anchor.diff:  OMIP,OPERADOR DE MERCADO IBERICO DE ENERGIA - PORTUGAL,PT,PORTUGAL,LISBOA,OMIP,May 2007,Active
   OOTC,OTC BULLETIN BOARD - OTHER OTC,US,UNITED STATES OF AMERICA,WASHINGTON,OTCBB,June 2008,Active
   OPEX,PEX-PRIVATE EXCHANGE,PT,PORTUGAL,LISBOA,OPEX,June 2005,Active
  +OTCB,OTCQB MARKETPLACE,US,UNITED STATES OF AMERICA,NEW YORK,,May 2010,Active
   OTCQ,OTCQX,US,UNITED STATES OF AMERICA,NEW YORK,,August 2008,Active
   OTCX,OTC EXCHANGE OF INDIA,IN,INDIA,MUMBAI,OTCEI,June 2006,Active
  -PFTS,FIRST SECURITIES TRADING SYSTEM - UKRAINIAN OTC,UA,UKRAINE,KIEV,PFTS,June 2005,Active
  +PDEX,PHILIPPINE DEALING AND EXCHANGE CORP,PH,PHILIPPINES,MAKATI CITY,,May 2010,Active
  +PDQD,PDQ ATS DARK,US,UNITED STATES OF AMERICA,ILLINOIS,,May 2011,Active
  +PDQX,PDQ ATS,US,UNITED STATES OF AMERICA,ILLINOIS,,May 2011,Active
  +PFTQ,PFTS QUOTE DRIVEN,UA,UKRAINE,KIEV,,October 2010,Active
  +PFTS,PFTS STOCK EXCHANGE,UA,UKRAINE,KIEV,PFTS,May 2010,Active
   PIEU,PIPELINE - MTF,GB,UNITED KINGDOM,LONDON,,May 2009,Active
  -PINX,PINK SHEETS LLC (NQB),US,UNITED STATES OF AMERICA,NEW YORK, ,June 2005,Active
  +PINX,PINK OTC MARKETS INC. (NQB),US,UNITED STATES OF AMERICA,NEW YORK, ,November 2010,Active
   PIPE,PIPELINE,US,UNITED STATES OF AMERICA,NEW YORK, ,November 2006,Active
  -PLPX,TOWAROWA GIELDA ENERGII S.A. (POLISH POWER EXCHANGE),PL,POLAND,WARSAW,TGE,July 2007,Active
  +PIRM,PIRUM,GB,UNITED KINGDOM,LONDON,,July 2011,Active
  +PLDX,PLUS DERIVATIVES EXCHANGE,GB,UNITED KINGDOM,LONDON, ,June 2011,Active
  +PLPX,TOWAROWA GIELDA ENERGII S.A. (POLISH POWER EXCHANGE),PL,POLAND,WARSZAWA,,July 2007,Active
   PLUS,BOERSE MUENCHEN - FREIVERKHER - PLUS - EUROPE,DE,GERMANY,MUENCHEN,,April 2009,Active
  +POEE,POEE WARSAW STOCK EXCHANGE ENERGY MARKET,PL,POLAND,WARSZAWA, ,June 2011,Active
  +PRME,MTS PRIME,GB,UNITED KINGDOM,LONDON,,October 2011,Active
  +PRSE,PRAGMA ATS,US,UNITED STATES OF AMERICA,NEW YORK, ,December 2010,Active
   PSGM,PINK SHEETS GREY MARKET,US,UNITED STATES OF AMERICA,NEW YORK,,June 2008,Active
  +PULX,BLOCKCROSS ATS,US,UNITED STATES OF AMERICA,BOSTON,,November 2010,Active
   PURE,PURE TRADING,CA,CANADA,TORONTO, ,December 2006,Active
   PXIL,POWER EXCHANGE INDIA LTD.,IN,INDIA,MUMBAI,,July 2009,Active
   QMTF,QUOTE MTF,HU,HUNGARY,BUDAPEST,,December 2008,Active
  -QMTS,MTS QUASI GOVERNMENT,GB,UNITED KINGDOM,LONDON, ,November 2005,Active
   QWIX,Q-WIXX PLATFORM,GB,UNITED KINGDOM,LONDON, ,September 2007,Active
  +RBSX,RBS CROSS,GB,UNITED KINGDOM,LONDON, ,May 2011,Active
  +RICD,RIVERCROSS DARK,US,UNITED STATES OF AMERICA,NARBERTH,RIVERX,May 2011,Active
  +RICX,RIVERCROSS,US,UNITED STATES OF AMERICA,NARBERTH,,May 2011,Active
