What are the primary investment strategies people use and why do they use them?
"There are two umbrellas in investing: active management and passive management. Passive management is based on the idea ""you can't beat the market."" Passive investors believe in the efficient markets hypothesis: ""the market interprets all information about an asset, so price is equal to underlying value"". Another idea in this field is that there's a minimum risk associated with any given return. You can't increase your expected return without assuming more risk. To see it graphically:   As expected return goes up, so does risk. If we stat with a portfolio of 100 bonds, then remove 30 bonds and add 30 stocks, we'll have a portfolio that's 70% bonds/30% stocks. Turns out that this makes expected return increase and lower risk because of diversification. Markowitz showed that you could reduce the overall portfolio risk by adding a riskier, but uncorrelated, asset! Basically, if your entire portfolio is US stocks, then you'll lose money whenever US stocks fall. But, if you have half US stocks, quarter US bonds, and quarter European stocks, then even if the US market tanks, half your portfolio will be unaffected (theoretically). Adding different types of uncorrelated assets can reduce risk and increase returns.  Let's tie this all together. We should get a variety of stocks to reduce our risk, and we can't beat the market by security selection. Ideally, we ought to buy nearly every stock in the market so that  So what's our solution? Why, the exchange traded fund (ETF) of course! An ETF is basically a bunch of stocks that trade as a single ticker symbol. For example, consider the SPDR S&P 500 (SPY). You can purchase a unit of ""SPY"" and it will move up/down proportional to the S&P 500. This gives us diversification among stocks, to prevent any significant downside while limiting our upside. How do we diversify across asset classes? Luckily, we can purchase ETF's for almost anything: Gold ETF's (commodities), US bond ETF's (domestic bonds), International stock ETFs, Intl. bonds ETFs, etc. So, we can buy ETF's to give us exposure to various asset classes, thus diversifying among asset classes and within each asset class. Determining what % of our portfolio to put in any given asset class is known as asset allocation and some people say up to 90% of portfolio returns can be determined by asset allocation.  That pretty much sums up passive management. The idea is to buy ETFs across asset classes and just leave them. You can readjust your portfolio holdings periodically, but otherwise there is no rapid trading. Now the other umbrella is active management. The unifying idea is that you can generate superior returns by stock selection. Active investors reject the idea of efficient markets.  A classic and time proven strategy is value investing. After the collapse of 07/08, bank stocks greatly fell, but all the other stocks fell with them. Some stocks worth $100 were selling for $50. Value investors quickly snapped up these stocks because they had a margin of safety. Even if the stock didn't go back to 100, it could go up to $80 or $90 eventually, and investors profit. The main ideas in value investing are: have a big margin of safety, look at a company's fundamentals (earnings, book value, etc), and see if it promises adequate return. Coke has tremendous earnings and it's a great company, but it's so large that you're never going to make 20% profits on it annually, because it just can't grow that fast. Another field of active investing is technical analysis. As opposed to the ""fundamental analysis"" of value investing, technical analysis involves looking at charts for patterns, and looking at stock history to determine future paths. Things like resistance points and trend lines also play a role. Technical analysts believe that stocks are just ticker symbols and that you can use guidelines to predict where they're headed.  Another type of active investing is day trading. This basically involves buying and selling stocks every hour or every minute or just at a rapid pace. Day traders don't hold onto investments for very long, and are always trying to predict the market in the short term and take advantage of it. Many individual investors are also day traders.  The other question is, how do you choose a strategy? The short answer is: pick whatever works for you. The long answer is: Day trading and technical analysis is a lot of luck. If there are consistent systems for trading , then people are keeping them secret, because there is no book that you can read and become a consistent trader. High frequency trading (HFT) is an area where people basically mint money, but it s more technology and less actual investing, and would not be categorized as day trading.  