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For historical stock data, there is another quality that may be even more important than their frequencies: whether the data are free of survivorship bias. I will define survivorship bias in the following section. Here, we just need to know that historical stock data without survivorship bias are much more expensive than those that have such a
... See moreErnest P. Chan • Quantitative Trading
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And on and on to the lowliest intern, who gets “When African American women between twenty and thirty who live in Los Angeles want to get something to go from Point A to Point B, and they have a device with connectivity, they will create an Uber account (measured by account creation).”
Matt Wallaert • Start at the End: How to Build Products That Create Change
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“that sheer amount of lesson or practice time is not a good indicator of exceptionality.”
(Journalist) David Epstein • Range: How Generalists Triumph in a Specialized World
The Sharpe ratio is actually a special case of the information ratio, suitable when we have a dollar-neutral strategy, so that the benchmark to use is always the risk-free rate. In practice, most traders use the Sharpe ratio even when they are trading a directional (long or short only) strategy, simply because it facilitates comparison across
... See moreErnest P. Chan • Quantitative Trading
.markets .implementation
It is about knowing what and how to observe and directing your attention accordingly: what details do you focus on? What details do you omit? And how do you take in and capture those details that you do choose to zoom in on? In other words, how do you maximize your brain attic’s potential? You don’t just throw any old detail up there, if you
... See moreMaria Konnikova • Mastermind
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Religious concerns had to be overcome, and physicians who believed pain was necessary for healing had to be enlightened. What’s more, a new mindset had to arise in both physicians and patients that consciousness could be safely altered in this new and unimagined way.
Jon Queijo • Breakthrough!
Our Framework posits that all asset classes are driven by common factors • Changes in Growth Expectations • Changes in Inflation Expectations • Changes in Risk Premiums • Flow and positioning • Idiosyncratic risk within an asset class or across countries
kaustubhs • Risk_Premium_201
Together with the fact that every task is accompanied by writing, which in itself requires undistracted attention, the slip-box can become a haven for our restless minds.
Sönke Ahrens • How to Take Smart Notes: One Simple Technique to Boost Writing, Learning and Thinking
That’s all a potential insight really is: the recognition of some potential split and the opportunity to move closer to the utopian end of the spectrum. A potential insight expresses the distance between those two universes and, once validated, allows us to start understanding the gap and how to design interventions that bridge it.
Matt Wallaert • Start at the End: How to Build Products That Create Change
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