Investor · Naperville, IL
Calamos Advisors Llc
Open Calamos in the network graph →Capital
$2.7B
across filings
Active
Jan 2021
to Feb 2026
Most-connected co-filers (20)
Conor Walsh · George Town, Grand Cayman, Cayman Islands7 sharedDavid Watson · George Town, Grand Cayman, Cayman Islands7 sharedThomas E. Herman · Naperville, IL6 sharedCalamos Advisors Llc · Naperville, IL6 sharedJohn S. Koudounis · Naperville, IL6 sharedConor B. French · SAN FRANCISCO, CA6 sharedJohn B. Dahin, Jr · Altamonte Springs, FL6 sharedMatthew Holleran · Mountain View, CA6 sharedRaymond Hein · San Jose, CA6 sharedAdrian A. King · West Chester, PA5 sharedJohn P. Calamos, Sr · Naperville, IL5 sharedDaniel L. Dufresne · Naperville, IL5 sharedSteven E. Clark · George Town, Grand Cayamn, Cayman Islands5 sharedRobert F. Behan · Naperville, IL4 sharedJed Dean · Emeryville, CA4 sharedChatrasingh K. Joyram · Quatre Bornes, O44 sharedJacob Whitney · Fort Collins, CO3 sharedErik D. Ojala · Naperville, IL2 sharedCalamos Financial Services, Llc · Naperville, IL1 sharedCalamos Financial Services, Llc · Naperville, IL1 shared Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See Calamos in the interactive graph →