Benjamin Graham once said: In the short run, the market is a voting machine but in the long run it is a weighing machine. Value investing will work because there's evidence for it throughout history, but you need a certain temperament for it and most people don't have that. Furthermore, it takes a lot of time to adequately study stocks, and people with day jobs can't devote that kind of time. So there you have it. This is my opinion and by no means definitive, but I hope you have a starting point to continue your study. I included the theory in the beginning because there are too many monkeys on CNBC and the news who just don't understand fundamental economics and finance, and there's no sense in applying a theory until you can understand why it works and when it doesn't." Your question seems to be making assumptions around “investing”, that investing is only about stock market and bonds or similar things. I would suggest that you should look much broader than that in terms of your investments. Investment Types Your should consider (and include) some or all of the following for your investments, depending on your age, your attitude towards risk, the number of dependents you have, your lifestyle, etc. I love @Blackjack’s explanation of diversification into other asset classes producing a lower risk portfolio. Excellent! All the above need to be considered in this spread of risk, depending as I said earlier on your age, your attitude towards risk, the number of dependents you have, your lifestyle, etc. Stock Market Investment I’ll focus most of the rest of my post on the stock markets, as that is where my main experience lies. But the comments are applicable to a greater or lesser extent to other types of investing. We then come to how engaged you want to be with your investments. Two general management styles are passive investment management versus active investment management. @Blackjack says  That pretty much sums up passive management. The idea is to buy ETFs   across asset classes and just leave them. The difficulty with this idea is that profitability is very dependent upon when the stocks are purchased and when they are sold. This is why active investing should be considered as a viable alternative to passive investment.  I don’t have access to a very long time frame of stock market data, but I do have 30 or so years of FTSE data, so let’s say that we invest £100,000 for 10 years by buying an ETF in the FTSE100 index. I know this isn't de-risking across a number of asset classes by purchasing a number of different EFTs, but the logic still applies, if you will bear with me. Passive Investing I have chosen my example dates of best 10 years and worst 10 years as specific dates that demonstrate my point that active investing will (usually) out-perform passive investing. From a passive investing point of view, here is a graph of the FTSE with two purchase dates chosen (for maximum effect), to show the best and worst return you could receive. Note this ignores brokerage and other fees. In these time frames of data I have …   These are contrived dates to illustrate the point, on how ineffective passive investing can be, depending if there is a bear/bull market and where you buy in the cycle.  One obviously wouldn’t buy all their stocks in one tranche, but I’m just trying to illustrate the point. Active Investing Let’s consider now active investing. I use the following rules for selling and buying:- This is obviously a very simple technical trading system and I would not recommend using it to trade with, as it is overly simplistic and there are some flaws and inefficiencies in it. So, in my simulation,  These beat the passive stock market profit for their respective dates. Summary Passive stock market investing is dependent upon the entry and exit prices on the dates the transactions are made and will trade regardless of market cycles. Active stock market trading or investing engages with the market using a set of criteria, which can change over time, but allows one’s investments to be in or out of the market at any point in time. My time frames were arbitrary, but with the logic applied (which is a very simple technical trading methodology), I would suggest that any 10 year time frame active investing would beat passive investing.
You can always use those virtual/paper trading games/websites/apps instead of actually investing. They're completely free to use and you can use them to compete. You'll each create a portfolio of stocks and the game will simulate market conditions to see how your stocks would perform real-time.   It's a great way to learn how to invest, and discussing what happened/why _____ sector performed higher/etc. It's a great way to start.  If you're looking for a discussion-type thing, start off by reading the Intelligent Investor by Benjamin Graham, and discuss amongst the club.  Frankly, I don't see why you can't do both, investing and discussing/learning.  Virtual Trading Websites: MarketWatch Virtual Stock Exchange  Apps: StockWars: Virtual Trading "You have heard the old adage ""Buy low, sell high"", right? That sounds so obvious that you'd have to wonder why they would ever bother coining such an expression. It should rank up there with ""Don't walk in front of a moving car"" on the Duh scale of advice. Well, your question demonstrates exactly why it isn't quite so obvious in the real world and that people need to be reminded of it.  