ElliotM
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...
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...
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.