what is an unlisted security 
an unlisted security is a financial instrument that is not traded on a formal exchange because it does not meet listing requirements trading of unlisted securities is done on the over the counter otc market and they are often called otc securities market makers or dealers facilitate the buying and selling of unlisted securities on the otc market understanding unlisted securityunlisted securities are usually issued by smaller or new firms that cannot or do not wish to comply with the requirements of an official exchange such as market capitalization thresholds or listing fees furthermore because they are not exchange traded unlisted securities are often less liquid than listed securities unlisted stock can be tracked via pink sheets or on the over the counter bulletin board otcbb securities must meet a number of requirements to be listed on an exchange for example to be listed on the new york stock exchange nyse a publicly traded stock must represent a company that surpasses an annual income or market capitalization threshold the company also must have issued a specific number of shares and be able to afford the exchange s listing fee these requirements ensure that only the highest quality companies trade on exchanges thus unlisted securities may be of lower quality and present a greater risk to investors types of unlisted financial instrumentsthe most familiar type of unlisted security is common stock often traded on the otcbb or the pink sheets this includes penny stocks which trade for extremely low prices while some are legitimate foreign companies that don t wish to file reports with the sec there are also many unlisted non stock instruments including corporate bonds government securities and certain derivative products such as swaps which are traded in the otc market risks investors should knowthe normal risks associated with investing are magnified with unlisted securities because size and other requirements for companies are reduced or eliminated some unlisted companies may be undercapitalized have highly risky business plans and be no more than an idea without a plan for success other unlisted transactions carry counterparty risk liquidity concerns and interconnection risks this can include one side reneging on the contract also since there is no formal exchange or clearing mechanism it is up to the reputation of dealers and or counterparties to fulfill all obligations of the transactions including delivery of securities and payment of any monies required 