So, in your example, the stock prices are currently low (relative to what they have been). So per that adage, do you sell or buy when prices are low? Hint: It isn't sell. Yes. Your gut is going to tell you the exact opposite thanks to the fact that our brains are unfortunately wired to make us susceptible to the loss aversion fallacy. When the market has undergone a big drop is the WORST time to stop contributing (buying stocks).  This example might help get your brain and gut to agree a little more easily: If you were talking about any other non-investment commodity, cars for instance.  Your question equates to.. I really need a car, but the prices have been dropping like crazy lately.    Maybe I should wait until the car dealers start raising their prices again before I buy one. Dollar Cost Averaging As littleadv suggested, if you have an automatic payroll deduction for your retirement account, you are getting the benefit of Dollar Cost Averaging. Because you are investing the same amount on a scheduled interval, you are buying more shares when they are cheap and fewer when they are expensive. It is like an automatic buy low strategy is built into the account. The alternative, which you are implying, is a market timing strategy. Under this strategy, instead of investing regularly you try to get in and out of investments right before they go up/drop. There are two MAJOR flaws with this approach:   1) Your brain will work against you (see above) and encourage you to do the exact opposite of what you should be doing.   2) Unless you are clairvoyant, this strategy isn't much better than gambling. If you are lucky it can work, but because of #1, the odds are stacked against you." What do you want to do with your degree?  Corporate finance? Investment banking? Wealth management?  It all depends on that. Having said that here are some ideas that are useful in a wide variety of scenarios:  1. Accounting, accounting, accounting. Whether you are at an I-Bank or a mid-cap consumer goods company, knowing as much accounting as possible can be hugely helpful. Ive interviewed for jobs at all kinds of companies and one thing that always works on interviewers is showing them you have intimate knowledge of accounting rules.  2. Excel/information system courses. Knowing Excel inside and out and/or some of the more widely used information systems out there can give you a nice little bump in interviews  3. Statistics. Statistics teaches you how to think. Even if you never run a regression again in your life, some of the general principles you learn in stats are absolutely priceless. Not just for work but for *life*. Knowing why you need to control for variables, why samples work, etc. can be a hugely helpful thing not just at work but in dealing with life decisions and sorting through information.  Some people here are telling you to learn how to program. That's useful if you want to be a quant or if you want to keep the door open to potentially moving into a quant/data analytics job in the future and that's about it. Companies hire software engineers to do the coding. If you intend to work as an investment banker or a wealth manager, for example, Java wont help you a lick. Let the engineers worry about writing the code. Focus on the stuff that actually moves your career forward and dont try to be everything. If you absolutely want to do something software-related then learn SQL. At least in some shops (particularly corporate finance jobs) you might from time to time be able to use it to query some database or another, although again at most companies there are entire armies of well-paid people providing the necessary interfaces and tools to prevent you from having to do that. "Why do people keep talking about 401K's at work?  That is NOT dollar cost averaging.  DCA refers to when you have a large sum of money.  Do you invest it all at once or spread it out over several smaller purchases over a period of time?  There really isn't a ""when"" should I use it.  It is simply a matter of where your preferences lie on the risk/reward scpectrum.  DCA has lower risk and lower reward than lump sum investing.  In my opinion, I don't like it.  DCA only works better than lump sum investing if the price drops.  But if you think the price is going to drop, why are you buying the stock in the first place? Example: Your uncle wins the lottery and gives you $50,000.  Do you buy $50,000 worth of Apple now, or do you buy $10,000 now and $10,000 a quarter for the next four quarters? If the stock goes up, you will make more with lump-sum(LS) than you will with DCA. If the stock goes down, you will lose more with LS than you will with DCA. If the stock goes up then down, you will lose more with DCA than you will with LS. If the stock goes down then up, you will make more with DCA than you will with LS. So it's a tradeoff.  