The Pakistan Stock Exchange (PSX) experienced a sharp decline on Thursday, with shares plummeting by nearly 2,000 points.Rising security concerns and worsening relations with Afghanistan contributed to the market downturn.Bearish momentum was also influenced by rising leverage, ending December contracts, and a depreciating currency.Investors are advised to focus on sectors such as E&P, Fertilizer, Cement, OMCs, Autos, Textile, and Technology.