What is the difference between hedging and diversification? How does each reduce risk?
Hedging - You have an investment and are worried that the price might drop in the near future. You don't want to sell as this will realise a capital gain for which you may have to pay capital gains tax. So instead you make an investment in another instrument (sometimes called insurance) to offset falls in your investment.  An example may be that you own shares in XYZ. You feel the price has risen sharply over the last month and is due for a steep fall. So you buy some put option over XYZ. You pay a small premium and if the price of XYZ falls you will lose money on the shares but will make money on the put option, thus limiting your losses. If the price continues to go up you will only lose the premium you paid for the option (very similar to an insurance policy). Diversification - This is when you may have say $100,000 to invest and spread your investments over a portfolio of shares, some units in a property fund and some bonds. So you are spreading your risks and returns over a range of products. The idea is if one stock or one sector goes down, you will not lose a large portion of your investment, as it is unlikely that all the different sectors will all go down at the same time. "The difference is in the interrelation between the varied investments you make. Hedging is about specifically offsetting a possible loss in an investment by making another related investment that will increase in value for the same reasons that the original investment would lose value. Gold, for instance, is often regarded as the ultimate hedge. Its value is typically inversely correlated to the rest of the market as a whole, because its status as a material, durable store of value makes it a preferred ""safe haven"" to move money into in times of economic downturn, when stock prices, bond yields and similar investments are losing value. That specific behavior makes investing in gold alongside stocks and bonds a ""hedge""; the increase in value of gold as stock prices and bond yields fall limits losses in those other areas. Investment of cash in gold is also specifically a hedge against currency inflation; paper money, account balances, and even debt instruments like bonds and CDs can lose real value over time in a ""hot"" economy where there's more money than things to buy with it. By keeping a store of value in something other than currency, the price of that good will rise as the currencies used to buy it decrease in real value, maintaining your level of real wealth. Other hedges are more localized. One might, for example, trade oil futures as a hedge on a position in transportation stocks; when oil prices rise, trucking and airline companies suffer in the short term as their margins get squeezed due to fuel costs. Currency futures are another popular hedge; a company in international business will often trade options on the currencies of the companies it does business in, to limit the ""jitters"" seen in the FOREX spot market caused by speculation and other transient changes in market demand. Diversification, by contrast, is about choosing multiple unrelated investments, the idea being to limit losses due to a localized change in the market. Companies' stocks gain and lose value every day, and those companies can also go out of business without bringing the entire economy to its knees. By spreading your wealth among investments in multiple industries and companies of various sizes and global locations, you insulate yourself against the risk that any one of them will fail.  If, tomorrow, Kroger grocery stores went bankrupt and shuttered all its stores, people in the regions it serves might be inconvenienced, but the market as a whole will move on. You, however, would have lost everything if you'd bet your retirement on that one stock. Nobody does that in the real world; instead, you put some of your money in Kroger, some in Microsoft, some in Home Depot, some in ALCOA, some in PG&E, etc etc. By investing in stocks that would be more or less unaffected by a downturn in another, if Kroger went bankrupt tomorrow you would still have, say, 95% of your investment next egg still alive, well and continuing to pay you dividends. The flip side is that if tomorrow, Kroger announced an exclusive deal with the Girl Scouts to sell their cookies, making them the only place in the country you can get them, you would miss out on the full possible amount of gains you'd get from the price spike if you had bet everything on Kroger.  Hindsight's always 20/20; I could have spent some beer money to buy Bitcoins when they were changing hands for pennies apiece, and I'd be a multi-millionaire right now. You can't think that way when investing, because it's ""survivor bias""; you see the successes topping the index charts, not the failures. You could just as easily have invested in any of the hundreds of Internet startups that don't last a year."