But, like I said, the whole point of you buying the stock is that you think it's going to go up! So why pick the strategy that performs worse in that scenario?" "If one takes a slightly more expansive view of the word ""saving"" to include most forms of durable asset accumulation, I think the reason some do and most don't is a matter of a few factors, I will include the three that seem obvious to me: Education Most schools in the US where I live do not offer personal finance courses, and even when they do, there is no opportunity for a student to practice good financial habits in that classroom setting. I think a simple assignment that required students to track every penny that they spend over the period of a few months would help them open their eyes to how much money is spent on trivial things that they don't need. Perhaps this would be more effective in a university setting where the students are usually away from home and therefore more responsible for the spending that occurs on their own behalf. Beyond simple education about personal finances, most people have no clue how the various financial markets work. If they understood, they would not allow inflation to eat away at their savings, but that's a separate topic from why people do not save. Culture Since much of the education above isn't happening, children get their primary financial education from their parents. This means that those who are wealthy teach their children how to be wealthy, and those who are poor pass on their habits to children who often also end up poor. Erroneous ideas about consumption vs. investment and its economic effects also causes some bad policy encouraging people to live beyond their means and use credit unwisely, but if you live in a country where the average person expects to eat out regularly and trade in their automobiles as soon as they experienced their highest rate of depreciation, it can be hard to recognize bad financial behavior for what it is. Collective savings rates reflect a lot of individuals who are emulating each other's bad behavior. Discipline Even when someone is educated about finances, they may not establish good habits of budgeting regularly, tracking spending, and setting financial goals. For me, it helps to be married to someone who has similar financial goals, because we budget monthly and any major purchases (over $100 or so) must be agreed upon at the beginning of the month (with obvious exceptions for emergencies). This eliminates any impulsive spending, which is probably 90% of the battle for me. Some people do not need to account to someone else in order to spend wisely, but everyone should find a system that works for them and helps them to maintain some financial discipline." Apart from investing in their own infrastructure, profits can be spent purchasing other companies, (Mergers and Acquisitions) investing in other securities, and frankly whatever they please. The idea here is that publicly traded companies have a fiduciary duty to their shareholders to make as much money as they can with the resources (including cash, but including so much more than that) available to the company. It happens that the majority of huge companies eventually stopped growing and figured out that they weren't good at making money outside their core discipline and started giving the money back through dividends, but that norm has been eroded by tech companies that have figured out how to keep growing and driving up share prices even after they become giants. Shareholders will pressure management to issue dividends if share prices don't keep going up, but until the growth slows down, most investors hang on and don't rock the boat. I consider speculation to be a security purchase where the point is to sell it to someone for a higher price.  Day-trading is completely speculative. I consider Investment to be a purchase you make for its underlying value. You are buying it at that price because you believe the present value of the future payments is higher than the price you are paying. I may sell an investment if a higher price is offered than I think it's worth, or if the business situation changes, but I don't plan on it.   Hedging is a third type of security purchase, where you are decreasing your overall risk.  If you are a hog farmer, selling hog futures on the CME is hedging, because it locks in the amount you get per hog, regardless of what the price of hogs does. Commodities markets only have hedgers and speculators.  Investors don't make sense, it doesn't have an underlying value. "I find it interesting that you didn't include something like [Total Bond Market](http://stockcharts.com/freecharts/perf.html?VBMFX), or [Intermediate-Term Treasuries](http://stockcharts.com/freecharts/perf.html?VBIIX), in your graphic.   If someone were to have just invested in the DJI or SP500, then they would have ignored the tenants of the Modern Portfolio Theory and not diversified adequately.  I wouldn't have been able to stomach a portfolio of 100% stocks, commodities, or metals.  My vote goes for: 1.) picking an asset allocation that reflects your tolerance for risk (a good starting point is ""age in bonds,"" i.e. if you're 30, then hold 30% in bonds); 2.) save as if you're not expecting annualized returns of %10 (for example) and save more; 3.) don't try to pick the next winner, instead broadly invest in the market and hold it.  Maybe gold and silver are bubbles soon to burst -- I for one don't know.  I don't give the ""notion in the investment community"" much weight -- as it always is, someday someone will be right, I just don't know who that someone is."