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a person can become a doctor, lawyer, start a business, ... It is what you give up to do something else. If you have no opportunities then might as well try everything; nothing to lose

better is to determine your opportunity cost. lower it is the less opportunities you probably have

go to the source: sec.gov polling this might be how those who sell the free results to unsuspecting users do it. https://www.sec.gov/cgi-bin/browse-edgar?action=getcurrent

tempest in a teapot

zero

i like scaling in for investing/asset allocation. Commissions are zero

why 10 deltas? How does 1000/100 give deltas?

if you include derivatives then there are an infinite number of instruments

companies do not offer options. some might offer warrants , convertables, preferreds, various debt

the 10X person is still being paid less when normalized for productivity. should be billing 40/hrs/day

the post is Is delta independent of vega? not is delta independent of volatility

they're all first order derivatives. they're independent

implement "Application" with your logic https://github.com/fvmt/quickfix-python-sample

it is real life:p

depends on the exchange. And it's not "A stock is trading at $10" it's a stock traded at $10. there are buyers and sellers and priority. When a buyer is willing to pay the same or more than a seller (vice versa) an execution occurs

tl;dr get a FIX engine implement its interface apply your trading logic No matter what protocol, sdk, api used it's pretty much the same. Everything mentioned in your post about FIX doesnt apply to you and the engine handles or the paid developer will read docs and do.

you dont need someone with fix experience. The person will use an existing fix engine (like quickfix); not write an engine. All they need to do is implement an interface that handles callbacks and send orders or requests. Even if you're not using fix you need to do the same thing

https://github.com/topics/quickfix-python done

long inflation? you mean inflation will persist or go higher? If so, then sell bonds and credit and get out of cash. buy treasury or stir puts

institutions: infrastructure, credit lines, market making on a number of asset classes, fees if they sell something retail: think they run predictive algos what would tracking traffic to a page or exchange offer?