Naperville’s business landscape includes a strong mix of corporate headquarters and major regional technology hubs.
* **Nokia:** Maintains a massive research and development campus along the I-88 corridor (formerly Alcatel-Lucent and Bell Labs). * **Calamos Investments:** A global asset management firm headquartered in a prominent campus in the city. * **BMO:** Operates a large regional technology and operations center here. * **Edward Hospital (Endeavor Health):** Consistently one of the city's largest employers, driving the local healthcare economy. * **Nicor Gas:** Headquartered nearby, employing a significant portion of the local workforce along with a strong concentration of logistics, insurance, and professional services firms.