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The validity (or invalidity) of Fib retracements to a particular case is primarily based on what the crowd is watching (which in the final analysis is true of all TA). So of greatest importance is picking the same high/low in the same timeframe that most of the trading crowd is looking at...

Old style pivots and other such simplistic calculations that are in a lot of books are so old that they'll usually not work as you're expecting. The large private firms ditched those old pre-PC formulas a decade or more ago (one reason these "secrets" are showing up in books now) and they use...

"Easy money" until the deal falls apart - ask the guys at Goldman, et al who've taken serious baths in the last couple of years unwinding positions on big M&As that failed to close at the last minute. When they work, it's "easy money" - when they don't, it can be expensive.

The futures and the cash index are synergistic. Movement in the cash index - either by way of large buying/selling of one or more index components or buying/selling of large volumes of the QQQs or SPYs - will cause price movement in the futures (often through the arbitrage mechanism)...

There is a certain supply/demand impact on ETF pricing, but a combination of outright arbitrage and the ETF itself buying/selling the underlying equities tends to keep the prices within a margin of error. Example: as I'm writing this, the QQQ is trading @ 36.83 x 36.85 and the NDX is at...

Use a program like NISTIM32 to set your computer's clock to the NIST time. The program computes the link delay and factors it into the setting.

newbie - apparently still a disconnect EVERYONE understands risk-based position sizing - it's been done FOREVER. It's NOT unique to the guys you're talking about and it's NOT the issue. Is a trader to makes two 1000 share traders and makes $1 on one and loses $2 on the other a net loser -...

newbie - your math is still off Risk-based position sizing is hardly new and it's certainly nothing unique to the guys you're talking about - although apparently calling the "units method" has you believing it's something new that no one here understands. The problem isn't with everyone...

newbie - is this the result of schools teaching "New Math"? If you lost $500 on a 416 share lot and made $1000 on a 1000 share lot, your net $/share is ($1000-$500)/(1000+416) = $500/1416=+$0.35/share, NOT -$0.70/share Rendering results into some fictional "units" does nothing to convey...

AAA - totally agree with you. All the BS and "it's such a difficult job" whining aside, it's simple - if the op can't manage the stream properly, they shouldn't be running a for-fee service. I take your reference to "who's your daddy" and also agree there. I tried those bozos for a while...

nitro and rtharp - RE: conversions at retail brokers: It depends on the broker but for instance Mr. Stock and a few others margining systems DO know that the combo position is essentially riskless. But they then have to follow the SEC guidelines for maintenance margin on such positions...

terrh - you should split your data set into a backtesting and forward testing set. You backtest/optimize over the backtest set and then run a validation run on the forward testing set. Since the forward test set would normally run into current time you'll have an idea how the system will...

dlu9024 - Cute (albeit seemingly of likely little practical use) gauges - looks like the Myst/Riven programmers are now doing trading software. Note sure what "market index buyer/seller ratio" you're referencing though. My read of their website makes the particular "gauge" that I think...

Pabst - the CME website shows ND options traded on Globex. Each would be equivalent to 5 NQ options (if they were trading NQ options right now). Another alternative are potentially MNX (mini-NDX) options instead of QQQ options.

Dave - FYI, I've actually got the handbook those guys sell with the so-called Camarilla Equation. I tested it out a couple of years ago - might as well throw darts at a price chart. Have yet to find anything that makes visualizing support/resistance clusters easier/better than Trade...

Sabena - OptionsXpress.com also has a $1.50/contract commission with $14.95 minimum. So if you're trading 10+ contracts at a time, it's pretty good. If you trade less than 10 contracts usually, IB is probably the lowest rate you'll find.

Depends - using support/resistance definitely works. As far as the old (many decades old - before easy access to computers) pivot point formulas you now find in books or referenced on websites, they've been routinely replaced by more and more sophisticated computerized methods by many of the...

I don't think you'll find anywhere to just show you ISLD T&S. The consolidated T&S normally comes out with the exchange (not the ECN) that the trade occurred on. Quote.com Qcharts can filter T&S by exchange - but you'd have to be willing to take all NASD trades (regardless of ECN) - you can...

hapaboy - not quite that simple usually. Just breaking above an intraday high isn't necessarily enough of a reason to go long. Depends on what the overall support/resistance landscape looks like. For instance, let's say that the first 30 minute intraday high is 40.60 BUT a key resistance...

Gene - your example of pre-market BBH spread is interesting but not all that indicative. I don't see any BBH pre-market trading and there are a bunch of stocks that routinely have weirdly huge spreads pre-market as a function of how the specialists/MMs are setting up before market open...