| 1 | Vonovia
real estate industry | €5.2B | 12,117 | 77 | A |
| 2 | Vonovia SE | €5.2B | 12,117 | 69 | C |
| 3 | Eickhoff Verwaltungs- und Beteiligungs GmbH | €328.2M | 897 | 69 | C+ |
| 4 | orange organization | €268.2M | 350 | 70 | B |
| 5 | phenox | €85.6M | 350 | 60 | C+ |
| 6 | ECOSOIL Nord West GmbH | €52.9M | 350 | 60 | C+ |
| 7 | Daiwa House Modular Europe GmbH | €52.9M | 350 | 60 | C+ |
| 8 | G DATA CyberDefense AG | €40.8M | 46 | 69 | C |
| 9 | Petrovöll GmbH Motor Oil & Lubricants | €39.2M | 125 | 60 | C+ |
| 10 | ECOSOIL Nord-West GmbH | €34.8M | -- | 69 | C+ |
| 11 | Smartgators (IT Company) | €33.1M | 350 | 60 | C+ |
| 12 | CT das radio | €31.3M | 125 | 60 | C+ |
| 13 | Schlaraffia - Aquinos Bedding Germany GmbH | €29.9M | 125 | 60 | C+ |
| 14 | Reineke Mess- Und Regeltechnik GmbH | €29.2M | 125 | 60 | C+ |
| 15 | ENEXIO Service | €29.2M | 125 | 60 | C+ |
| 16 | BOMAFA Armaturen GmbH | €29.2M | 125 | 60 | C+ |
| 17 | Gebr.Eickhoff Maschinenfabrik u.Eisengießerei GmbH | €27.7M | 36 | 69 | C+ |
| 18 | "USB Service GmbH" | €27.1M | 2 | 69 | C+ |
| 19 | AYBEY ELEKTRONIK GmbH | €23.7M | 125 | 60 | C+ |
| 20 | eldis Rhein-Ruhr GmbH | €17.8M | 30 | 60 | C+ |
| 21 | energiehoch3 Stromgutscheine | €16.0M | 125 | 60 | C+ |
| 22 | evu zählwerk Abrechnungs- und Servicegesellschaft mbH | €16.0M | 125 | 60 | C+ |
| 23 | EBZ Business School - University of Applied Sciences | €14.3M | 125 | 60 | C+ |
| 24 | Städt.-Gymn. Schiller-Schule | €14.3M | 125 | 60 | C+ |
| 25 | ZPP INGENIEURE AG - A SOCOTEC COMPANY | €12.6M | 350 | 60 | C+ |
| 26 | ekugellager.de | €12.4M | 30 | 60 | C+ |
| 27 | AS Zaunbau | €12.2M | 30 | 60 | C+ |
| 28 | A4-Papier.de | €12.2M | 30 | 60 | C+ |
| 29 | blennemann - setter since 1886 | €12.2M | 30 | 60 | C+ |
| 30 | Tech Advertising GmbH | €12.2M | 30 | 60 | C+ |
| 31 | Diakonie Ruhr gemeinnützige GmbH | €11.9M | 2,021 | 69 | C |
| 32 | ausbildung.de | €11.9M | 125 | 60 | C+ |
| 33 | Gantner Electronic GmbH Deutschland | €11.8M | 125 | 60 | C+ |
| 34 | Intercomputer Global Services GmbH&Co.KG | €11.8M | 125 | 60 | C+ |
| 35 | FBK Feuerungsbau Köpke GmbH & Co. KG | €11.8M | 30 | 60 | C+ |
| 36 | Milestone.bo | €8.2M | 125 | 50 | C |
| 37 | SEVEN STONES - Living in the district | €8.2M | 125 | 50 | C |
| 38 | Medic Assist - HeartStart Solutions | €7.3M | 30 | 50 | C |
| 39 | ATLAS medical technologies GmbH | €7.3M | 30 | 50 | C |
| 40 | cristinenmoor® | €7.2M | 30 | 50 | C |
| 41 | SAFETEE GmbH - Safety Engineering Experts | €6.8M | 30 | 50 | C |
| 42 | montanbüro gmbh | €6.8M | 30 | 50 | C |
| 43 | LJV NRW | €6.6M | 30 | 50 | C |
| 44 | RadimDienst | €6.3M | 30 | 50 | C |
| 45 | mi - meyer ∙ ingenieure gmbh | €5.5M | 30 | 50 | C |
| 46 | semasquare | €5.1M | 30 | 50 | C |
| 47 | mybox | €4.9M | 30 | 50 | C |
| 48 | Be Tasty GmbH - Chillers Bars & Restaurant | €4.9M | 30 | 50 | C |
| 49 | zerna baumanagement gmbh | €4.5M | 30 | 50 | C |
| 50 | studienkolleg des ökumenischen studienwerks | €3.4M | 30 | 50 | C |
