1977 headquarters naperville il united states products equity fixed income and alternative investments total assets 20.1 billion number of employees 300 5 31 2011 website www.calamos.com calamos asset management nasdaq clms is a diversified global investment firm offering innovative investment strategies including u.s. growth equity global equity convertible multi asset and alternatives . the firm offers strategies through separately managed portfolios mutual funds closed end funds private funds an exchange traded fund and ucits funds . clients include major corporations pension funds endowments foundations and individuals as well as the financial advisors and consultants who serve them . headquartered in the chicago metropolitan area the firm also has offices in london new york and san francisco . 1 history edit calamos began as a boutique investment manager in the 1970s developing strategies that maximized the potential of convertible securities to generate excess returns and manage risk . 2 calamos employs more than 300 individuals in naperville illinois 3 as well as sales and client service professionals located throughout the united states and in england . 4 5 john calamos sr. is the chairman and chief investment officer 6 john s. koudounis is chief executive officer 7 references edit calamos investments clms investor relations . www.calamos.com . retrieved 2016 03 16 . http calamos.com campaign 2015 q4 convertiblesecurities corporate office . london england office . bart chris november 8 2010 . the most trustworthy companies in america . forbes . http www.calamos.com fundinvestor about investment organization http phx.corporate ir.net phoenix.zhtml c 182276 & p irol newsarticle & id 2148377 external links edit official calamos website retrieved from https en.wikipedia.org w index.php title calamos & oldid 729579193 categories companies listed on nasdaqcompanies based in naperville illinois navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a bookdownload as pdfprintable version languages add links this page was last modified on 13 july 2016 at 05 12 . text is available under the creative commons attribution sharealike license ; additional terms may apply . by using this site you agree to the terms of use and privacy policy . wikipedia is a registered trademark of the wikimedia foundation inc. a non profit organization . privacy policy about wikipedia disclaimers contact wikipedia developers cookie statement mobile view