Rare earth metal stocks were among the hottest investment themes earlier this year, only to fade from the spotlight in recent months. Now, just as the sector has slipped out of the investor zeitgeist, prices have staged a decisive technical breakout. The timing is notable: momentum has accelerated during what is typically the quietest two-week stretch of the year, suggesting renewed accumulation beneath the surface.What initially caught my attention was the VanEck Rare Earth and Strategic Metals ETF ((REMX) ...