive index managers collectively end up owning roughly 10% to 15% of a typical constituent's float. The Estimate: This means index funds will collectively need to sweep up an estimated 2.7 million to 4.1 million shares of BRUN to meet their required weightings. Given that BRUN's average daily trading volume is around 2 million shares, this forced buying will likely trigger a massive, highly visible volume spike right at Friday's closing bell, 18 Sep 2026. This is super bullish (at least in the short term).