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It's worded in a roundabout way, but based on the example given it actually seems to mean that you can't short more than 10% of NAV in any single position. So as long as all your shorts are under 10%, it would be business as usual, not consuming more margin.

He doesn't come across well in the interview. I think the problem is not so much the face, but the embarrassing prevaricating answers combined with aloof facial expressions and tone. It feels completely inappropriate for the situation. He doesn't acknowledge the outrage, and doesn't seem to care.

Can you or anyone else give an example of how this would work? How do they justify piercing the veil for a margin call? Unless the operator somehow committed fraud in their agreements with the broker, it seems like the broker should eat the losses here as they agreed to let the LLC trade without...

The amount of tax estimated to be raised from this is 777 billion over 10 years (avg=77billion/year): https://www.cbo.gov/budget-options/54823 The total revenue of the HFT industry is around 1/10 of that. For example Citadel and Virtu are the two biggest players and their revenues were (3.5b...

I am curious what would happen if FTT was actually passed. What kind of loopholes will be available? Can all trading be moved outside of the US? Lots of smart people in this industry, so I expect they will come up with something to allow trading to continue.

Your posts are getting increasingly incomprehensible with every reply. You appear to be accusing me of having errors in my posts, but you don't give any examples. Other than that, I'm not sure what point you are trying to make.

Unless I'm missing something here, this is completely useless. You can't do anything with such a graph. What is informative about short data is things like short interest %, days to cover etc. Preferably computed using the most complete, accurate and up-to-date information. Then to identify...

I am glad to see nxcore is modernizing their web presence. I hope you will add fully transparent pricing information to the site in the future. Having to contact sales to get pricing is old school and always feels a bit yucky.

You seem to think PFOF is a good thing. I guess you know nothing about market making. As I said, the current structure is leading to a monopoly. Think about it. It is impossible to do a startup that buys order flow. Do you seriously believe it's a good thing if citadel is on the other side of...

So the world's biggest market should operate on the same principles as a mom and pop home improvement store? I don't think so. Discrimination should be illegal. PFOF is bad for other reasons too, for one thing it is naturally leading towards a monopoly in liquidity provision. Think about how...

The idea that you can get different fills based on who you are (your past trading activity) is pretty gross. PFOF should be illegal imo.

Tragic story. Negligence seems plausible, but wrongful death is a real stretch here IMO. Robinhood's negligence caused him to think he had massive losses. This is totally different than causing his death. The decision to suicide was his alone, and likely influenced by other factors like...

I guess blind person can drive a car too because anyone can just turn the key and press the gas? If you don't include a proper measure of success in the definition of being "able to do something", it gets silly quickly. True, predictability increases, but most people would call 10 year holding...

Can't comment on Optimal F, but Kelly is mathematically optimal in a casino-like setting where the outcomes follow a known fixed distribution which is the same for every iteration, and you can play a very large (unlimited) number of rounds. In trading, the risk and reward are constantly shifting...

Yeah, I don't think you are understanding the info :) How much do you know about portfolio theory? When trading portfolios or baskets, the trades in individual symbols need to have some synchronization between them so that various constraints on risk and funding are maintained during the...

another one: https://www.tradewex.com/Home/Execution#algorithms

I think I found something relevant: https://www.dashfinancial.com/media/dash-financial-technologies-launches-advanced-portfolio-trading-solution/

I think I should have said "algorithmic execution" instead of algo trading. "Algo trading" seems to often be used as synonym for automated trading. AFAICS the capitalise.ai and alpaca stuff is for basic automation and backtesting. I don't see anything about the standard order types like vwap...

Do any brokers offer portfolio-level algo trading? Most that I've seen (such as IB) only offer algos that work on each symbol individually. An example of what I'm looking for would be Vwap or TargetClose a whole portfolio while maintaining market neutral constraints.

what is the definition of second tier latency and which companies provide this for 1-2k? please list all the names you can