NASDAQ is an exchange. An exchange is a place where transactions takes place (Buy/Sell).
ECN is an electronics communication networks and is completely different to an exchange.
ECN II film is motion picture film.
ECN Stands for Electronic Communication Network, which is a financial protocol used to relay buy/sell information to the participants in the network.
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ECN acronym can have different meanings depending of the field is used for. Some meanings include, but are not limited to, Explicit Congestion Notification, Engineering Computer Network and European Competition Network.
The symbol for ProShares Ultra Nasdaq Biotechnology in NASDAQ is: BIB.
The symbol for ProShares UltraShort Nasdaq Biotechnology in NASDAQ is: BIS.
The symbol for PowerShares NASDAQ Internet Portfolio in NASDAQ is: PNQI.
ECN is an acronym for Electronic Communications Network.A Forex ECN broker does not have a dealing desk but instead provides a marketplace where multiple market makers, banks and traders can enter in competing bids and offers into the platform and have their trades filled by multiple liquidity providers.ECN is one of five Forex broker types. Read about pros and cons of them in article "5 Forex broker types you need to know about"
The symbol for iShares NASDAQ Biotechnology Index Fund in NASDAQ is: IBB.
The symbol for NASDAQ Premium Income and Growth Fund Inc. in NASDAQ is: QQQX.
The symbol for Global X NASDAQ China Technology ETF in NASDAQ is: QQQC.