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This cannot be cheap. Did you ask how much they charge for Colo and their proprietary market data handler?

Could someone explain the main benefits of using IB insync? Is it mainly because you have Ewald to help? Is it async functionality?

Curious, have you tried getting a fill at those prices? Lifting 1.31 in your example with a limit order?

Can you name a few?

DAS will have the ability to execute orders at TDAmeritrade at zero commissions?

Would you mind sharing what this means?

Yeah, but it's a form of cherry picking. I want to see both good and bad. How a trader gets out of a trade gone wrong is the most important part - the part that deals with risk.

I don't think I have ever seen them post a live trade. But they sure do talk a lot.

Coward

True, position sizes?

Stops?

Does this imply API as well?

It's possible to subscribe to real time news and receive everything (not just per symbol). It's not much different from any other functionality. I don't know what is available, but you can probably do it with the provided sample program. https://interactivebrokers.github.io/tws-api/news.html

Specifically?

I believe paper account is using your real account's data permissions(I haven't tried getting data from sim). Yes, 100 lines means 100 stocks simultaneously. By 'reference data' I mean it's not exactly tick by tick . For example, it does not match exactly to what you see in Time and Sales...

Right, the above three is the full NBBO for US Stocks. I have not used historical data, but I believe you should have everything you subscribe to for real time. The number of lines - you either need to pay more to get more, or trade enough to qalify for more. Generally speaking, the data is...

Weird? https://www.cnbc.com/2019/06/15/the-first-non-transparent-etf-gets-sec-approval-heres-how-it-works.html https://www.ft.com/content/8d880f4a-6031-11e9-a27a-fdd51850994c https://www.marketwatch.com/story/get-ready-for-a-new-flavor-of-etf-non-transparent-2019-11-15

I mean, after so many years, now he starts hedging? Maybe he is sensing a top? Personally, I think many of his clients are oversizing, so he is coming up with a way to make sure they don't blow up. That's the dilemma, how do you make enough money to justify the effort while making sure you...

Well, I was always curious how premium sellers manage to scale up. Below is a big shift in how Options Alpha has been operating(according to them). He says this will allow him to scale from current 11% (eleven!?) to up to 30% allocation. This is just tail risk hedging. What do you guys think?

Common guys, it's IB. You are as likely to get misinformation. @0x00, I think you are missing Network C - NASDAQ. Don't know about #3. Also, you do realize that there's a limit on number of symbols you can subscribe to?