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What a great post! Read this one over and over. Skill, effort, and optimism can take you far in many fields. Let me add what many successful people often say -- choose a career that you love, because that makes the effort part easy.

Standard deviation is often expressed as a percentage. Sharpe ratio is not a percentage.

Over the past two weeks, there is one simple thing that has been bugging skeptical macro observers: namely the paradox of i) just how ugly the European funding and liquidity situations have gotten, on the one hand, confirmed by the blow out in French bond yields (the French-Bund 10 year spread...

"Naked came I out of my mother's womb, and naked shall I return thither: the Lord gave, and the Lord hath taken away; blessed be the name of the Lord." Job 1:21

Any idea how sensitive the results are to using opening (9:30am) prices vs. same day closing prices? I ask because one wouldn't be able to use your system with open end mutual funds, since the only available price is the 4pm NAV. This would be relevant if someone were interested in using your...

Chandler's paper loss is well over $100,000,000, and his position was established after the Muddy Waters report. It is difficult to understand.

I've been a satisfied Interactive Brokers customer for a few years, but recently opened an account at Lightspeed to compare. Here are the issues that caught my attention: Lightspeed has no GTC option for stock orders (which is strange), but that's not an issue if you only daytrade. I do some...

http://dshort.com/ Neat, unique charts

No doubt. My comment was meant to elicit further information. Talon has been quite forthcoming after all.

Hmmm, this seems a bit inconsistent with the short-term nature of the strategies you've discussed most here. I guess you have a staple of longer-term strategies as well?

They can short. See TFSMX, for example. Most choose not to.

Suppose a fund wishes to sell a large number of shares of a particular stock. If they can afford to be patient, they would want to sell it gradually to minimize price impact. That is an ideal situation for a computer algorithm, as it can be programmed to transact the order over whatever time...

Certain computerized trading algorithms have a quota, e.g., trade a minimum of 1000 shares every 15 minutes. If the algorithm has not reached its quota as the end of the 15 minute time frame nears, it accelerates its trades.

Quote from the book, "My responsibility, since I manage a mutual fund now, is to my clients. It's no longer my responsibility to go on CNBC and tell people how we do it."

Does anyone know which mutual fund John Murphy manages? In the recent book, The Heretics of Finance, he says he now runs a mutual fund. Was interested in looking at the fund's performance, since it must be managed with a heavy dose of technical analysis.

Yahoo data are survivor biased. Especially important issue these days.

I had three in mind, e.g. 20-, 50-, and 200-day. Wasn't sure if 20- > 50- > 200- was considered much more promising than 20- > 50- < 200-, or if there are particular points when one is crossing another that are thought to be strongly bullish (e.g., 20- crossing 50- vs. 20- crossing 200-). My...

Could someone please point me to a reference for how to interpret the relative position of various moving averages? I assume it is generally bullish to have a shorter-term moving average above a longer-term moving average -- is there more to it?

My busted trade from today: 9:35 Buy 1200 MI at Pegged Bid (Limit: 21.00) on ARCA - Reserve(Show=100) Executed 6bb22f52-c6-00gm 9:35 Busted: Bought 100 MI at 18.100000 with PSE-LA-EBAYTA (order 6bb22f52-c6-00gm) Deleted 6bb22f52-c6-00gm-2 9:35 Busted: Bought 100 MI at 18.100000...

Thanks for the help. The efficiency ratio appears to do the trick in most instances. However, suppose a stock goes up 20 one day and nothing for 19 days, compared to 1 each day for 20 days. These two have the same efficiency ratio, right? I guess a combination of the efficiency ratio plus a...