Eliminating Tail Calls in Python Using Exceptions

August 23, 2019 | John Mount

I was working through Kyle Miller‘s excellent note: “Tail call recursion in Python”, and decided to experiment with variations of the techniques. The idea is: one may want to eliminate use of the Python language call-stack in the case of a “tail calls” (a function call where the result ... [...Read more...]

Tens and twos

August 16, 2019 | OSM

Only three months ago, market pundits were getting lathered up about the potential for an inverted yield curve. We discussed that in our post Fed up. But a lot has changed since then. One oft-used measure of the yield curve, the time spread (10-yea...
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A weighty matter

August 9, 2019 | OSM

When we were testing random correlations and weighthings in our last post on diversification, we discovered that randomizing correlations often increased portfolio risk. Then, when we randomized stock weightings on top of our random correlations, we...
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My strategy beats yours!

August 2, 2019 | OSM

Don’t hold your breath. We’re taking a break from our deep dive into diversification. We know how you couldn’t wait for the next installment. But we thought we should revisit our previous post on investing strategies to mix things up a bit. Recall w...
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Back to diversification

July 26, 2019 | OSM

In our last post, we took a detour into the wilds of correlation and returned with the following takeaways: Adding assets that are not perfectly positively correlated to an existing portfolio tends to lower overall risk in many cases. The decline i...
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Detour: correlation

July 12, 2019 | OSM

In our last post, we asked the simple question of whether an investor is better off being diversified if he or she doesn’t know in advance how a stock is likely to perform. We showed some graphs that suggested diversification lowered risk (or, more ...
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Diversification: fact or fiction?

June 29, 2019 | OSM

“Diversify, diversify, diversify!” Mantra, call-to-arms, or warning. Whether you’re an amateur or professional, a student or professor, a pedestrian or pundit you’ve been told that diversification is patently good when it comes to investing. Golly, ...
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