Yanni Sianis – Biography
Last update: April 21, 2026Executive profile
Yanni Sianis is currently
Chief of Staff at Calamos - View - Calamos org chart
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The colleagues of Yanni Sianis
Company Colleagues
- At Calamos, Yanni Sianis has 50 colleagues including John Koudounis (CEO), Brandon Nelson (Portfolio)…
Industry Colleagues
- In the Financial Services industry, Yanni Sianis has 59,583 colleagues in 4,103 companies located in 107 countries. 28,722 executive movements have been recorded in the last 12 months. Learn more about Financial Services.
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