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About Vangelis

Vangelis has a B.A. in Economics from Cornell University and an M.F.A. in Film producing/financing from the University of Southern California. After the 2008 crisis he devoted his time to researching, trading and blogging about quantitative strategies. He has built, run and tested literally thousands of trading systems using Matlab, Python, C#, QuantShare and Amibroker. His "Sanz Prophet" quantitative blog has been part of the "Whole Street" quant blog aggregator since inception. Vangelis is series 65 certified.

Enhancing Harry Browne’s Permanent Portfolio strategy using ETFs and monthly rebalancing

Enhancing Harry Browne’s Permanent Portfolio The Permanent Portfolio is a simple, diversified portfolio You can construct it using 3 ETFs: SPY, TLT and GLD We enhance it by allowing variable allocations and monthly rebalancing We offer a free subscription so you can implement it in your own account including 401k or IRA  What is the Permanent Portfolio by Harry Browne Harry Browne’s intention was to find a solution for the money “you need to take care of you for the rest of your life”. He called it the Permanent Portfolio [...]

The Logical-Invest newsletter for February 2019

Our top 3 strategies this past month: Leveraged Universal Investment strategy with +7.5% return. Maximum Yield strategy at +4.3% U.S. Sector strategy (free to subscribe) at +3.1% News: Alex's new post describes the process of blending Portfolios (rather than Strategies or ETFs) using the Portfolio Builder. Bouncing into 2019 Three fundamental trends to watch as 2019 unfolds: The first trend includes the reversal of QE in the U.S, the end of the asset purchase program of the ECB and the decrease of liquidity of most other major central banks. Less money [...]

The Logical-Invest newsletter for January 2019

Must reads: Frank Grossmann’s article “How to Hedge in Times of Market Trouble” (Seeking Alpha, LI Blog) 2019 strategy updates (LI Blog) Protecting your money After almost 10 years of a continuous bull market and 2 years of exceptional growth (2016-2017), 2018 was the first year that the SP500 turned negative. Apart from the dollar index, most asset classes also fell. To make things worse, the S&P500 dropped -20% from the September highs during what is traditionally the best 3 months of the year. Although unfortunate, it does create a rare [...]

The Logical-Invest monthly newsletter for December 2018

Logical Invest Investment Outlook December 2018   The graph below is from a recent Bloomberg article entitled "A Brutal Global Market in 2018 Has Just One Champion". That one champion, according to the article, was Treasury bills. It goes on to say: "By one simple measure, this is the worst cross-asset performance in more than a century". Below you can see 89% of all assets had negative performances year-to-date (as of Nov. 22). This may be an exaggeration but it goes to show we are in a difficult market. Volatility is [...]

Fail-Safe Investing – The “straight” BUG with no leverage

In a previous post we introduced our new investment strategy, the BUG. There has been a lot of interest but also some concerns when it comes to using leverage. We are introducing a version of the BUG for non-leveraged accounts. In this version we allocate amongst 6 ETFs: SPY, TLT, GLS, CWB, TIP and PCY. Again as in the original strategy we use these heuristics: Timing (using a simple average rule), Volatility Targeting (we reduce exposure to more volatile ETFs), Momentum (we reduce the size of the worst performer and add to the rest). We don’t employ short term mean reversion and we only trade up to 4 assets.

The end of the turn of the month effect? Strategy and re-balancing during end-of-month

Historically and up to 2013, equities have exhibited a positive bias during the end of the month, called the turn of the month effect. Is the turn of the month effect still effective? Here is an turn of the month effect example of buying the SPY etf on the first down-day after the 23rd and selling on the first up-day of the next month . Trading is at the same day close. Turn of the month effectinvesting has been well documented in academic papers as well as blogs. The [...]

Logical-Invest review @ Daily Fintech

With a lot of hype about FinTech these days, we´re happy to have received a positive review from one of the most important FinTech blogs. What is FinTech? Here the definition of FinTech by Investopedia: Fintech is a portmanteau of financial technology that describes an emerging financial services sector in the 21st century. Originally, the term applied to technology applied to the back-end of established consumer and trade financial institutions.             A review of Logical Invest by Efi Pylarinou @ Daily Fintech "Logical-Invest offers actionable portfolio [...]

Commitment of Traders: The bigger picture on investments

We often we concentrate on U.S. indexes and Treasuries and miss the bigger picture in our investments. Here are some interesting charts of the Commitment of Traders to remind us of the current state of the market and keep track of our investments. Keep in mind that unlike equities, forex and commodity prices do have a strong impact on the real economy and imbalances are hard to bear by the respective economies, thus affecting our investments. Commitment of Traders (COT) help to track investments The bottom pane shows Commitment [...]

The NASDAQ 100 Meta-Strategy – Stock Selection and Compact Meta-Strategy

Intelligent Algorithms run two prallel sub-strategies. Meta- layer chooses between the two sub-strategies based on current market conditions. Variable allocation to Treasuries provides protection from large drawdowns. This strategy is a good fit for investors that want to invest intelligently in the U.S. equity market as well as for stock-pickers looking for a rules-based growth strategy. The strategy can also complement our existing strategies and can work well with our more conservative strategies like BRS (bond rotation), the BUG or with non-U.S. equity strategies like World Top 4.