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Is it ninja trader’s own broker business or associated with third party brokerage?

Thanks. I thought rest api is more platform friendly

I guess you mean c++ wrapped fix. Correct? I am using tws c++ api. It is platform unique that I donot like

You mean c++ Fix api?

I am currently using IB api, but I plan to use multiple brokers, so I need to choose an api which is easy to plant across brokers. I find there are two options, fix or restful api. which is better? fix protocol is old, and restful api is the future to go? which api has more brokers to support so...

it is very liquid, more than stock itself. the question is why the trading volume is not as much as the stock.

for 100 shares SPY, the commission on IB is 0.5 dollars. why 1 lot spy option is so expensive, i.e., 1.5 dollars at IB? anyway to decrease it?

option bid/ask size is thicker than iwm stock, but option trading volume is much thinner. why do not institutions trade option as much as stock? is that because option is more expensive to trade?

a potential profit for a successful trading system is dependent on the liquidity of the market. for stock iwm, the bid and ask size most times are only a few thousand shares, while its option is much thicker, in a range of hundreds of thousands shares. for example, spy has 10 thousands...

500 contracts need to pay $4000 commissions? that is too much.

what do you mean cable distance is normalized? if the server resides next door to the exchange, will it not connect faster than server 1000 miles away?

how do you know the stock will go down on monday?

i do not use aws server. i run from my home computer.

How could the Latency from Europe to USA is as high as 250ms? I ping Europe from states within 10-20ms

I guess you trade from aisa likely China? In that case fix ctci does not help you. You can use amazon cloud server to access IB. Typical latency to IB is 30ms from states

Sometimes primary exchange does not have nbbo and rebate is not same

Which instrument do you trade and how long is your holding time ?

ARCA will route your order to the exchange with NBBO

SPY is not called away.

i think it is quite tricky here. since option buyer has right but not required to exercise the option, it is foolish for call buyer to exercise the spy call at 302. but if the buyer does not inform its broker not to assign, by default all option in the money even of 0.01 will be automatically...