   RMTS,MTS ISRAEL,GB,UNITED KINGDOM,LONDON, ,August 2007,Active
   ROCO,GRETAI SECURITIES MARKET,TW,TAIWAN,TAIPEI, ,June 2005,Active
   ROFX,ROSARIO FUTURE EXCHANGE,AR,ARGENTINA,ROSARIO,ROFEX,October 2009,Active
   ROTC,RWANDA OTC MARKET,RW,RWANDA,KIGALI,,June 2008,Active
  -RPDX,ARENA,RU,RUSSIA,MOSCOW,,March 2010,Active
  -RPWC,CETO SECURITIES MARKET,PL,POLAND,WARSAW, ,October 2007,Active
  +RPDX,MOSCOW ENERGY EXCHANGE,RU,RUSSIA,MOSCOW,MEEX,May 2010,Active
  +RPWC,BONDSPOT REGULATED MARKET,PL,POLAND,WARSZAWA, ,April 2011,Active
  +RSEX,RWANDA STOCK EXCHANGE,RW,RWANDA,KIGALI,,August 2011,Active
   RTSL,REUTERS TRANSACTION SERVICES LIMITED,GB,UNITED KINGDOM,LONDON,RTSL,August 2007,Active
   RTSX,RUSSIAN TRADING SYSTEM STOCK EXCHANGE,RU,RUSSIA,MOSCOW,RTS,June 2005,Active
   SBIJ,JAPANNEXT PTS,JP,JAPAN,TOKYO,,April 2008,Active
   SBMF,SPOT REGULATED MARKET - BMFMS,RO,ROMANIA,SIBIU,,February 2010,Active
   SECF,SECFINEX,GB,UNITED KINGDOM,LONDON,,January 2009,Active
   SEDX,SECURITISED DERIVATIVES MARKET,IT,ITALY,MILANO,SeDeX,September 2007,Active
  +SELC,SISTEMA ESPECIAL DE LIQUIDACAO E CUSTODIA DE TITULOS PUBLICOS,BR,BRAZIL,RIO DE JANEIRO,,January 2011,Active
  +SEND,SEND - SISTEMA ELECTRONICO DE NEGOCIACION DE DEUDA,ES,SPAIN,MADRID, ,June 2010,Active
  +SEPE,STOCK EXCHANGE PERSPECTIVA,UA,UKRAINE,DNIPROPETROVSK,,May 2010,Active
   SGEX,SHANGHAI GOLD EXCHANGE,CN,CHINA,SHANGHAI,SGE,June 2006,Active
   SGMA,GOLDMAN SACH MTF,US,UNITED STATES OF AMERICA,NEW YORK,,March 2008,Active
   SGMX,SIGMA X MTF,GB,UNITED KINGDOM,LONDON,,February 2010,Active
  +SHAD,D.E. SHAW DARK,US,UNITED STATES OF AMERICA,NEW YORK,,May 2011,Active
   SHAR,SHAREMARK,GB,UNITED KINGDOM,AYLESBURY, ,September 2007,Active
  +SHAW,D.E. SHAW,US,UNITED STATES OF AMERICA,NEW YORK,,May 2011,Active
  +SIGX,SIGMA X CANADA,US,UNITED STATES OF AMERICA,BOSTON, ,July 2011,Active
   SMEX,SINGAPORE MERCANTILE EXCHANGE PTE LTD,SG,SINGAPORE,SINGAPORE,,December 2009,Active
  -SMTS,MTS SPAIN S.A.,ES,SPAIN,MADRID, ,November 2005,Active
  +SMTS,MTS SPAIN,GB,UNITED KINGDOM,LONDON, ,February 2011,Active
  +SPAD,SPAD TRADING,CZ,CZECH REPUBLIC ,PRAGUE,,May 2010,Active
   SPEC,SPECTRONLIVE,GB,UNITED KINGDOM,LONDON,,September 2007,Active
  +SPIM,ST. PETERSBURG INTERNATIONAL MERCANTILE EXCHANGE,RU,RUSSIA,SAINT-PETERSBURG,SPIMEX,March 2011,Active
   SPRZ,SPREADZERO,GB,UNITED KINGDOM,LONDON,,September 2009,Active
  -SSOB,SSO BONDVISION,IT,ITALY,ROMA, ,October 2007,Active
  +SSOB,BOND VISION CORPORATE,IT,ITALY,ROMA, ,May 2010,Active
   STUA,BOERSE STUTTGART - REGULIERTER MARKT,DE,GERMANY,STUTTGART,,February 2008,Active
   STUB,BOERSE STUTTGART - FREIVERKEHR,DE,GERMANY,STUTTGART,,February 2008,Active
