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Thanks! That led me to below : https://www.cboe.org/trading/nbbo-step-up "With HAL, Cboe quoters will match the NBBO within the flash period (currently 20ms) or the order will be routed to the exchange showing the best price."

Do you happen to have a link to the "Reg NMS-type" rules by any chance? I doubt very much that option exchange will route out a large juicy order when they can simply match it locally.

This is from theory, not practice, but I would watch implied volatility. Just like with stocks nearing earnings, IV should increase if "smart" money expect a large move. If IV is not reflecting it, then there was nothing known on the horizon. But if you are going to get out of the market every...

Hi, am familiar with the concept, but not the name. But I don't see how it applies to trading more sh*t. My personal opinion is that the authors don't have any good strategies (at least none they would be willing to share) so they are saying - oh don't worry too much that you can't build...

Based on his profile. You are saying this is a phishing post. I wouldn't send emails either.

He is from Spain, so maybe simply because of foreign language.

Can you at least be a bit more specific? Looking fo investors, developers, field experts? Broker of what instruments?

No, cannot afford the fixed costs :) Yes, but as retail manual trader. I do use the API, and I don't believe it is a problem. The problem will be on IB order handling side. I don't think they want piker HFT wannabe business, imho. Maybe if you have a large account they will try to accommodate...

Just curious what latency you are targeting? I would be surprised if IB is the right choice no matter what API you use, but maybe depends on account size.

There's no depth of book in options. So exchange just routes to all regional exchanges. I don't know, so it's more of a question then a statement. Equities are only protected at NBBO, so if you send marketable limit order larger than protected size, the rest will sit on exchange's book. If you...

I assumed we were talking US equities. But even with options, I cannot imagine exchange holding on to the order and re-routing it. You must be talking some functionality offered by the broker, not the exchange.

You are missing the size ... Only size up to displayed NBBO is protected. The rest is not protected/routed. The rest of your order will execute at whatever the offers are at that exchange even though other exchanges may have better prices. That's why when you chose SMART route, the broker will...

They let you down by being slow at resetting account? What's the hurry? I don't understand why people don't just simply paper trade using free platforms or tools or pen and paper. Once you prove to yourself you can pass with ease, sign up. Win-win.

Maybe I missed it but did you mention how much you add as it goes against you? If you add small increments, makes little difference. If you add a lot (like doubling), you are sinking and adding weight. This is how bad habits form. Trust me :)

My 2c on this is that one needs to distinguish BOs due to a catalyst vs. noise. I'm talking daily timeframe and higher. It's not that BOs are prone to fail, but it's that most of them break out due to noise and run out of fuel. Of course even when there's a catalyst, you may end up missing or...

Aren't these still reported on the time and sales? Are we talking about below or something else entirely?

Success attracts attention in any industry. No broker can Force you to disclose anything unless they suspect illegal activity. Many use multiple accounts to hide how their strategy works from what I have read. How successful is that "first hand" guy of yours? I thought brokers aren't even...

No idea, but since it's EOD data I assume less :)

https://tradevela.com/news-events/article/end-of-day-tick-data-files-now-available-via-superfeed

K, I am not really understanding what the point of the thread is. You are not sharing how you are using it. Are you expecting people to share how they are using it or you want them to ask you specific questions? While you are correct to say that everyone has their own methods, there's a value...