# Who knows first... 🥺
**URL:** https://tradingqna.com/t/who-knows-first/108750
**Category:** General
**Created:** [May 11, 2021, 10:48am UTC](https://tradingqna.com/t/who-knows-first/108750 "2021-05-11T10:48:29Z")
**Posts on this page:** 13
**Page:** 1
### Author:  [@VIPULK](https://tradingqna.com/u/VIPULK)
#### Post date: [May 11, 2021, 10:48am UTC](https://tradingqna.com/t/who-knows-first/108750/1 "2021-05-11T10:48:29Z")
Thought of sharing this vital information
[ ](https://www.youtube.com/watch?v=Gr0fUqnieX0)
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### Author:  [@Vij](https://tradingqna.com/u/Vij)
#### Post date: [May 11, 2021, 12:03pm UTC](https://tradingqna.com/t/who-knows-first/108750/2 "2021-05-11T12:03:28Z")
This is well known. Only algorithmic traders can benefit from this, if anything … You can’t think and punch orders manually that fast.
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### Author:  [@siva-reddy](https://tradingqna.com/u/siva-reddy)
#### Post date: [May 11, 2021, 12:37pm UTC](https://tradingqna.com/t/who-knows-first/108750/3 "2021-05-11T12:37:45Z")
Adding to that, why broker can’t share tick by tick data with client on trading platform is because of bandwidth issues, there can be thousands of ticks per second and all that info can’t be transferred via internet, he has given only half information. If one need that data they need to lay a leased line from exchange to their home which can costs lakhs to crores.
Brokers keep their servers at colo to execute trades which are latency driven, not all require it but who does HFTs or few arbitrages uses it. Just not brokers, institutions, HNIs also trade from colocation.
Because of just colo no retailer is at loss except who try to scalp manually or whose strategies are latency sensitive are at a disadvantage. Few advantages colo got for all is it improved liquidity and reduced impact costs.
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### Author:  [@VIPULK](https://tradingqna.com/u/VIPULK)
#### Post date: [May 11, 2021, 1:46pm UTC](https://tradingqna.com/t/who-knows-first/108750/4 "2021-05-11T13:46:23Z")
So @siva-reddy it’s an undue advantage offcourse coming at a high price to hni, algos and who all are willing to shell more …
But then this occurs which is baffling…
> **[Explained: The NSE co-location case investigation, and what SEBI’s new order...](https://indianexpress.com/article/explained/nse-co-location-case-investigation-sebi-explained-7183593/)**
>
> What is the National Stock Exchange (NSE) co-location case? What happened after the allegation of unfair access in algo trading at the NSE came to light? What action had SEBI taken earlier in the case? What does the latest SEBI adjudication order...
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### Author:  [@siva-reddy](https://tradingqna.com/u/siva-reddy)
#### Post date: [May 11, 2021, 1:56pm UTC](https://tradingqna.com/t/who-knows-first/108750/5 "2021-05-11T13:56:34Z")
> [@VIPULK](#):
>
> it’s an undue advantage offcourse coming at a high price to hni, algos and who all are willing to shell more …
>
> But then this occurs which is baffling…
It is fault of few bad apples in the system, not the fault of colocation it self.
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### Author:  [@marcos](https://tradingqna.com/u/marcos)
#### Post date: [May 12, 2021, 10:12am UTC](https://tradingqna.com/t/who-knows-first/108750/6 "2021-05-12T10:12:45Z")
hey @siva-reddy do you explain only the technicals or any questions regarding stock market
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### Author:  [@siva-reddy](https://tradingqna.com/u/siva-reddy)
#### Post date: [May 12, 2021, 10:40am UTC](https://tradingqna.com/t/who-knows-first/108750/7 "2021-05-12T10:40:45Z")
> [@marcos](#):
>
> do you explain only the technicals or any questions regarding stock market
If I know I can try giving my view, I don’t know everything, anyhow what is your query?
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### Author:  [@marcos](https://tradingqna.com/u/marcos)
#### Post date: [May 18, 2021, 6:04am UTC](https://tradingqna.com/t/who-knows-first/108750/8 "2021-05-18T06:04:51Z")
how do day traders and HFTs cover their trading costs when they trade on a single tick? do they have their own brokerage cards so that their brokerages come down to zero?
