| 1 | Proseco B.V. | Netherlands | Amsterdam | Tweede Weteringplantsoen 21 | Noord-holland | 1017 ZD | proseco.***** | 2020 | $33,002,613,502 | 19 | N/A | N/A | 28041697 |
| 2 | Atlas Ontario LP | Canada | Toronto | 4000-199 Bay St | Ontario | M5L 1A9 | r2-re.***** | 2020 | $12,858,380,688 | 4 | N/A | N/A | N/A |
| 3 | Allied Universal Manager LLC | USA | Conshohocken | 161 Washington St Ste 600 | Montgomery | 19428 | aus.***** | 2016 | $8,806,253,843 | 250,010 | N/A | N/A | 6037353 |
| 4 | Secom CO., LTD. | Japan | Shibuya-ku | 1-5-1, Jingumae | Tōkyō | 150-0001 | N/A | 1962 | $8,046,811,052 | 64,655 | N/A | N/A | 6011001035920 |
| 5 | Securitas SA (PTY) LTD | South Africa | Johannesburg | 15 Chaplin Rd | Gauteng | 2196 | securitas-rsa.***** | 2004 | $7,092,548,268 | 2,000 | N/A | N/A | 200402672607 |
| 6 | Alsok Co.,ltd. | Japan | Minato-ku | 1-6-6, Motoakasaka | Tōkyō | 107-0051 | N/A | 1965 | $3,700,913,986 | 64,733 | N/A | N/A | 3010401016070 |
| 7 | G4s Secure Solutions (canada) LTD | Canada | Toronto | 1000-150 Ferrand Dr | Ontario | M3C 3E5 | g4s.***** | 1964 | $2,745,729,000 | 9,000 | N/A | N/A | N/A |
| 8 | Societe Nationale Des Chemins De Fer Belges | Belgium | Saint-gilles | Rue de France 56 | Bruxelles Capitale | 1060 | belgiantrain.***** | 2012 | $2,707,446,601 | 2,335 | N/A | N/A | BE0203430576 |
| 9 | Securitas Canada LIMITED | Canada | Toronto | 235 Yorkland Blvd 4th Fl | Ontario | M2J 4Y8 | securitas.***** | 1999 | $2,440,648,000 | 8,000 | N/A | N/A | 4544374 |
| 10 | The People's Choice | India | Bengaluru | No :107 | Karnataka | 560032 | N/A | 1989 | $2,238,700,052 | 25 | N/A | N/A | N/A |
| 11 | Crowd Support B.V. | Netherlands | Zwolle | Loggerweg 7 | Overijssel | 8042 PG | crowdsupport.***** | 2016 | $1,732,427,583 | 112 | N/A | N/A | 55736483 |
| 12 | Hoffmann Bedrijfsrecherche B.V. | Netherlands | Almere | Luidsprekerstraat 10 | Flevoland | 1322 AX | hoffmannbv.***** | 2011 | $1,732,427,583 | 83 | N/A | N/A | 33170622 |
| 13 | Trigion Beveiliging B.V. | Netherlands | Schiedam | Karel Doormanweg 4 | Zuid-holland | 3115 JD | trigion.***** | 1979 | $1,732,427,583 | 3,828 | N/A | N/A | 24227152 |
| 14 | Crowd Support Services B.V. | Netherlands | Zwolle | Loggerweg 7 | Overijssel | 8042 PG | crowdsupport.***** | 2016 | $1,732,427,583 | 3 | N/A | N/A | 61264423 |
| 15 | Securitas AG Schweizerische Bewachungsgesellschaft | Switzerland | Bern | Seilerstrasse 7 | Bern | 3011 | N/A | 1907 | $1,703,209,500 | 16,000 | N/A | N/A | CHE-106.832.531 |
| 16 | Securitas Holdings, INC. | USA | Parsippany | 9 Campus Dr | Morris | 07054 | securitasinc.***** | 1989 | $1,688,202,934 | 250,000 | N/A | N/A | N/A |
| 17 | Securitas Services, INC. | USA | Parsippany | 9 Campus Dr | Morris | 07054 | securitasinc.***** | 2003 | $1,604,531,143 | 130,000 | N/A | N/A | 3633493 |
| 18 | Constellis Holdings, LLC | USA | Herndon | 13530 Dulles Technology Dr Ste 500 | Fairfax County | 20171 | constellis.***** | 2016 | $1,598,745,112 | 15,000 | N/A | N/A | 4879156 |
