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> Unfortunately the SEC only requires them to report transactions within 15 minutes, not in real time.

TRF reports must happen within 10 seconds or be submitted with a late modifier [0]. An executing broker systematically submitting all reports 15 minutes late would be investigated pretty quickly.

You can buy access to the consolidated tape from a marketdata provider, although this is going to be pretty prohibitively expensive for an individual.

[0] https://www.finra.org/rules-guidance/rulebooks/finra-rules/6...


I have a Polygon real-time market data subscription and everything comes real time except for darkpools.

From the customer service bot:

"Yes, other trades are generally reported faster than dark pool trades on our WebSocket. We stream market data in real-time as we receive it, with most trades being reported very quickly. For US stocks, the average latency for trades and quotes is less than 20ms.

However, dark pool trades can be reported with a delay. FINRA allows up to 15 minutes for reporting trades from dark pools. This means that while most trades come through almost instantly, dark pool trades might have a longer reporting time."

I'm not sure what market data provider provides dark pool trades in real time?


Are you using Polygon real-time data for individuals? I suspect if you're after more fine graded data you'd be looking for a data provider for "professionals". There are usually different offerings, one for personal use and one for business use ("professional subscriber"), but these market feeds are quite expensive.


I see. I have the "Stocks Advanced" real-time data for individuals feed. I didn't realize the "professional" real time feed isn't the same feed.


I suspect that customer service bot is incorrect. As also noted on this page[0], all dark pool trades are published to the consolidated tape, which appears to be part of the polygon API.

As an aside, the behavior you’re seeing might actually be causal- a large print appearing on the tape likely causes automated systems to widen out their quotes. Or alternatively, if the trade is through the NBBO, you’re seeing the top of the book (the protected quote) being swept in compliance with RegNMS.

[0] https://www.finra.org/investors/insights/can-you-swim-dark-p...


These numbers don't remotely pass a smell test. The same study claims 2% of Americans have been injured in a mass shooting, and cites 500 mass shootings a year.

2% of 340mm = 6.8mm injured in a mass shooting Conservatively assuming that's equally spread across all ages, and assuming a lifetime of 80 years, implies 6.8mm/80 = 85,000 people injured a year 85,000/500 mass shootings a year = 170 people injured per shooting

This is absurdly high - the Pulse nightclub shooting for instance injured 60 people.

It's obviously harder to analyze the number of people that 'witness' a shooting, but it also seems implausible that an average of ~595 people are witnessing each of these 500 shootings.

The problem here is that self-reported studies like this are incredibly unreliable. Interestingly, the same effect appeared in a pro-gun study, which cited an insane 2+ million defensive gun uses a year.


Try disabling everything labeled “suggestion” in settings. This drove me crazy too and pretty much went away after I disabled Siri and safari suggestions.


FWIW The data for Milwaukee appears incorrect - the traffic fatalities are for the county of Milwaukee while the density is for the city. Recalculating density based on the land area of Milwaukee county shows 3,934 people per square mile.

https://en.wikipedia.org/wiki/Milwaukee_County,_Wisconsin


I imagine it is quite close, the county of Milwaukee is essentially just the city. Even many of the suburbs are in surrounding counties


EliottM is right, the delta in land and population between the city and county is significant. Over 900K people in the county and 241 square miles compared to 96 square miles in the city.


Neat project but I'd be careful showing the Twitter (and Github I suppose) logo with the various colors. This is prohibited by their logo guidelines - https://about.twitter.com/press/brand-assets


Can they sue you for that?


They can sue for anything. Winning is a different matter. They generally just threaten with disabling your Applications using their API.


Oh no!


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