▁ ▁Dou bles : ▁ 2 2 ▁( 1 3 – 9 ) ▁ ▁References ▁ ▁External ▁links ▁▁▁▁▁ ▁Category : 1 9 7 3 ▁birth s ▁Category : L iving ▁people ▁Category : J apan ese ▁female ▁tennis ▁players <0x0A> </s> ▁Trad E lect ▁was ▁the ▁London ▁Stock ▁Exchange ' s ▁main ▁electronic ▁trad ing ▁platform ▁from ▁ 2 0 0 7 ▁to ▁ 2 0 1 1 . ▁It ▁ran ▁on ▁Microsoft ▁Windows , ▁using ▁. NET ▁technology ▁and ▁Microsoft ▁SQL ▁Server . ▁Its ▁development ▁took ▁four ▁years ▁from ▁project ▁in ception ▁to ▁roll out ▁and ▁had ▁a ▁total ▁cost ▁of ▁£ 4 0   mill ion . ▁ ▁The ▁imp et us ▁for ▁the ▁development ▁of ▁Trad E lect ▁was ▁the ▁rise ▁of ▁algorithm ic ▁trad ing ▁and ▁the ▁liberal isation ▁of ▁the ▁trad ing ▁sector ▁in ▁Europe ▁due ▁to ▁the ▁Mark ets ▁in ▁Fin an cial ▁Inst ru ments ▁Direct ive . ▁Both ▁of ▁these ▁factors ▁meant ▁that ▁stock ▁ex changes ▁– ▁previously ▁facing ▁little ▁or ▁no ▁competition ▁– ▁had ▁to ▁offer ▁faster ▁response ▁times ▁to ▁be ▁compet itive . ▁The ▁system ▁which ▁Trad E lect ▁replaced , ▁S ets , ▁was ▁ 1 0 ▁years ▁old ▁and ▁took ▁ 1 4 0   ms ▁to ▁complete ▁a ▁trade , ▁compared ▁to ▁Trad E lect ' s ▁ 1 0   ms . ▁ ▁In ▁April ▁ 2 0 1 0 ▁the ▁Os lo ▁Stock ▁Exchange ▁also ▁adopted ▁Trad E lect , ▁as ▁part ▁of ▁a ▁strateg ic ▁partners