Most are unlisted on a major exchange, typically trading on the OTC Bulletin Board, where brokerage costs can be high.

绝大多数未在主要交易所上市，通常在经纪人成本很高的场外交易公告牌市场 进行交易。

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The Berkshire board said it was still considering legal action against Sokol to, among other things, recover any trading profits he made.

伯克希尔公司董事会称，他们还在考虑对索科尔采取法律行动，除其他事项之外，要求归还在此事件上获得的所有收益。

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And the Chicago Board Options Exchange was set up in 1973 as a forum for trading.

在1973年，芝加哥期权交易中心成立了，成为期权交易场所。

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Herzog Heine Geduld's Bulletin Board trading desk was shut down shortly after the company was bought out by Merrill Lynch.

FORBES: Magazine Article

On a normal day, the floors of the Big Board's trading rooms would be mostly empty.

FORBES: Magazine Article

In 1997 there were 430 marketmakers trading Bulletin Board stocks.

FORBES: Capital Markets & Investing