Show notes
Hey everyone. This is Kirk here again from Option Alpha and welcome back to the daily call. Today, we're going to be talking about Beta neutral versus Delta neutral options trading portfolios. And I think this is really important because I think that a lot of people actually do not understand the difference between a Delta neutral portfolio and a Beta neutral portfolio. And while they sound very similar, there's actually a big difference between the two. Let's start with a Delta neutral portfolio. When we look at a Delta neutral portfolio, what we're talking about is we're talking about the net Deltas of the underlying options positions that we're trading. If we've got some iron butterflies and credit spreads and strangles, maybe naked options, basically just totaling up all of those Deltas and then trying to figure out – Okay. What are the total Deltas in my portfolio? Now, many times, people will say, "Oh. Well, I want to be Delta neutral which means that I want to have a portfolio that has an equal balance of positive Deltas and negative Deltas." And what that will do is that means that that portfolio generally will make money in any market direction because the Deltas are balanced. If the market goes down, it's completely offset by positions that make money when the market goes up and then you just capture time decay and volatility decay as the kind of edge or premium. And that works to a certain degree, but the problem is that not all Deltas are created equal because what we find is that we find if we trade products that have either high correlations to one another or high inverse correlations to one another, a Delta on one product is not the exact equivalent as the Delta on another product.
So, to use pretty much the standard case study for this, we could look at TLT and SPY which S&P is the broad S&P 500 index ETF and then TLT is the bond market 20-year bond ETF. The bond market ETF, TLT is not the same as the stock market. Bonds are not the same as stocks which means that when the stock market goes up, that does not always mean that the bond market goes up the same exact amount. If you have a positive Delta portfolio and your positive Deltas or Delta neutral on your portfolio of stocks and bonds, that doesn't really mean much. That doesn't mean that you're actually neutral to the market because TLT has a Beta, a Beta that tracks how likely TLT is to move for every dollar or $1 move up in the market. It has a negative Beta of .17 right now and that's that the time I'm actually recording this. It has a –.17 Beta which means that if the market goes up, TLT is likely to go down. If you've got positive Deltas or neutral Deltas in both of these positions, that doesn't necessarily mean that you're neutral to market movements. It means that you could be tilted one direction or the other.
Introducing now Beta weighted Deltas which is how we Beta weight our portfolio, now we take our portfolio and we say, "Okay. Let's Beta weight, use these Beta metrics like the –.17 in TLT and all the other different Beta metrics that we can calculate and figure out and let's Beta weight our portfolio to some broad based index like the S&P and we use SPY." Now, what it does is it runs the analysis and it says, "Look. If your portfolio was hypothetically one big position in SPY, then how would the portfolio curve look? How would your P&L diagram look if everything was Beta weighted and then adjusted for a position in SPY?" That means that negative Betas and super high positive Betas would be adjusted to their SPY kind of correlation and coefficient. And so, now what we see is we see a much better representation. When you use Beta neutral or Beta weighted Delta neutral trading, we see a much better representation of what your portfolio is actually going to do, all positions included, negative Beta stocks, high Beta stocks, negative Beta ETFs, high Beta ETFs, what the whole portfolio is going to do, including all the positions and the likelihood of their correlation to the overall market that you're using. This is a really fascinating area. Again, it's really different. If you're going to trade Delta neutral, it really only works if you're trading in one particular product. Like you could trade Delta neutral in SPY as long as you have nothing else because there's no need to Beta weight SPY to itself, but as soon as you introduce just one other ticker symbol, you had better switch over to a Beta weighted or Beta Delta waiting type of approach for your portfolio, so you have a better understanding of how things are going to react and what the correlations are between those different products.
Hopefully this helps out. I know this is a little bit more high level, but it's super, super important you know the difference between these. If you have any questions, let me know and until next time, happy trading.