... “Financiallinkagesamongfirms and marketscouldheightenthisrisk.Derivativesclearlyhaveexpandedthefinanciallinkagesamongtheinstitutionsthatusethem and themarketsinwhichtheytrade.VariousstudiesoftheOctober1987 market crashshowedlinkagesbetweenmarketsforequities and theirderivatives.Accordingtothosestudies,pricesinthestock,options, and futuresmarketswererelated,sothatdisruptionsinonewereassociatedwithdisruptionsintheothers.”6. ... AstheGAOwarned,thefinanciallinkagesamongfirmshaveheightenedthisrisk.Moreover,asitexplainedwithitsreferencetothe1987stock market crash,theselinkageshavebecomeespeciallycriticalinthewakeofrecent market crashes—inboththeU.S.housing market and globalstockmarkets.6. AstheGAOwarned,theabruptfailureorwithdrawalfromtradingofoneofthelargedealershasunderminedthestabilityofseveralmarketssimultaneously,leadingtoachainof market withdrawals,firmfailures and systemiccrisis:We’veseensimultaneous and extremeinstability ... AstheGAOwarned,theabruptfailureorwithdrawalfromtradingofoneofthelargedealershasunderminedthestabilityofseveralmarketssimultaneously,leadingtoachainof market withdrawals,firmfailures and systemiccrisis:We’veseensimultaneous and extremeinstability inthemarketsformortgages,interbankloans,assetbackedsecurities(ABS),commercialpaper,corporatebonds and evenmoney market funds.7....