   SWAP,SWAPSTREAM,GB,UNITED KINGDOM,LONDON,,September 2007,Active
   TBEN,TULLETT PREBON PLC - TULLET PREBON ENERGY,GB,UNITED KINGDOM,LONDON,,September 2007,Active
   TBLA,TULLETT PREBON PLC - TP TRADEBLADE,GB,UNITED KINGDOM,LONDON,,June 2008,Active
  +TBSP,TREASURY BONDSPOT POLAND,PL,POLAND,WARSZAWA,,July 2011,Active
   TCDS,TRADITION CDS,GB,UNITED KINGDOM,LONDON, ,August 2007,Active
   TFEX,THAILAND FUTURES EXCHANGE,TH,THAILAND,BANGKOK,TFEX,June 2006,Active
   TFSG,TFS GREEN SCREEN,GB,UNITED KINGDOM,LONDON, ,August 2007,Active
  
positive.code: MIC,INSTITUTION DESCRIPTION,CC,COUNTRY,CITY,ACR,DATE,STATUS
  360T,360T,DE,GERMANY,FRANKFURT, ,September 2007,Active
  AFET,AGRICULTURAL FUTURES EXCHANGE OF THAILAND,TH,THAILAND,BANGKOK,,January 2008,Active
  ALTX,ALTERNATIVE EXCHANGE,ZA,SOUTH AFRICA,JOHANNESBURG,ALTX,August 2006,Active
  ALXA,NYSE EURONEXT - ALTERNEXT AMSTERDAM,NL,THE NETHERLANDS,AMSTERDAM, ,August 2007,Active
  ALXB,NYSE EURONEXT - ALTERNEXT BRUSSELS,BE,BELGIUM,BRUSSELS, ,August 2007,Active
  ALXP,NYSE EURONEXT - ALTERNEXT PARIS,FR,FRANCE,PARIS, ,August 2007,Active
  AMTS,MTS AMSTERDAM N.V.,NL,THE NETHERLANDS,AMSTERDAM, ,November 2005,Active
  AMXO,NYSE AMEX OPTIONS,US,UNITED STATES OF AMERICA,NEW YORK,NYSE,November 2008,Active
  AQUA,AQUA EQUITIES L.P.,US,UNITED STATES OF AMERICA,NEW YORK,,September 2008,Active
  ARCO,NYSE ARCA OPTIONS,US,UNITED STATES OF AMERICA,NEW YORK,,October 2009,Active
  ARCX,NYSE ARCA,US,UNITED STATES OF AMERICA,NEW YORK,NYSE,September 2006,Active
  AWBX,AUSTRALIAN WHEAT BOARD,AU,AUSTRALIA,MELBOURNE,AWB,September 2006,Active
  AWEX,AUSTRALIAN WOOL EXCHANGE,AU,AUSTRALIA,LANE COVE,AWEX,September 2006,Active
  BACE,BUENOS AIRES CEREAL EXCHANGE,AR,ARGENTINA,BUENOS AIRES,,June 2008,Active
  BAIK,BAIKAL,GB,UNITED KINGDOM,LONDON,,August 2008,Active
  BALT,THE BALTIC EXCHANGE,GB,UNITED KINGDOM,LONDON,,November 2008,Active
  BAPX,BALTPOOL,LT,LITHUANIA,VILNIUS,,March 2010,Active
  BARX,BARCLAY'S ATS,US,UNITED STATES OF AMERICA,NEW YORK,,January 2010,Active
  BATE,BATS EUROPE,GB,UNITED KINGDOM,LONDON,,November 2008,Active
  BATO,BATS EXCHANGE OPTIONS MARKET,US,UNITED STATES OF AMERICA,NEW YORK,BATS,November 2009,Active
  BATS,BATS EXCHANGE,US,UNITED STATES OF AMERICA,NEW YORK,BATS,November 2008,Active
  BATY,BATS Y-EXCHANGE INC.,US,UNITED STATES OF AMERICA,NEW YORK,BATS,November 2009,Active
  BCFS,BOLSA DE COMERCIO DE SANTA FE,AR,ARGENTINA,SANTA FE,,November 2007,Active
  BCSE,BELARUS CURRENCY AND STOCK EXCHANGE,BY,BELARUS,MINSK,BCSE,August 2006,Active
  BEEX,BOND ELECTRONIC EXCHANGE,TH,THAILAND,BANGKOK,,November 2007,Active
  BERA,BOERSE BERLIN - REGULIERTER MARKT,DE,GERMANY,BERLIN,,February 2008,Active