"Taking examples from this loosely Googled page: http://www.fundlibrary.com/features/columns/page.asp?id=14406 If you find, or calculate, the standard deviation (volatility) of the returns from your various investment classes you will find they range from low-risk (low volatility), such as Cash, to high-risk (high volatility), such as Strategic Growth.  The risk rating (volatility) is a good indicator of how reactive to market conditions your investment is likely to be.  As you can see below, from mid-2010 to mid-2011 the High Risk index performed really well, but it was also most reactive when the market subsequently turned down.  The medium risk indices performed the best over the chart period, 2010 to 2013, but it could have turned out different.  Generally, you choose your investment according to your ""risk appetite"" - how much you're willing to risk.  You might play safe with, say, 30% cash, 60% medium risk, 10% high risk.  (Then again, are you paying someone to manage cash, which you might be able to do for free in a bank?) Assuming, for a moment, European (3.) and Intnl Equity Tracker (9.) had the same medium risk profile, then holding 50% & 50% would also add some currency diversification, which is usually advisable.  However, the main choice is down to risk appetite. To address your specific question: ""my main interest for now is between Stockmarket Growth and Strategic Growth"", first thing to do is check their volatilities. For a further level of sophistication you can check how they are correlated against each other.  If they are inversely correlated, i.e. one goes up when the other goes down, then holding some of each could be a good diversification. FYI: An Introduction to Investment Theory The historical returns are important too, but the investment classes your pension fund is offering will probably be reasonably aligned on a risk-return basis.  You should check though.  I.e. do they line up on a plot of 3 year Return vs Volatility? e.g. the line through SA Cash - SA Bonds - Vol Target 20 - SA Equity.  Source" The software you provided as an example won't teach you much about investing. The most important things of investing are: These are the only free lunches in investing. Allocation tells you how much expected return (and also how much risk) your portfolio has. Diversification is the only way to reduce risk without reducing return; however, just note that there is market risk that cannot be eliminated with diversification. Every penny you save on costs and taxes is important, as it's guaranteed return. If you were to develop e.g. software that calculates the expected return of a portfolio when given allocation as an input, it could teach you something about investing. Similarly, software that calculates the average costs of your mutual fund portfolio would teach you something about investing. But sadly, these kinds of software are uncommon. "Having savings only in your home currency is relatively 'low risk' compared with other types of 'low diversification'. This is because, in a simple case, your future cash outflows will be in your home currency, so if the GBP fluctuates in value, it will (theoretically) still buy you the same goods at home. In this way, keeping your savings in the same currency as your future expenditures creates a natural hedge against currency fluctuation. This gets complicated for goods imported from other countries, where base price fluctuates based on a foreign currency, or for situations where you expect to incur significant foreign currency expenditures (retirement elsewhere, etc.). In such cases, you no longer have certainty that your future expenditures will be based on the GBP, and saving money in other currencies may make more sense. In many circumstances, 'diversification' of the currency of your savings may actually increase your risk, not decrease it. Be sure you are doing this for a specific reason, with a specific strategy, and not just to generally 'spread your money around'. Even in case of a Brexit, consider: what would you do with a bank account full of USD? If the answer is ""Convert it back to GBP when needed (in 6 months, 5 years, 30, etc.), to buy British goods"", then I wouldn't call this a way to reduce your risk. Instead, I would call it a type of investment, with its own set of risks associated." There contracts called an FX Forwards where you can get a feel for what the market thinks an exchange rate will be in the future.  Now exchange rates are notoriously uncertain, but it is worth noting that at current prices market believes your Krona will be worth only 0.0003 Euro less three years from now than it is worth now. So, if you are considering taking money out of your investments and converting it to Euro and missing out on three years of dividends and hopefully capital gains its certainly possible this may work out for you but this is unlikely.  If you are at all uncertain that you will actually move this is an even worse idea as paying to convert money twice would be an additional expense on top of the missed returns. There are FX financial products (futures and forwards) where you can get exposure to FX without having to put the full amount down.  This could help hedge your house value but this can be extremely expensive over time for individual investors and would almost certainly not work in your favor. Something that could help reduce your risk a bit would be to invest more heavily in European even Irish (and British?) stocks which will move along with the currency and economy.  You can lose some diversification doing this, but it can help a little. It's the same as with equities. If you're just buying foreign currencies to hold, you can't lose more than you invest. But if you're buying derivatives (e.g. forward contracts or spread bets), or borrowing to buy on margin, you can certainly lose more than you invest. If you are diversifying just for diversification purposes then all you are doing is averaging down your returns. You shouldn't just buy two securities because you think it is safer than putting all your money into one. A better method is to use money management and position sizing to limit your risk and exposure in any one security. You should know what your maximum risk is before you buy any security and know when it is time to get out of it. There are better ways to manage your risk. Don't put all your eggs in the one basket - yes, but don't diversify just for diversification purposes. The easiest way to deal with risks for individual stocks is to diversify. I do most of my investing in broad market index funds, particularly the S&P 500.  