| 51 | Masterstudiengang AMM Architektur Media Management | €3.4M | 30 | 50 | C |
| 52 | GLS Zukunftsstiftung Entwicklung | €3.2M | 5 | 69 | C+ |
| 53 | Institut für Friedenssicherungsrecht und Humanitäres Völkerrecht (IFHV) | €3.1M | 30 | 50 | C |
| 54 | rübsamen partner | €3.1M | 30 | 50 | C |
| 55 | Röhrich & Partner Organisationsberatung | €2.8M | 30 | 50 | C |
| 56 | Google Developer Students Club RUB | €2.8M | 30 | 50 | C |
| 57 | TASTAN | IT - EXCELLENCE ON DEMAND | €2.8M | 30 | 50 | C |
| 58 | tracekey solutions GmbH - The No. 1 for small and mid-sized businesses | €2.7M | 30 | 50 | C |
| 59 | JobMatch.pro | €2.6M | 30 | 50 | C |
| 60 | ALPHA STAFF - Der Personaldienstleister | €2.6M | 30 | 50 | C |
| 61 | MyGermanWay | €2.6M | 30 | 50 | C |
| 62 | ALFA Möbel Vertrieb GmbH | €2.5M | -- | 69 | C+ |
| 63 | Gastro Discount | €2.1M | 5 | 50 | C |
| 64 | Kong Island | €2.0M | 5 | 50 | C |
| 65 | Lueg Mercedes Center | €2.0M | 5 | 50 | C |
| 66 | BAWOAG GmbH & Co. KGaA | €2.0M | -- | 69 | C+ |
| 67 | rosenthal parkett | €2.0M | 5 | 50 | C |
| 68 | Energie- und Wasserversorgung Mittleres Ruhrgebiet GmbH | €1.6M | 36 | 69 | C+ |
| 69 | Carex Automotive Trading Automobilhandel | €1.5M | 5 | 50 | C |
| 70 | xemX | €1.4M | 5 | 50 | C |
| 71 | tourep Reisen & Service GmbH | €1.4M | 5 | 50 | C |
| 72 | Paul Gothe GmbH | €1.3M | 5 | 50 | C |
| 73 | 3DMedSim GmbH | €1.2M | 5 | 50 | C |
| 74 | rotary club bochum-hellweg | €1.2M | 125 | 50 | C |
| 75 | FOTON BROCK | €1.2M | 5 | 50 | C |
| 76 | lehrstuhl werkstoffprüfung | €1.1M | 5 | 50 | C |
| 77 | Baudynamik Heiland & Mistler GmbH | €1.1M | 5 | 50 | C |
| 78 | Rotary Club Bochum | €1.1M | 125 | 50 | C |
| 79 | Da Aldo | €1.1M | 5 | 50 | C |
| 80 | Weber Fitness Vertriebs GmbH | €1.1M | 5 | 50 | C |
| 81 | Kemper - Steiner & Partner Architekten GmbH | €1.1M | 30 | 50 | C |
| 82 | Allianz Versicherung Marcus Sill e.K. | Versicherungen - Baufinanzierungen - Altersvorsorge | €1.1M | 5 | 50 | C |
| 83 | mark ingenieure | €1.0M | 5 | 50 | C |
| 84 | Schwarzberg Maschinen GmbH | €1.0M | 5 | 40 | D |
| 85 | Le Kork GmbH | €995K | 5 | 40 | D |
| 86 | Landesspracheninstitut in der Ruhr-Universität Bochum (LSI) | €988K | 30 | 40 | D |
| 87 | schacht32 gmbh | €923K | 5 | 40 | D |
| 88 | leadin experts - der nr.1 partner für die vermarktung von personenmarken | €923K | 5 | 40 | D |
| 89 | the destination office | €923K | 5 | 40 | D |
| 90 | Minber.de | €908K | 30 | 40 | D |
| 91 | säck und nolde distribution | €898K | 5 | 40 | D |
| 92 | iTInchen | €851K | 5 | 40 | D |
| 93 | Entracon Projektservice | €851K | 5 | 40 | D |
| 94 | deeplify GmbH | €851K | 5 | 40 | D |
| 95 | ShiftDigital Government Solutions GmbH | €851K | 5 | 40 | D |
| 96 | nevigo | €845K | 30 | 40 | D |
| 97 | StadtwerkeBochum | €813K | 30 | 40 | D |
| 98 | FBW Fassadenbau | €755K | 5 | 40 | D |
| 99 | Bauunternehmung Vera Malic GbR | €755K | 5 | 40 | D |
| 100 | lieferflitzer.de | €644K | 5 | 40 | D |