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Let's say the stock goes to $400/share (you can do the same with stock going to $300, just use the puts instead of the calls for your calculation). You lose $50/share on the $350 strike you sold ($400 - $350), but the call you bought on the $360 strike is "protective" meaning it caps your loss...

You are correct. Your costs are the cost of purchasing the outer legs and your profit is from the sell of the inner legs. Of course there's commissions, exchange fees, regulatory costs, etc as well just like with any other options trade. Generally, with an iron condor you get to pick your max...

I have no idea, but if IB isn't being paid by Citadel, then I'd agree with your assessment as far as why would IB care? Perhaps Citadel has made it a requirement for access to Citadel's trading system and IB believes that access to Citadel's trading system is beneficial to IB. What I wonder...

I would assume that Citadel is paying IB for order flow as they do many other brokers.

I'm in charge of development for a small company (< 100 employees). Last year some time I was given the OK to hire some additional devs for my team. It can be difficult to know if someone is just a good interviewer or actually knows how to write code. I also understand the problem with asking...

While the creators of the coin are mining more, thus far they've kept it at a rate that's low enough that the holders of the coin don't mind as its benefits outweigh this particular negative. The creators of this coin aren't stupid. They understand that if they created too much, too quickly...

I'll give my bullet point summary of this coin: Benefits: * it's been around for a while, wide use, and massive market cap * anyone can mine / approve transactions * because transaction approval is only shared with peered nodes in the network, there's very little network overhead (a complete...

Even with CME's Market By Order (MBO aka level 3) book data, you still don't see the entity associated with an order. A single entity may even have multiple orders at a given price point. Because of the ambiguity here, sure you'd know if there was some large order that it was a single entity...

That's going to depend on the exchange and I'm not an expert in the various trade message formats used each exchange out there, so I can't say definitively. However, as an example, CME's MDP trade execution messages do not include identifying information about the parties involved in the...

Possibly non-retail algo traders messing with retailers. They don't pay broker commissions like you do, so they could do this kind of thing to get you to lift your order. Look in to if you can do an AON (All Or Nothing) with your software, broker, exchange, and underlying. I'd imagine that you...

Your screenshot is showing an option that is priced in penny increments (not $0.05 increments as I was assuming as the OP did not specify the underlying or the exchanges he was getting quotes from). The reason you have no bids and are showing no bid size is that there are $0.01 asks. It's...

Approximately what was the bid? The reason I ask is that there are some cases where quotes < $0.05 are not shown, but they do exist on the book. As such, it's possible there really are some bids (and perhaps the price on those bids you saw were lowered), but you just can't see them because...

Continue to get a phd in physics and you'll likely be surprised at how relevant it is. I think you'll find that firms looking for people to develop algorithms need to posses the ability to solve problems that either nobody has solved before or in ways nobody has solved them before, which is...

I want to start by saying that I am by no means a patent expert, but in a previous job I worked on developing technology patents. I was the technical person, I worked with the CEO who was non-technical, and the patent attorneys to write the patents. To ensure they met certain criteria to...

What you've described can be generally classified as "social sentiment" and you're already a few years late on that one. That said, the implementation of such a model is much less precise than say a pure arbitrage where the values are concretely known. With regards to social sentiment, the big...

As far as I can tell, the key to the anti-deflation argument is that people will delay purchasing because the dollar will be worth more later, therefore will represent a better value proposition vs purchasing now. I believe this is pretty clearly false -- and not just for necessities (I did list...

In simple terms, deflation is when your dollar will get you more later than it does now -- that the value of the dollar effectively goes up with respect to the good or service you're purchasing. Computing technology (desktops, servers, laptops, tablets, phones) gets cheaper for the same...

I'll play devil's advocate to an extent. Consider the question from the contraposition: If "gut feel" is not important, then why is it that we see so many firms not performing as well as before? ;)

If you hover your mouse over say "24 minutes ago" it will tell you the time it was posted at 1 minute resolution ie "Jul 28, 2017 at 1:21PM". Not as convenient as being the default, but the point is that the data is accessible without too much effort.

OK yeah one of the brokers I used was a purely HTTP/HTTPS protocol. They used HTTPS for authentication, got a token, and then made a websockets style plaintext HTTP request to the market data servers, so it was actually pretty easy to reverse and get data. It was a very wasteful protocol because...