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I don't understand the language at all. What company is this and what is their role. Prime Broker, Hedge Fund, prop firm, FCM or just a trading group(Non-BD)?

I think I would have accepted the 12:10 if I could flip the coin, even if it was once, knowing I need a bigger sample for the odds to work. It was only $10. If it were $100, I would have wanted at least 10 bets, not knowing the math above.

Am I the only one that had to look up the word "innumerate" and then the description of the Kelly Criterion?

I'd like to see the response in NYC. "let me see the 10 bucks", then take it and run while you yell "sucker".

What if it were your coin and you can flip? It was not a scam. It was to shows people's aversion to risk and losing money.

He had me at 12 for 10, so I would have been pissed too!

I'm guess almost 100% of members here would take this bet after they pass $10 for $10. I forget sometimes how risk adverse people are. Bob

I should have said execute, not code. Good luck.

I would suggest that you only enter trades that you feel have a positive expectation of profit. That means that after you do your analysis, you need to protect your capital when you are wrong and give yourself a chance to be right. After that, I'm not sure what is the best way to code that.

I would re-exam your limits. If your max loss is 4 vs max gain of 2, you have to be very right all the time. I would consider reversing them.Keep your losses small and let your profits run.

For risk, the Silexx Obsidian Platform we offer has a very nice risk module called Risk Radar. (See below from their website). For "insight into your trading performance," we have contracted with Nirvana Solutions that provides a reporting package with many features including the ability to view...

The reality is that arbs like that don't exist for more than a fraction of a second. You need an automated system to take advantage of it and it's likely someone else will be faster. However, I have clients that rebate trade options. The rebates are less than a penny. I think there are many...

Those prices might have been from different exchanges with some customer orders that no mm wanted to match.

Eight cents vig on a non-risk trade is a lot of money. When I was a mm I'd do it for .03 until my server broke.

It is my understanding that expiring SPY option stop trading at 4pm est, not 4:15pm. Other SPY options continue to trade until 4:15pm. In fact when option stop trading, the last market at the EOD time, 4pm, is frozen and can't change or be traded electronically. I have not looked at the time and...

My suggestion is to avoid these online tools for this purpose. If you don't have a live account with a broker that can offer these greeks, open a paper account at one, or a live account and fund it enough to have access. That way you won't have to make adjustments for the inputs.

For that put, I see -.08 with the stock here, today.

Sorry, I calculated that wrong so I deleted what I posted.It would be easier to provide a current value. Time to expiration can make the displayed value different.

What is an example of the option you are checking? If there is very little time to expiration, like today, some platforms don't properly calculate fractions of a day or ignore them completely. In other words, one thinks there is 100% of one day when another will show 15% of the day left