  BERB,BOERSE BERLIN - FREIVERKHER,DE,GERMANY,BERLIN,,February 2008,Active
  BGCF,BGC FINANCIAL INC,US,UNITED STATES OF AMERICA,NEW YORK,,September 2007,Active
  BGCI,BGC BROKERS LP,GB,UNITED KINGDOM,LONDON, ,October 2007,Active
  BIDS,BIDS TRADING L.P.,US,UNITED STATES OF AMERICA,NEW YORK,BIDS,February 2007,Active
  
negative.code: TFSV,VOLBROKER,GB,UNITED KINGDOM,LONDON, ,August 2007,Active
  THRD,THIRD MARKET CORPORATION,US,UNITED STATES OF AMERICA,CHICAGO,eTHRD,June 2005,Active
  TMTS,EUROBENCHMARK TRES. BILLS,GB,UNITED KINGDOM,LONDON, ,November 2005,Active
  TMXS,TMX SELECT,CA,CANADA,TORONTO,,December 2010,Active
  TNLA,NYSE EURONEXT - TRADED BUT NOT LISTED AMSTERDAM,NL,THE NETHERLANDS,AMSTERDAM, ,August 2007,Active
  TNLB,NYSE EURONEXT - TRADING FACILITY BRUSSELS,BE,BELGIUM,BRUSSELS, ,August 2007,Active
  TOCP,TORA CROSSPOINT,HK,HONG KONG,HONG KONG,,April 2011,Active
  TOMD,TOM MTF DERIVATIVES MARKET,NL,THE NETHERLANDS,AMSTERDAM,,June 2011,Active
  TOMX,TOM MTF CASH MARKETS,NL,THE NETHERLANDS,AMSTERDAM,,June 2011,Active
  TPCD,TULLETT PREBON PLC - TP CREDITDEAL,GB,UNITED KINGDOM,LONDON,,June 2008,Active
  TPIE,THE PROPERTY INVESTMENT EXCHANGE,GB,UNITED KINGDOM,LONDON, ,October 2007,Active
  TPIM,THE PROPERTY INVESTMENT MARKET,GB,UNITED KINGDOM,LONDON, ,October 2007,Active
  TPRE,TULLETT PREBON PLC - TP REPO,GB,UNITED KINGDOM,LONDON,,June 2008,Active
  TPSD,TULLETT PREBON PLC - TP SWAPDEAL,GB,UNITED KINGDOM,LONDON,,April 2011,Active
  TRCK,TRACK ECN,US,UNITED STATES OF AMERICA,NEW YORK, ,December 2010,Active
  TRDE,TRADITION ELECTRONIC TRADING PLATFORM,GB,UNITED KINGDOM,LONDON, ,October 2010,Active
  TREU,TRADEWEB EUROPE LIMITED ,GB,UNITED KINGDOM,LONDON, ,June 2005,Active
  TRQD,TURQUOISE DERIVATIVES MARKET,GB,UNITED KINGDOM,LONDON, ,February 2011,Active
  TRQM,TURQUOISE DARK,GB,UNITED KINGDOM,LONDON,TQDARK,May 2011,Active
  TRQX,TURQUOISE,GB,UNITED KINGDOM,LONDON, ,September 2007,Active
  TRWB,TRADEWEB LLC,US,UNITED STATES OF AMERICA,JERSEY CITY, ,June 2005,Active
  TSXV,ALPHA ATS - TSX-V,CA,CANADA,TORONTO,,July 2010,Active
  UKEX,UKRANIAN EXCHANGE,UA,UKRAINE,KIEV,,April 2010,Active
  UKGD,UK GILTS MARKET,GB,UNITED KINGDOM,LONDON,,July 2011,Active
  UKPX,APX POWER UK,GB,UNITED KINGDOM,LONDON, ,June 2006,Active
  VEGA,VEGA-CHI,GB,UNITED KINGDOM,LONDON,,September 2009,Active
  VKAB,KABU.COMPTS-VWAP,JP,JAPAN,TOKYO,,February 2011,Active
  VMFX,THE FAROESE SECURITIES MARKET,FO,FAROE ISLANDS,TORSHAVN,,August 2011,Active
  VMTS,MTS SLOVENIA,GB,UNITED KINGDOM,LONDON, ,August 2007,Active
  VPXB,NYSE EURONEXT - VENTES PUBLIQUES BRUSSELS,BE,BELGIUM,BRUSSELS, ,August 2007,Active
  VTEX,VORTEX,US,UNITED STATES OF AMERICA,NEW YORK,,March 2009,Active
  