I don't generally hold individual stocks long, but I do buy options when I think there are price moves that aren't supported by the fundamentals of a stock. All of this riskier short-term investing is done in my Roth IRA, because I want to maximize the profits in the account that won't ever be taxed. I wouldn't want a particularly fruitful investing year to bite me with short term capital gains on my income tax. I usually beat the market in that account, but not by much. It would be pretty easy to wipe out those gains on a particularly bad year if I was investing in the actual stocks and not just using options. Many people who deal in individual stocks hedge with put options, but this is only cost effective at strike prices that represent losses of 20% or more and it eats away the gains. Other people or try to add to their gains by selling covered call options figuring that they're happy to sell with a large upward move, but if that upward move doesn't happen you still get the gains from the options you've sold. "Diversification is spreading your investments around so that one point of risk doesn't sink your whole portfolio. The effect of having a diversified portfolio is that you've always got something that's going up (though, the corollary is that you've also always got something going down... winning overall comes by picking investments worth investing in (not to state the obvious or anything :-) )) It's worth looking at the different types of risk you can mitigate with diversification:  Company risk This is the risk that the company you bought actually sucks. For instance, you thought gold was going to go up, and so you bought a gold miner.  Say there are only two -- ABC and XYZ.  You buy XYZ. Then the CEO reveals their gold mine is played out, and the stock goes splat. You're wiped out. But gold does go up, and ABC does gangbusters, especially now they've got no competition.  If you'd bought both XYZ and ABC, you would have diversified your company risk, and you would have been much better off. Say you invested $10K, $5K in each. XYZ goes to zero, and you lose that $5K. ABC goes up 120%, and is now worth $11K. So despite XYZ bankrupting, you're up 10% on your overall position.  Sector risk You can categorize stocks by what ""sector"" they're in. We've already talked about one: gold miners. But there are many more, like utilities, bio-tech, transportation, banks, etc. Stocks in a sector will tend to move together, so you can be right about the company, but if the sector is out of favor, it's going to have a hard time going up.    Lets extend the above example. What if you were wrong about gold going up? Then XYZ would still be bankrupt, and ABC would be making less money so they went down as well; say, 20%. At that point, you've only got $4K left. But say that besides gold, you also thought that banks were cheap. So, you split your investment between the gold miners and a couple of banks -- lets call them LMN and OP -- for $2500 each in XYZ, ABC, LMN, and OP. Say you were wrong about gold, but right about banks; LMN goes up 15%, and OP goes up 40%.  At that point, your portfolio looks like this: XYZ start $2500 -100% end $0 ABC start $2500 +120% end $5500 LMN start $2500 +15% end $2875 OP start $2500 +40% end $3500 For a portfolio total of: $11,875, or a total gain of 18.75%.  See how that works?  Region/Country/Currency risk So, now what if everything's been going up in the USA, and everything seems so overpriced? Well, odds are, some area of the world is not over-bought. Like Brazil or England. So, you can buy some Brazilian or English companies, and diversify away from the USA. That way, if the market tanks here, those foreign companies aren't caught in it, and could still go up. This is the same idea as the sector risk, except it's location based, instead of business type based.  There is an additional twist to this -- currencies.  The Brits use the pound, and the Brazilians use the real. Most small investors don't think about this much, but the value of currencies, including our dollar, fluctuates. If the dollar has been strong, and the pound weak (as it has been, lately), then what happens if that changes? Say you own a British bank, and the dollar weakens and the pound strengthens. Even if that bank doesn't move at all, you would still make a gain.  Example: You buy British bank BBB for 40 pounds a share, when each pound costs $1.20. Say after a while, BBB is still 40 pounds/share, but the dollar weakened and the pound strengthened, such that each pound is now worth $1.50. You could sell BBB, and because of the currency exchange once you've got it converted back to dollars you'd have a 25% gain.   Market cap risk Sometimes big companies do well, sometimes it's small companies. The small caps are riskier but higher returning. When you think about it, small and mid cap stocks have much more ""room to run"" than large caps do. It's much easier to double a company worth $1 billion than it is to double a company worth $100 billion.  Investment types Stocks aren't the only thing you can invest in. There's also bonds, convertible bonds, CDs, preferred stocks, options and futures. It can get pretty complicated, especially the last two. But each of these investment behaves differently; and again the idea is to have something going up all the time.  The classical mix is stocks and bonds. The idea here is that when times are good, the stocks go up; when times are bad, the bonds go up (because they're safer, so more people want them), but mostly they're there to providing steady income and help keep your portfolio from cratering along with the stocks. Currently, this may not work out so well; stocks and bonds have been moving in sync for several years, and with interest rates so low they don't provide much income.  So what does this mean to you? I'm going make some assumptions here based on your post. You said single index, self-managed, and don't lower overall risk (and return). I'm going to assume you're a small investor, young, you invest in ETFs, and the single index is the S&P 500 index ETF -- SPY.  S&P 500 is, roughly, the 500 biggest companies in the USA. Further, it's weighted -- how much of each stock is in the index -- such that the bigger the company is, the bigger a percentage of the index it is.  If slickcharts is right, the top 5 companies combined are already 11% of the index! (Apple, Microsoft, Exxon, Amazon, and Johnson & Johnson). The smallest, News Corp, is a measly 0.008% of the index.  In other words, if all you're invested in is SPY, you're invested in a handfull of giant american companies, and a little bit of other stuff besides.  To diversify: Company risk and sector risk aren't really relevant to you, since you want broad market ETFs; they've already got that covered. The first thing I would do is add some smaller companies -- get some ETFs for mid cap, and small cap value (not small cap growth; it sucks for structural reasons). Examples are IWR for mid-cap and VBR for small-cap value.   After you've done that, and are comfortable with what you have, it may be time to branch out internationally. You can get ETFs for regions (such as the EU - check out IEV), or countries (like Japan - see EWJ). But you'd probably want to start with one that's ""all major countries that aren't the USA"" - check out EFA.  In any case, don't go too crazy with it. As index investing goes, the S&P 500 is not a bad way to go. Feed in anything else a little bit at a time, and take the time to really understand what it is you're investing in.  So for example, using the ETFs I mentioned, add in 10% each IWR and VBR. Then after you're comfortable, maybe add 10% EFA, and raise IWR to 20%. What the ultimate percentages are, of course, is something you have to decide for yourself.  Or, you could just chuck it all and buy a single Target Date Retirement fund from, say, Vanguard or T. Rowe Price and just not worry about it."