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US stocks volumes are different

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Christchurch, New Zealand
Trading Experience: Beginner
Platform: SC
Broker/Data: IB, BC, Dx Feed
Favorite Futures: US Equities
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Posts: 428 since Jul 2014
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shzhning View Post
one reason is the "fragmentation" of the stock market. volume is scattered among multiple venues like NYSE, NASDAQ, BATS, and a whole host of dark pools. not an easy job keeping tally of so-called off exchange trades.

That's inaccurate. Trades from all exchanges/ ECNs are reported to the SIP, even the FINRA ATS/ Non-ATS dark pool trades( although there might be a delay). So fragmentation is not going to be an issue for differences in reported volume.

There should not be major differences in Volume between popular retail data feeds.

I get the same/ close to volume from IB, IQ, and Barchart( Via Sierra chart).

The only difference would be that some brokers will include dark pool trades in their volume, eg Schwab, IB. Where is gimmick retail platforms, and typical retail data vendors will not, eg TOS, Kinetick( IQ feed), Barchart etc

Please post some examples and tickers. At this stage, i'd bet that the issue is most likely related to your platform/ configuration, than from your data feed.

"Free markets work because they allow people to be lucky, thanks to aggressive trial and error, not by giving rewards or incentives for skill. The strategy is, then, to tinker as much as possible and try to collect as many Black Swan opportunities as you can"

Last edited by Neo1; March 11th, 2017 at 09:13 PM. Reason: spelling
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