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I hasten to add that one bothersome drawback of the cheap 50" 4k display that I sit only a few feet from is that it's not curved. With a two display system, you can at least angle the screens to ameliorate that.

I am writing this response on a "4k" 3840x2160@60Hz (HDMI 2.0) 50" Hisense 50cu6000 Smart TV that I got from Target last Black Friday for about $250. Before the 4k@60Hz 42" Silo display that this replaced and before the 4k@30Hz 40" Seiki that that replaced, I used a two display system, which I...

R is a language for working with statistics. You are almost certainly referring to some library for R that interfaces to TradeKing's protocols. I have never used R, but I have adapted some trivial software in another language that did queries with TradeKing's protocols. The last time I looked...

I should also add one other possibility that I wish I had though of earlier, in case you ever find yourself in a similar situation. In the unlikely event that the bid-ask spreads are tight enough, gaps in price motion sufficiently small in pre-market that you wanted to trade, and only to the...

I realize that this is completely inapplicable in your situation, because it would probably take weeks to open and fund an account, but, if you had a strategy that you wanted to scale that required trading options outside of US trading hours, maybe you could trade foreign options on US...

You could also short the stock just before expiration so that the option exercise cancels your short position. Using Trader Work Station, you can do an immediate irreversible option exercise for US options during regular US option trading hours, so you don't even have to wait until Saturday...

If you just want to hold the underlying, you might want to consider switching from SVXY to XIV or the somewhat different and currently tiny VMIN. I realize that this would not help much with options, as in steve3001's situation, because there are no options for XIV and only a minuscule options...

"[...], but we do have historical data for the 2011 correction, where UVXY’s value went up 550% in a few months. In my simulation of UVXY’s prices that goes back to 2004, I show that that the prices of UVXY would have gone up 15X in the 2008/2009 crash." --...

With my deepest apologies, I retract the preceding paragraph. Money raised from a short sale of stock is not available for buying other stock because that money and apparently even a little extra is given as collateral to whoever is lending the stock. If anyone tried to implement the idea in...

It would not surprise me if the negative and positive ETF's somehow net out the bulk of their positions, but, what I think is surprising is that the second sentence cannot be true for ordinary daily rebalancing (although perhaps you were referring to the emergency scenario we have been...

Thanks, Sig. I was still allowed to edit that post, so I have added an acknowledgement of your point into it. Thanks for improving it.

I wonder what the settlement time on these options is. I would guess T + 1 day.

Hmm... The 8% annualized margin interest charged by some of the more expensive brokerages works out to about $2.11 for each of 365 calendar days or $3.08 for each of 250 trading day for every $10,000 borrowed (because 1.08 ~= 1.000308 ** 250 ~= 1.000211 ** 365). So, yeah, maybe it does matter...

I suggest you do a web search on the ETF name you have in mind with the word "prospectus", or, better yet search on https://www.sec.gov/edgar/searchedgar/webusers.htm . For example, from a little web searching for the SPXL S&P 500 3X leveraged exchange traded fund, I see tjat Direxion's June...

Even if we disagree about the relative weights of the reasons why, do we now agree that very deep in the money options are more likely to be rationally exercised early when the underlying's price rises, even without dividend effects, in comparison to options less deep in the money? That seems...

I had the following trades of one UVXY $1 call expiring January 19, 2018 (before the most recent reverse split). 2016-10-26 09:33:51 AM Eastern: shorted for $13.34 (UVXY open $14.06, high $14.29, low $13.52, close $14.13) 2016-11-03 02:13:51 AM Eastern: assigned (UVXY on 2016-11-02: open...

Do you mean that you submitted a market-on-close sell order and got filled at a price different from the close at 4pm Eastern time, or do you mean that you looked at the last trade price in the midst of the trading day, submitted a market sell order (or, more sanely, a limit sell order with a...

UVXY. There are many ways a market maker could hedge it, and its options market is one of the most liquid of US equities (except on days like today, in the wake of its reverse split before its new options have been issued, but I wasn't assigned on such a day).

In the United States, long equity options have a 100% margin requirement, which can be more than the margin requirement resulting from exercise, creating an incentive to exercise. I tried this experiment recently, selling a deep in the money call on a spiky ETF that does not issue dividends. I...

I understood that Scalperten was using demo software, but I think Scalperten was asking about live trading. I apologize if my response was unclear about that. Thanks for clarifying it for everyone. Also, thanks for the pointer about LightSpeed's order routing, and thanks for sponsoring ET.