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Well, if he/she started an informative thread, why do we care!?

It's been awhile since I've been involved with market data, but if you have any specific questions ask and I'll try to recollect :)

I subscribe to a service that uses similar approach to yours but he is very keen on rolling, which seems not to be in favor here.

I suggest you go to the source - CTS and NTDS specs. Each feed publishes up to 4 conditions per trade. These are combined to figure out which fields should be updated, although most are straight forward. The original feeds have flags to specify if last/high/low/volume should be updated, but...

Who that?

No, but I don’t find many videos that show how to trade large accounts.

Watch this video. I think he is too optimistic and not acknowledging the high risks he is taking with leverage and concentration (probably on purpose as he sells his services). Nevertheless, it’s probably the closest you will be able to come to what you want to achieve given the amount of effort...

Not saying you are wrong, but here is an interesting article on the topic https://images.aqr.com/-/media/AQR/Documents/Insights/White-Papers/AQR-PutWrite-vs-BuyWritevF.pdf

You need to subscribe to below and then when you request individual market data, add below tags to the request.

You need to subscribe to individual symbols, can't get all activity as far as I know.

If you buy options, I think you should expect may be 30% win rate, but probably less. But your winners should be pretty large. It’s difficult psychologically to trade this way, which was one of the reasons I wanted to join his service. It takes time to gain confidence trading this way, but...

I am subscriber to his service. I originally subscribed because my thinking was that UOA should work even when other things don't. But I can tell you that when market was hot, everything worked for me, day trading, UOA, premium collecting with bullish bias. Easy money all around :) But now...

I think UOA has become so widely accessible and used that there’s lot of pump and dump going on, especially with “cheap” options where it doesn’t take a lot of capital to generate a scan hit. It doesn’t mean that one cannot make money, just that it’s not based on detecting what big guys are...

Yes, but that is hardly an edge because as we know, market can stay irrational for a long time. Also, this assumes that Wall Street doesn’t have some inside scoop on the company/competition which presents some off-the-books risks. That is why Buffet prefers great companies at fair prices to...

Script based on what data? You mean scan within some platform like TOS?

Sure, I think Tasty guys call it “Keeping the dream alive” :). But sitting in a stock waiting to recover is not fun. You are subject to all kind of risks, including balance sheet deterioration. A fighting chance is all I need before getting stuck with shares. I can’t say I have much practical...

I don’t look at it this way. What often happens is that market has a sharp sell off and your put strike doesn’t seem so appealing any longer. You can buy the stock at much better price and benefit from move higher. So selling puts has opportunity costs, as it should since you are simply selling...

Well that is part of my point. You can’t get easily filled opening or closing. I think you lose the main benefit of selling puts vs. buying shares, imho.

Related to the above. Why don’t you roll to avoid assignment? In my mind, the only reason to sell puts instead of longing the underlying is the ability to roll. Also, I don’t understand the point of using illiquid options instead of using indices. When economy turns, it doesn’t matter how...

Yeah but if that original service costs ten times more, this could be a bargain (legalities aside)