| 19 | Securitas Security Services USA, INC. | USA | Parsippany | 9 Campus Dr | Morris | 07054 | securitasinc.***** | 2002 | $1,588,276,238 | 100,000 | N/A | N/A | 3500796 |
| 20 | Garda Security Group G.P. | Canada | Montréal | 2300 Rue Émile-belanger | Québec | H4R 3J4 | talentworld.***** | 2012 | $1,525,405,000 | 5,000 | N/A | N/A | N/A |
| 21 | Equans Noord-Nederland B.V. | Netherlands | Roden | Exportweg 1 | Drenthe | 9301 ZV | equans.***** | 1880 | $1,410,024,216 | 151 | N/A | N/A | 04029675 |
| 22 | Paragon Protection LTD | Canada | Toronto | 488-1210 Sheppard Ave E | Ontario | M2K 1E3 | paragonsecurity.***** | 1976 | $1,372,864,500 | 4,500 | N/A | N/A | N/A |
| 23 | Brink's, Incorporated | USA | Richmond | 1801 Bayberry Ct Ste 400 | Richmond City | 23226 | brinkscompany.***** | 1960 | $1,313,081,266 | 45,000 | N/A | N/A | 0548002 |
| 24 | Securitas Direct España Sau | Spain | Pozuelo de Alarcón | Calle Priegola 2 | Madrid | 28224 | securitasdirect.***** | 1989 | $1,286,678,129 | 9,286 | N/A | N/A | A26106013 |
| 25 | Southwestern Teamsters Security Fund | USA | Phoenix | 2400 W Dunlap Ave Ste 250 | Maricopa | 85021 | N/A | 2009 | $1,286,313,579 | 4 | N/A | N/A | 866052021 |
| 26 | Universal Services Of America, LP | USA | Irvine | 450 Exchange | Orange | 92602 | aus.***** | 2016 | $1,215,770,679 | 150,000 | N/A | N/A | N/A |
| 27 | Certis Cisco Security PTE. LTD. | Singapore | Singapore | 6 Commonwealth Lane | Singapore | 149547 | certisgroup.***** | 2004 | $1,156,539,079 | 265 | N/A | N/A | 200410167W |
| 28 | Trojan Securitas India Private LIMITED | India | Chennai | C 104 | Tamil Nadu | 600053 | trojansecuritas.***** | 2005 | $1,035,231,508 | 31 | N/A | N/A | 33AACCT3563E1ZM |
| 29 | Prosegur Soluciones Integrales De Seguridad España SL | Spain | Madrid | Calle Pajaritos 24 | Madrid | 28007 | prosegur.***** | 2015 | $983,883,236 | 19,428 | N/A | N/A | B87222014 |
| 30 | Kötter GMBH & CO. KG Verwaltungsdienstleistungen | Germany | Essen | Wilhelm-beckmann-str. 7 | Essen, Stadt | 45307 | koetter.***** | 1934 | $979,653,144 | 14,800 | N/A | N/A | 45130A6316 |
| 31 | Allied Security Holdings LLC | USA | Conshohocken | 161 Washington St Ste 600 | Montgomery | 19428 | aus.***** | 2000 | $946,477,390 | 53,760 | N/A | N/A | 3817944 |
| 32 | The Adt Security CORPORATION | USA | Boca Raton | 1501 W Yamato Rd | Palm Beach | 33431 | adt.***** | 2012 | $906,367,146 | 17,100 | N/A | N/A | 660781524 |
| 33 | Transguard Group L.L.C | United Arab Emirates | Sharjah | King Abdulaziz Street, Al-qasimiyah / Sharjah | Sharjah | N/A | N/A | 2002 | $873,616,906 | 0 | N/A | N/A | 549436 |
| 34 | Transguard Group L.L.C | United Arab Emirates | Abu Dhabi | Rabina - Section 164 - M201 - M202, Alain | Abu Dhabi | N/A | N/A | 2002 | $873,616,906 | 0 | N/A | N/A | CN-1145595 |
