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https://finance.yahoo.com/news/alibaba-group-announce-march-quarter-090000307.html Alibaba Group Will Announce March Quarter 2017 and Full Fiscal Year 2017 Results on May 18, 2017

Buy 100 WFC, Jun 16 50 Calls, show 5. The public will only see 5.

Looks like a bunch of MM all sending out he same markets on many exchanges. Dividend is next week and almost the cost of the put.

Yes, the Bid and Ask sizes reflect the number of contracts at the current stated Bid/Offer. If it is multiple listed, that total is from different exchanges. ES is a single listed product so the bid/ask is from one exchange. AAPL could be from 15 option exchanges. What symbol.

You are looking at many option market makers adding their own markets to the NBBO. They can move in and out of that NBBO very often as the stock moves. That is not spoofing.

I have asked our market data specialized to inquire with NYSE, NASDAQ and OPRA to see if we still have to report the use of APIs. I don't expect to get answer today.

Who else will trade with you? Most option trades are done with a MM unless you are in a liquid symbol like SPY, QQQ or AAPL.

What software do you use?

No, we don't offer data for back-testing. Our clients use third parties for that. We focus on the execution side of the business.

Yes, you type faster than me!!

In general, a market maker will trade with you when their system sees an edge. The open interest is only important if you expect to trade with other customer orders, not the MM. They don't care if they are opening or closing. What I do for wide markets, is determine the most I will pay for an...

May I ask what you wanted to do with the data, if you could find it?

I can't speak for IB, as they have their own rules. During times of stress, most reg-t margin rules don't change at most clearing firms as there is enough protection as is. I can see a cleaning firm look at a certain stock and not offer leverage at certain time, like a biotech. I don't expect...

http://www.cmegroup.com/education.html We offer futures but I can't give trading advice and our minimum account size to start is $25,000. Email me with your name and phone number if you would like me to call you this morning. Bob

It does not change over time. If a security is marginable, initial margin is 50% and maintenance margin is 25%. If your symbol is a multiple of another security like an 2X or 3X, then the cash requirement is a multiple too. For a short position the requirement is the same but you can't use the...

Hi jmiles301, I don't know if they will honor it as we no longer work with them. But you can try this 20% discount: https://www.lightspeed.com/education/trading-tools/ Bob

I just want to stay a sponsor as I enjoy this more than having a debate over politics.

I'd prefer not to state publicly so I don't get a response from my compliance. Happy to chat with anyone privately.

I have been in this business since 1981. I have an MBA in Finance. I understand the math behind options. I understand supply and demand, fear and greed. I have no idea what makes big money move in and out of sectors or the market. That part of the world does not make sense to me and at times...

No. No. Not in it's current form and maybe nothing this year.