If There’s Liquidity It’s Not A Short Squeeze

I’m seeing a lot of articles (e.g., here) warning about a possible short squeeze in volatility.  At the risk of being a curmudgeon, it appears to me that people don’t know what a short squeeze is. Sure, if you’re short something that starts going up rapidly (e.g., Achman with Herbalife), life is not good. There’s a positive feedback loop when people closing out their short positions have …

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Scaling the Sharpe & Sortino Ratios For Daily Returns

The Sharpe Ratio      The Sharpe Ratio is one of the more popular ways to evaluate an investment for risk as well as for returns. Assessing the risk of an investment is not easy.  The Sharpe Ratio won’t protect you if the provider is dishonest (e.g., Bernie Madoff) or if historical patterns change (e.g., default rates on AAA-rated mortgage-backed securities).  However the ratio does factor-in historic …

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Software & Stock Exchanges—Not Skynet Yet

A week after the Nasdaq’s 3-hour shutdown in August 2013 the exchange published Preliminary Findings on the outage.   I’ve extracted some sentences: On August 22, the Securities Information Processor (SIP) received more than 20 connect and disconnect sequences from NYSE Arca, each of which consumed significant resources. Available capacity was further eroded as the SIP received a stream of quotes for inaccurate symbols from NYSE …

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The Modified Davis Method, by Frank Roellinger

First posted September 11, 2013 INTRODUCTION Always interested in alternatives to buy and hold, Vance has generously allowed me to describe my stock market trading method here, and to post its buy and sell signals as they occur in the future.  This information is for educational and entertainment purposes only, it will never be a recommendation to buy or sell anything.  But I believe that …

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