| 35 | Beers Service & Onderhoud B.V. | Netherlands | Berkel en Rodenrijs | Morsestraat 20 | Zuid-holland | 2652 XG | beerselektro.***** | 2019 | $861,844,158 | 13 | N/A | N/A | 24313813 |
| 36 | Tijssens Electrotechniek B.V. | Netherlands | Heeze | De Boelakkers 25 | Noord-brabant | 5591 RA | tijssens.***** | 2023 | $861,844,158 | 64 | N/A | N/A | 17175157 |
| 37 | B-Securite B.V. | Netherlands | Hoofddorp | Polarisavenue 151 | Noord-holland | 2132 JJ | b-securite.***** | 2025 | $825,232,700 | 20 | N/A | N/A | 73162914 |
| 38 | Black Knight Security INC. | USA | Pittsburgh | 320 Fort Duquesne Blvd | Allegheny | 15222 | blackknightsecurity.***** | 2010 | $810,000,000 | 230 | N/A | N/A | 0003969113 |
| 39 | Al-Sanadid Security Guard Company | Saudiarabia | Riyadh | Unite Number 10, Building Number 7144, Abi Bakr as Siddiq Street | Riyadh | 13335 | N/A | 2011 | $753,321,317 | 400 | N/A | N/A | 1010308973 |
| 40 | Securitas Seguridad España Sau | Spain | Madrid | Calle Entrepeñas 27 | Madrid | 28051 | securitas.***** | 1989 | $742,539,927 | 16,036 | N/A | N/A | A79252219 |
| 41 | Securiguard Services LIMITED | Canada | Vancouver | 1445 Georgia St W | British Columbia | V6G 2T3 | securiguard.***** | 2014 | $724,872,456 | 2,376 | N/A | N/A | N/A |
| 42 | S-Tec System Co.,ltd. | Southkorea | Seoul | 619 Gaepo-ro, Gangnam-gu | Seoul | 06336 | N/A | 1998 | $684,391,856 | 11,335 | N/A | N/A | 2028162708 |
| 43 | Transportadora De Caudales Juncadella S.A. | Argentina | Vicente López | Presidente General Julio Argentino Roca 4530 | Buenos Aires | B1604BZR | prosegur.***** | 1999 | $628,767,375 | 3,390 | N/A | N/A | 30546969874 |
| 44 | Sis Australia Holdings PTY LTD | Australia | Sydney | L 2 63-79 Parramatta Rd | New South Wales | 2128 | msssecurity.***** | 2008 | $623,936,924 | 7,485 | N/A | N/A | 132211459 |
| 45 | G4s Secure Solutions (UK) LIMITED | Unitedkingdom | London | 6th Floor | London | SW1H 0DB | N/A | 1972 | $622,128,116 | 12,959 | N/A | N/A | 01046019 |
| 46 | Securitas France SARL | France | Issy-les-moulineaux | 253 Quai de la Bataille de Stalingrad | Hauts-de-seine | 92130 | telesurveillance.***** | 1975 | $614,953,227 | 11,999 | N/A | N/A | 30449785204226 |
| 47 | Sis Australia Group PTY LTD | Australia | Sydney | L 2 63-79 Parramatta Rd | New South Wales | 2128 | msssecurity.***** | 2008 | $592,039,833 | 7,485 | N/A | N/A | 132211806 |
| 48 | Securitas Sverige AB | Sweden | Stockholm | Lindhagensplan 70 | Stockholms Län | 11243 | securitas.***** | 1967 | $568,376,176 | 5,000 | N/A | N/A | 5561086082 |
| 49 | Tepe Savunma Ve Guvenlik Sistemleri Sanayi Anonim Sirketi | Turkey | Ankara | D:90, No:3 Universiteler Mahallesi | Ankara | 06800 | tepesavunma.***** | 2003 | $561,813,001 | 28,303 | N/A | N/A | 126251 |
| 50 | Taiwan Secom CO., LTD. | Taiwan | Taipei City | No.139, 6f, 7f, Cheng-chou Rd., | Taipei City | 103612 | N/A | 1977 | $549,798,704 | 2,470 | N/A | N/A | 12148598 |