Stock Market Update

[BRIEFING.COM] The S&P 500 (-0.08%) is in second place on Friday afternoon, down just 5 points.

Briefly, S&P 500 constituents Molina Healthcare (MOH 188.73, -15.52, -7.60%), West Pharm (WST 207.74, -13.85, -6.25%), and Waters (WAT 286.23, -10.69, -3.60%) dot the bottom of the standings. MOH slides as reports of rising drug denial rates and looming ACA premium hikes sparked concerns about regulatory scrutiny and mounting cost pressures for government-focused insurers, while WST and WAT fall despite a dearth of corporate news.

Meanwhile, Invesco (IVZ 19.76, +2.48, +14.35%) is today's top gain getter, jumping after proposing a structural overhaul of its flagship QQQ ETF that could unlock hundreds of millions in annual profits by converting it from a unit investment trust to an open-ended fund.