A large trading order, defined on the New York Stock Exchange as an order that consists of 10,000 shares of a given stock or at a total market value of $200,000 or more. Bloomberg Financial Dictionary
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A privately negotiated futures transaction executed apart from public auction market, either on or off the exchange trading floor. There are minimum order size requirements that vary according to product and order type, and eligibility for engaging in such trades is strictly regulated. Block Trades can only be negotiated with futures, options on futures, and CBOT swap trades (excludes all other basis trades). Chicago Mercantile Exchange Glossary
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Defined as 75 W the normal market size ( NMS). Where a trade of this size is completed, it must be reported into SEAQ under the usual deadlines. However, whereas most trades are then displayed on the screen to give information to investors, display of these larger trades is usually delayed for five business days. This gives the market maker who has done the trade the opportunity to cover his position in the stock. Dresdner Kleinwort Wasserstein financial glossary
See also maximum publication level and Securities. Generally, the phrase block trade can mean a trade which is larger than the normal size of a trade for the particular stock. Block trading refers to the trading of large parts of a portfolio and is often referred to as upstairs trading in the USA. Dresdner Kleinwort Wasserstein financial glossary
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The purchase or sale of stock in a large quantity, normally 10,000 shares or more. Exchange Handbook Glossary
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The transaction was reported using the block trade facility, which is at least 75 times the NMS for a security with an NMS of 2,000 shares OR above 50 times the NMS for a security with an NMS of 1,000 shares. London Stock Exchange Glossary
Financial and business terms. 2012.