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The Quick Guide To A Green Stock Portfolio

For most people, the best way to build a green or fossil-free portfolio will be to use mutual funds or an investment advisor. The exceptions are those who like to do things for themselves, and understand the significant advantage that saving just a fraction of a percent in annual fees can make to the long term performance of a portfolio.

For these exceptions, the right choice may be to build a portfolio from scratch, using individual stocks.  While managing your own portfolio could easily become a full time job, there are ways to build and maintain a stock portfolio with a time commitment measured in hours, not days.

One way is to piggy-back on the work of the professionals by starting with mutual fund holdings.  Garvin Jabusch, Co-Founder and CIO of Green Alpha Advisors in Boulder, Colorado and the co-manager of a fossil-free mutual fund thinks this is the way to go for busy professionals. "If I were a doctor or a lawyer, I'd probably use this strategy," he said.

The Stock Lists

The Securities and Exchange Commission (SEC) requires that mutual funds disclose their portfolios quarterly, but many often disclose their holdings more frequently on their websites.  Start by selecting a few green mutual funds, ideally the ones you would consider investing in if you were to build a mutual fund portfolio rather than a stock portfolio.  An investor who wanted to build a fossil fuel free portfolio might use mutual funds that describe themselves that way, such Green Century Equity (GCEQX), Portfolio 21 (PORTX), and Jabusch's Shelton Green Alpha (NEXTX). The links connect to each fund’s list of holdings on Morningstar.

The table to the right is a list of all the stocks in these three funds top ten holdings, organized by sector.  The sector designations (Technology, Healthcare, etc.) are the categorizations given by Morningstar.   It also includes each company's dividend yield and beta. Beta is a widely used measure of a stock's market risk.

The choice to use three funds and ten holdings from each is fairly arbitrary.  The list simply needs to include enough stocks from as many different industries as possible to build the portfolio described below.  In addition to these and the holdings of other green mutual funds, a variety of other publications such as gofossilfree.org's Extracting Fossil Fuels from Your Portfolio [pdf] also include useful stock lists. 

One criticism of green mutual funds is that they tend to be heavy on technology and healthcare stocks, as is clearly the case in this table.  The next step is to correct for this bias.

Balancing The Portfolio

A "Balanced Portfolio" usually refers to a portfolio containing a balance of different security types, usually equities (stocks) and fixed income (bonds.)  According to conventional financial theory, the right balance depends on an investor's financial resources and risk tolerance.  There are any number of online calculators and questionnaires available that will take this sort of personal data and produce portfolio allocations to match. 

This article is mostly about the stock or equity portion of the portfolio.  For the fixed income portion of the portfolio, the best choice is to reduce debt.  Any debt (mortgage, car loan, credit card) an investor owes is a bank's or someone else's fixed income security.  By paying down that debt, the investor can effectively buy it back that security, while saving the overhead costs built into the loan.  Investors without any debt can bear more risk and invest more in equities because they have no need for extra income to meet the required periodic payments.

Similarly, taking measures such as increasing the energy efficiency of your home or paying up-front to install solar (as opposed to leasing a system) will offer financial returns similar to fixed income securities.  While the attractiveness of installing solar varies widely from state to state depending on the level of incentives and sun available, energy efficiency investments usually have incredibly attractive returns.  A good indicator that a home solar system is an attractive investment is if a solar company like SolarCity is willing to lease it to you.  If SolarCity can make money leasing you a system, you'll probably do well making the investment yourself. 

Investors using tax-advantaged accounts such as IRAs will be limited to more conventional financial investments.  Simple options include a bank CDs from a relatively green bank such as Capital Pacific Bancorp (CPBO) or Toronto-Dominion Bank (TD).  TD Bank also happens to be included in the stock list to the right.  A number of solar-lease like investments are listed here.

Many investors will find that the 1.25 percent interest from a 7-year CD may be a safe, but not particularly attractive, investment.  One option is to use a portfolio of high-income equities. 

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While the financial theory that gives us the portfolio allocation referenced above assumes that there is a natural trade-off between return and risk, real world research only finds that trade-off between asset classes.  In other words, real world data supports the conclusion that stocks have higher risk and return than bonds, but not that risky stocks have higher returns than safer stocks. 

In fact, historical data shows that safer stocks have actually had higher long-term returns than risky stocks. This is called the low-risk anomaly (a.k.a. low-beta anomaly or low-volatility anomaly.)  A consequence of the low-risk anomaly is that a portfolio of low-risk, high yield stocks is likely to have higher returns and yield than typical portfolios of stocks or bonds, or combinations of the two. 