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### Author:  [@VIPULK](https://tradingqna.com/u/VIPULK)
#### Post date: [May 20, 2021, 2:08pm UTC](https://tradingqna.com/t/who-knows-first/108750/9 "2021-05-20T14:08:36Z")
Enjoy with popcorn… fight of two honchos
[ ](https://www.youtube.com/watch?v=VbcSubQ7dcU)
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### Author:  [@Prayag](https://tradingqna.com/u/Prayag)
#### Post date: [May 22, 2021, 7:16am UTC](https://tradingqna.com/t/who-knows-first/108750/10 "2021-05-22T07:16:35Z")
HFTs would likely have their own exchange memberships so as to reduce transaction costs (as their buy-sell spread are as low as Rs. 0.10 as mentioned in this [article](https://the-ken.com/story/alphagrep-in-the-shadows/)). During the past year, many international HFT firms ([Virtu Trading](https://enit.nseindia.com/MemDirWeb/brokerDetailPage_Beta?memID=2849&h_MemType=members), [XTX Securities,](https://enit.nseindia.com/MemDirWeb/brokerDetailPage_Beta?memID=3075&h_MemType=members) and [Jump Trading](https://enit.nseindia.com/MemDirWeb/brokerDetailPage_Beta?memID=3077&h_MemType=members)) started operations in India and all have taken up their own exchange memberships (as mentioned in [this article](https://economictimes.indiatimes.com/markets/stocks/news/up-close-local-wall-streets-algo-big-shots-bet-on-india/articleshow/81101445.cms)). Even other HFT firms that are active in India (like [AlphaGrep](https://enit.nseindia.com/MemDirWeb/brokerDetailPage_Beta?memID=2931&h_MemType=members), [Tower Research](https://enit.nseindia.com/MemDirWeb/brokerDetailPage_Beta?memID=2830&h_MemType=members), [Centillion Research](https://enit.nseindia.com/MemDirWeb/brokerDetailPage_Beta?memID=3069&h_MemType=members), [Graviton Research Capital](https://enit.nseindia.com/MemDirWeb/brokerDetailPage_Beta?memID=2918&h_MemType=members), etc) also have their own exchange memberships. Also, another way these HFT firms might be saving costs is by moving their registered office to Gift City as their is a [stamp duty waiver](https://www.moneycontrol.com/news/business/broking-firms-registered-at-gujarat-gift-city-to-get-stamp-duty-refund-5151191.html) for trading happening via there.
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### Author:  [@Prayag](https://tradingqna.com/u/Prayag)
#### Post date: [May 22, 2021, 7:36am UTC](https://tradingqna.com/t/who-knows-first/108750/11 "2021-05-22T07:36:28Z")
A few days ago SAT allowed NSE to withdraw the ₹6000 crores from the escrow account ([Order copy](http://sat.gov.in/english/pdf/E2021_JO2019333_26.PDF)) -
> **[SAT allows NSE to withdraw co-location revenue from escrow account](https://economictimes.indiatimes.com/markets/stocks/news/sat-allows-nse-to-withdraw-co-location-revenue-from-escrow-account/articleshow/82835082.cms)**
>
> In an order uploaded on its website on Friday, SAT has directed the closure of the escrow account and permitted the NSE to utilise the amount for the business purposes.
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### Author:  [@marcos](https://tradingqna.com/u/marcos)
#### Post date: [May 31, 2021, 7:14am UTC](https://tradingqna.com/t/who-knows-first/108750/12 "2021-05-31T07:14:09Z")
I placed a sell order on NSE at 9.06 AM for 1000 shares @ 115. there was a matching bid with same quantity n price. but the trade was not executed. why?
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### Author:  [@siva-reddy](https://tradingqna.com/u/siva-reddy)
#### Post date: [May 31, 2021, 7:26am UTC](https://tradingqna.com/t/who-knows-first/108750/13 "2021-05-31T07:26:29Z")
Maybe you should go through [this](https://support.zerodha.com/category/trading-and-markets/trading-faqs/market-sessions/articles/what-are-pre-market-and-post-market-sessions-and-orders) article on preopen session to understand things better.