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Obviously it doesn't change, but the information that impacts the stocks and hence the SPX flows constantly, hence by the time the stocks open the next day, the prices change. In other words, you don't seem to grasp the point that the world doesn't stop when the US stocks close and whatever...

Well, essentially, yes, but Porsche has the cash-settled options not the actual shares so there are more shares available. However, nevermind that, it is absolutely obvious that Porsche caused the short squeeze by announcing that it held directly and indirectly (through options) around 74% of...

It could be that their risk management department may require more than 100K or whatever the amount account to be able to sell options, despite the fact that you are not selling nakeds. That's a common problem with brokers that do not specialize in options and have trading levels with specific...

They wanted to push the price up so they can make a killing on the call options they have/had, and now the price will fall down so they can buy VW at 200 or whatever. I bet they've already locked in their gains on the options and now they will essentially buy VW for free as the gains on the...

You really are naive, aren't you!? First of all, SPY is an ETF that follows the SPX so the value of SPX is not conditional on SPY's trading! And secondly, there is absolutely no reason for the ES to trade close to the SPX when it's closed. Once the stock market closes the flow of...

Porsche to Settle Hedging to Smooth VW Share Price If this whole thing is not price manipulation by Porsche then I don't know what is.

SPY has a close relationship to the S&P 500 cash index (SPX), which is obviously closely related to the ES. However, the ES doesn't have to go back to SPY Friday's close when it opens on Monday. SPX and ES are kept closely together by the arbitrage and so is SPY when it's trading.

Can you provide a link? I've never heard of WRAP, nor can I see anything "wrong" with AEM options.

I was in NYC this summer and I abosutely loved it as well!

Exactly, the options were exercised regardless of the account size.

That's whole point of options, you don't need that much money to control those 1600 shares, and that's why IB sold the shares, the guy didn't have a huge account and the 448K worth of stock caused a margin call and a forced liquidation.

Based on your question, you don't seem to have a good grasp of what it means to be delta neutral! Unless you are using futures options, you can add up the deltas across expirations. So just add up all the deltas on the short side and then go long the same amount of deltas. If you ARE...

A straddle is a simple bet that the market is underpricing the move. If the move is more than expected then a long straddle makes money, if not then it doesn't. So just because options are expensive doesn't mean that a straddle cannot be profitable. It's all about expectations (implied...

Before trading VIX futures/options I suggest you really educate yourself about them because they are the most misunderstood products. That is, the spot VIX index has very little to do with futures and options on VIX.

:D Good one!

I'm pretty sure we had an overnight limit down move more recently than 1997...

Ninjatrader is a trading platform (aka front-end). It's just a piece of software. Mirus, on the other hand, is a futures broker. However, you first need to clarify whether you want to trade VIX futures or VIX options. Based on your handle one could assume that you are talking about options...

ICE is an exchange, unless there's a broker that goes by the same name.

No, you don't have to have a PM. The margin on naked puts is what Nanook mentioned.

You may wanna make your question a bit more specific as it is not really clear what you are asking. To calculate your gain/loss on any instrument you simply deduct your purchase price from your sale price, and it doesn't matter whether you go long and then sell or go short first and then buy...