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My understanding is that SEC wouldn't even know who the whistleblower is ... It's all done through lawyers.

Does your statement apply to hedging with options as well? In other words, if your edge doesn't come from options, can you effectively use options without trying to predict volatility? Or put another way - should people who have no edge trading options by themselves use them at all for any...

I wouldn't even bother for options ... Just have to forward test it I guess.

Not really. You need to find a match where they like what you can contribute and you like what you can learn from them. For example, SMB does equities but is branching out to futures and options. You can start a conversation with them and see where it takes you. I would not waste time on...

Have you thought about finding a prop firm so that you might establish long term relationship for future opportunities? Some have private chat rooms that they may let you in without opening account with them. If they find your contribution useful, they may even give you an offer. I don't...

MotiveWave?

Conditional Orders: The Great Liquidity Aggregator Campbell Peters TABB Group Follow | Profile | More Share As the US equities marketplace has grown more and more fragmented, conditional orders quickly are becoming the de facto method for buy-side traders to aggregate liquidity in a...

Oh, and can you define what scalping means for you as I think Robert must be referring to capturing just a few ticks.

Vs. Hello Jack and welcome. Could you please elaborate on this? I assume you like the micros because you scale in and out which is easier to do with micros. Also, have you considered using equities where you can reduce commissions if you provide liquidity? Is it just because you are more...

Looks like DAS has special set up with IB, so no need to run TWS side by side.

It's my opinion that PFOF is not the issue. It doesn't matter to me if the broker is sending orders to HFTs or trying to work them themselves ... what I care about is who is introducing latency in my order processing, how much, and why. Where do you think you will get better execution - a)...

I was just giving an example. You can't avoid this because brokers have no obligation nor incentive to reduce latency. They are not violating RegNMS, but RegNMS compliance does not force them to be reasonably fast(compared to HFTs or even peers). This is why many Buy Side firms use Sell Side...

You are correct, but you are forgetting that there are many automated traders and that your broker also uses data feeds and order gateways. When I ask my broker - how come I see thousands of shares traded but none of mine filled - I don't want to hear that it's because they don't have same...

Robert, during the financial crisis(or even tech bubble), I don't recall reading anything about margin requirements being raised. If every broker starts raising margin requirements when market falls, isn't that going to snowball into outright panic?

I guess you are not using stops in your trading and/or not affected by slippage. Weren't you the one saying how important good quality data feed is for day trading? We're all affected when National Exchanges provide PUBLIC information to one group prior to another.

https://www.reuters.com/article/us-usa-high-frequency-trading-lawsuit-idUSKCN1SZ1XO

Wow, this is crazy ... I haven't heard of other retail brokers doing something like this! https://realmoney.thestreet.com/investing/stocks/interactive-brokers-increases-tesla-margin-requirement-as-stock-sinks-14974323

Thanks, Matt. I also found more details on the blog section of your site, in case anyone else is interested.

What new protocol? You mean new version of old/existing protocol?

Matt, I am always curious why with so many platforms available, people invest time and money into developing new ones (seemingly reinventing the wheel). Would you mind talking about what functionality you felt was missing (or was sub par) that inspired you to build your own? Or is it that you...