Investors who are aware of the anomaly and are willing to flout conventional wisdom can have their cake and eat it, too.  Especially in the current low interest rate environment, a portfolio of low-risk, high income stocks is likely to have both higher current income and higher returns so long as the anomaly holds.

Diversification

The benefit of owning a large number of stocks is diversification: If economic or political events harm a single company or industry, good diversification will keep the rest of the portfolio safe. For the small stock investor, diversification comes with a trade-off of higher transaction costs, which is one of the main arguments for using mutual funds and ETFs.  However, large mutual funds also have trading costs, especially in the form of the tendency for large trades to move the market price.  As Micheal Lewis relates in his recent book, Flash Boys, it is these large transactions that high frequency traders are able to exploit, at the expense of the mutual fund investor.  The trades of an individual are far too small for high frequency traders to both with.

To keep trading costs low, a good rule of thumb is to keep brokerage commissions to no less than 0.5 percent or 1/200th of any transaction, and trade as little as possible.  That means that if you pay $8 per transaction, each trade should be for at least $1,600 (=$8 x 200.)  Thus, an investor with a $20,000 account could have as many as 12 positions without violating this rule.  If a portfolio is too small to have 10 positions using this rule, the diversification of a mutual fund is probably a better choice until the account grows.   For larger accounts, transaction size should increase as well to further reducing investment costs.  20 positions should be plenty for the purpose of diversification if care is taken to select stocks in a wide range of industries that behave differently in various economic conditions.

To select a 10 stock portfolio from a list like the one shown with this article, start by selecting the stock from each industry with the best combination of low beta (to take advantage of the low beta anomaly) and high yield (to compensate for not including fixed income.)  In this case, we have 8 industry groups for eight stocks: INTC, MRK, VE, PG, JCI, TD, JLL, and ITC. To complete the portfolio, take the next two highest yielding, low beta stocks, so long as they are not in the same industry: RHHBY and PEP. 

An investor who buys equal dollar amounts of each of these 10 stocks will have a moderately diversified, low cost, low beta, relatively high yield (2.8 percent), fossil-free portfolio.

Closing The Circle

Jan Schalkwijk, a green investment advisor at JPS Global Investments, says that when using this strategy, it is very important not just to buy the stocks and forget about them, but also "close the circle."  To follow this strategy effectively, an investor should update the portfolio periodically. 

To see why updating the portfolio over time is important, consider a 5-stock "tracking portfolio," which was designed to mimic the performance of the alternative energy mutual funds using a similar procedure in 2009.  Six months later, the tracking portfolio was out performing the funds it had been drawn from.  But after 5 years, one of the five companies (Suntech Power) in the portfolio had gone bankrupt.  While the portfolio also contained a stock that had more than doubled, the portfolio as a whole was up only 1.5 percent over five years.  The three mutual funds it was drawn from had an average return of 61 percent over the same period.  Most likely the mutual funds avoided similar losses in solar stocks before the worst of the sector's troubles in 2011 and 2012.

A good procedure for updating the portfolio would be to repeat the exercise used to construct it whenever you add or withdraw money, or every two years if no additions or withdrawals take place.  If a stock in the portfolio no longer appears or has been greatly reduced in the mutual fund holdings you consider, it should probably be sold. However, in order to keep trading at a minimum, the stock should not be sold if it just falls out of the top ten holdings but is still a significant portion of one or more funds' portfolios.  Half of any position that has doubled in value since it was purchased should also be sold in order to keep that stock from becoming too large a part of the overall portfolio and reducing the overall diversification.

The proceeds of sales and any new additions to the portfolio can be invested in new stocks selected using the same procedure outlined above: spread the portfolio as widely as possible across different industries while choosing stocks with high yield and low beta within each industry.

DISCLOSURE: Long VE.

DISCLAIMER: Past performance is not a guarantee or a reliable indicator of future results.  This article contains the current opinions of the author and such opinions are subject to change without notice.  This article has been distributed for informational purposes only. Forecasts, estimates, and certain information contained herein should not be considered as investment advice or a recommendation of any particular security, strategy or investment product.  Information contained herein has been obtained from sources believed to be reliable, but not guaranteed.

Lead image: Stock market chart via Shutterstock

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Tom Konrad is a private money manager and freelance writer focused on Peak Oil and Climate Change as investment themes. He manages portfolios for individual clients and is Head of Research for the JPS Green Economy Fund (http://jpsgreeneconomyfund...

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