Exhibit 21.1

LIST OF BGC SUBSIDIARIES

AMEEFI SERVICES, INC.

AQUA SECURITIES HOLDINGS, LLC

AQUA SECURITIES, L.P.

AQUA SOFTWARE, LLC

AUREL BGC

BGC ARGENTINA HOLDINGS I, L.P.

BGC ARGENTINA HOLDINGS II, L.P.

BGC ARGENTINA HOLDINGS, LLC

BGC BRAZIL HOLDINGS LIMITADA

BGC BRAZIL HOLDINGS, LLC

BGC BROKERS GP LIMITED

BGC BROKERS HOLDINGS, L.P.

BGC BROKERS HOLDINGS, LLC

BGC BROKERS INVESTMENT, L.P.

BGC BROKERS L.P.

BGC BROKERS US HOLDINGS, LLC

BGC BROKERS US, L.P.

BGC CANADA SECURITIES COMPANY

BGC CANADA SECURITIES COMPANY HOLDINGS, L.P.

BGC CANADA SECURITIES COMPANY HOLDINGS, LLC

BGC CAPITAL MARKETS (HONG KONG) LIMITED

BGC CAPITAL MARKETS (JAPAN) LLC

BGC CAPITAL MARKETS (SWITZERLAND) LLC

BGC CAPITAL MARKETS AND FOREIGN EXCHANGE BROKER (KOREA) LIMITED

BGC CAPITAL MARKETS, L.P.

BGC CAYMAN ISLANDS HOLDINGS I LIMITED

BGC CHINA HOLDINGS, LLC

BGC CHINA, L.P.

BGC DERIVATIVE MARKETS HOLDINGS, LLC

BGC DERIVATIVE MARKETS, L.P.

BGC ENVIRONMENTAL BROKERAGE SERVICES HOLDINGS, LLC

BGC ENVIRONMENTAL BROKERAGE SERVICES, L.P.

BGC EUROPEAN GP LIMITED

BGC EUROPEAN HOLDINGS, L.P.

BGC FINANCIAL GROUP, INC.

BGC FINANCIAL, L.P.

BGC FRANCE HOLDINGS

BGC FUNDING SERVICES GP LIMITED

BGC FUNDING SERVICES LP

BGC GLOBAL HOLDINGS GP LIMITED

BGC GLOBAL HOLDINGS, L.P.

BGC GLOBAL LIMITED

BGC GP LIMITED

BGC GP, LLC

BGC HOLDINGS (TURKEY), LLC

BGC HOLDINGS II, LLC

BGC HOLDINGS U.S., INC.

BGC HOLDINGS, L.P.

BGC HOLDINGS, LLC

1

BGC INFORMATION HOLDINGS, LLC

BGC INFORMATION, L.P.

BGC INTERNATIONAL

BGC INTERNATIONAL GP LIMITED

BGC INTERNATIONAL HOLDINGS, L.P.

BGC INTERNATIONAL, L.P.

BGC MARKET DATA, L.P.

BGC MEXICO R.E. HOLDINGS, LLC

BGC MEXICO R.E. HOLDINGS, S. de R.L. de C.V.

BGC NOTE ACQUISITION CO. HOLDINGS, LLC

BGC NOTE ACQUISITION CO., L.P.

BGC NOTES, LLC

BGC PARTNERS (AUSTRALIA) PTY LIMITED

BGC PARTNERS (SINGAPORE) LIMITED

BGC PARTNERS CIS LLC

BGC PARTNERS MENKUL DEGERLER A.S.

BGC PARTNERS, INC.

BGC PARTNERS, L.P.

BGC RADIX ENERGY L.P.

BGC REAL ESTATE OF ARIZONA, LLC

BGC REAL ESTATE OF MICHIGAN, LLC

BGC REAL ESTATE OF NEVADA, LLC

BGC REAL ESTATE OF OHIO HOLDINGS, LLC

BGC REAL ESTATE OF OHIO, L.P.

BGC RIE HOLDINGS, LLC

BGC SA FINANCIAL BROKERS (PTY) LIMITED

BGC SECURITIES (HONG KONG) LLC

BGC SECURITIES (SINGAPORE) LIMITED

BGC SECURITIES (SOUTH AFRICA) PTY LIMITED

BGC SECURITIES SARL

BGC SERVICES (HOLDINGS) LLP

BGC SHOKEN KAISHA LIMITED

BGC TRADING HOLDINGS, LLC

BGC URUGUAY HOLDINGS, LLC

BGC USA HOLDINGS, LLC

BGC USA, L.P.

