The regulation of per- and polyfluoroalkyl substances (“PFAS”) in drinking water remains one of the primary focuses for legislatures and agencies at both the state and federal levels. In April 2024, ...

The following chart from Avantis shows that concentration levels have increased dramatically in recent years, while the levels for the smaller-cap and value indexes have been relatively stable. Note ...

Arctic zone: 2.2 mg/kg Under 40 inch zone: 1.6 mg/kg Over 40 inch zone: 1.3 mg/kg Resident non-cancer hazard: .028 mg/kg Commercial/industrial non-cancer hazard: .37 mg/kg Construction worker ...

How can we assess concentration levels in a given index? A popular way to measure concentration levels in an index is by looking at the “effective” number of stocks in an index (also known as the ...

The winners-take-all effect of concentrated markets has reshaped the profile of global equity markets. At the end of 2025, the Magnificent Seven’s weight in the Morningstar Global Target Market ...

U.S. equity market concentration has increased sharply over the past decade as mega-cap companies have grown faster than the broader large cap universe. Measures such as the effective number of stocks ...

Invesco NASDAQ Next Gen 100 ETF has persistently lagged QQQ, primarily due to lower portfolio concentration, not inferior stock selection. QQQJ's diversified, capped weighting reduces idiosyncratic ...