technology risk, operational risk, merger, synergy, synergy risk, reputational risk, fraud risk, hacker risk, financial terrorism, event risk, trading, trading portfolio, trading risk, investment portfolio, banking portfolio, credit risk, debt default, sovereign risk, country risk, debt moratorium, expropriation, expropriation risk, taxation risk, regulatory risk, liquidity risk, market depth, thin market, illiquid market, fire-sale, insolvency risk, macroeconomic risk, inflation risk,