BGCANTOR MARKET DATA HOLDINGS, LLC

BGCBI, LLC

BGCCMHK HOLDINGS II, LLC

BGCCMHK HOLDINGS, LLC

BGCCMLP HOLDINGS, LLC

BGCF HOLDINGS, LLC

BGCIHLP, LLC

BGCSHLLP HOLDINGS LIMITED

eAB HOLDINGS, LLC

ECCO LLC

ECCOWARE LIMITED

EIP HOLDINGS ACQUISITION, LLC

EIP HOLDINGS, LLC

ELX FUTURES HOLDINGS, LLC

ELX FUTURES, L.P.

eSPEED (AUSTRALIA) PTY LIMITED

2

ESPEED (CANADA), INC.

ESPEED (HONG KONG) HOLDINGS I, INC.

ESPEED (HONG KONG) HOLDINGS II, INC.

ESPEED (HONG KONG) LIMITED

ESPEED (JAPAN) LIMITED

ESPEED A LIMITED

ESPEED B LIMITED

ESPEED BROKERAGE HOLDINGS, LLC

ESPEED BROKERAGE, L.P.

ESPEED ELX FUTURES HOLDINGS, L.P.

ESPEED ELX FUTURES HOLDINGS, LLC

ESPEED INTERNATIONAL LIMITED

ESPEED MARKETS HOLDINGS, LLC

ESPEED MARKETS, L.P.

ESPEED SUPPORT SERVICES LIMITED

ESPEED TECHNOLOGY SERVICES HOLDINGS, LLC

ESPEED TECHNOLOGY SERVICES, L.P.

ESPEED, LLC

ESX CLEARING HOLDINGS, LLC

ESX CLEARING, L.P.

EURO BROKERS (SWITZERLAND) S.A.

EURO BROKERS CANADA LIMITED

EURO BROKERS HOLDINGS LTD

EURO BROKERS MEXICO S.A. de C.V.

EURO BROKERS SERVICES LTD

FHLP, LLC

FREEDOM INTERNATIONAL BROKERAGE COMPANY

FREEDOM INTERNATIONAL HOLDING, L.P.

G&E ACQUISITION COMPANY, LLC

HOLDING DI SERVIZI FINANZIARI SRL

ITSECCO HOLDINGS LIMITED

JADESTONE CONSULTANTS LIMITED

KLEOS MANAGED SERVICES HOLDINGS, LLC

KLEOS MANAGED SERVICES, L.P.

LIQUIDEZ DISTRIBUIDORA DE TITULOS E VALORES MOBILIARIOS LTDA.

MIS BROKERS LIMITED

MIS HOLDINGS, LLC

MUNICIPAL PARTNERS LLC

NEWMARK & COMPANY REAL ESTATE, INC.

NEWMARK BUILDING SERVICES, LLC

NEWMARK CONSTRUCTION SERVICES, L.L.C.

NEWMARK LI LLC

NEWMARK MIDWEST REGION, LLC

NEWMARK OF CONNECTICUT LLC

NEWMARK OF LONG ISLAND LLC

NEWMARK OF MASSACHUSETTS LLC

NEWMARK OF SOUTHERN CALIFORNIA

NEWMARK OF WASHINGTON D.C. LLC

NEWMARK REAL ESTATE OF DALLAS, LLC

NEWMARK REAL ESTATE OF HOUSTON, LLC

NEWMARK REAL ESTATE OF MASSACHUSETTS, LLC

NEWMARK REAL ESTATE OF NEW JERSEY, L.L.C.

3

NEWMARK REAL ESTATE OF PRINCETON LLC

NEWMARK RETAIL PARTNERS LLC

NEWMARK RETAIL, LLC

NEWMARK SOUTHERN REGION, LLC

NGA, LLC

NNJ, L.L.C.

NOC LLC

NOH, LLC

NRB, LLC

NRED, LLC

NREP, LLC

NWDC LLC

REXX INDEX, LLC

SCARP LIMITED

SEMINOLE CAPITAL MARKETS, L.P.

SEMINOLE FINANCIAL

SEMINOLE FINANCIAL (EUROPE) LP

SEMINOLE FINANCIAL LIMITED

SEMINOLE TRADING HOLDINGS I, LLC

SEMINOLE TRADING HOLDINGS II, LLC

TOWER BRIDGE GP LIMITED

TOWER BRIDGE INTERNATIONAL SERVICES HOLDINGS, L.P.

TOWER BRIDGE INTERNATIONAL SERVICES HOLDINGS, LLC

TOWER BRIDGE INTERNATIONAL SERVICES L.P.

TOWER BRIDGE SECURITIES LIMITED

TP HOLDINGS, LLC

TRADESOFT TECHNOLOGIES, INC.

TREASURYCONNECT LLC

4