Equity prices during currency devaluation — Mexico 1994
Yes, this phenomenon is well documented.  A collapse of an economy's exchange rate is coincidented with a collapse in its equities market.    The recent calamities in Turkey, etc during 2014 had similar results. Inflation is highly correlated to valuations, and a collapse of an exchange rate is highly inflationary, so a collapse of an exchange rate is highly correlated to a collapse in valuations.
During the hyperinflation of the Wiermer republic, corporate stocks and convertible bonds were thought second only to the species (gold, silver etc) as the only secure currencies.  As Milton Friedman proved, inflation is caused solely by the monetary token supply increasing faster than productivity.  In the past, days of species of currency, it was caused by governments debasing the currency e.g. streatching the same amount of silver in 50 coins to 100 coins. Sudden increases in the supply of precious metals can also trigger it. The various gold rushes in 19th century and later, improvements in extraction methods caused bouts of inflation. Most famously, the huge amounts of silver the Spanish extracted from the New World mines, devastated the European economy with high inflation. Governments use inflation as a form of stealth flat tax. Money functions as an Abstract Universal Trade Good and it obeys all the rules of supply and demand. If the supply of money goes up suddenly, then its value drops in relation to real goods and service. But that drop in value doesn't occur instantly, the increased quality of tokens has to percolate through the market before the value changes.  So, the first institution to spend the infalted/debased currency can get the full current value from trade. The second gets slightly less, the third even less and so on. In 2008, the Federal reserve began printing money and loaning at 0% to insolvent backs who then used that money to buy T-Bill. This had the duel effect of giving the banks an (arbitrary) A1 rated asset for their fractional reserve while the Federal government got full pre-inflation value of the money paid for the T-bills. As the government spent that money, the number of tokens increased fast than the economy.  In times of inflation, the value of money per unit drops as its supply increases and increases The best hedges against inflation are real assets e.g. land, equipment, stocks (ownership of real assets) and convertible bonds which are convertible to stock.  It's important to remember that money is, of itself, worthless. It's just a technology that abstracts and smilies trading which at the base, is still a barter system. During inflation the barter value of money plunges owing to increased supply. But the direct barter value between any two real assets remain the same because their supplies have not changed.  The value of stocks and convertible bonds is maintained by the economic activity of the company whose ownership they represent. Dividends, stock prices and bond equity, as measured in the inflated currency continue to rise in sync with inflation. Thus they preserve the original value of the money paid for them. Not sure why you expect more inflation. The only institution that can create inflation in the US is the Federal Reserve which Trump has no direct control off. Deregulation of banks won't cause inflation in and of itself as the private banks cannot alter the money supply. If banks fail, owing to deregulation, unlikely I think given the dismal nearly century long record of regulation to date, then the Federal Reserve might fix the problem with another inflation tax, but otherwise not. They all basically mean the same thing - a type of debt than can be exchanged for (converted into) equity at some point. It's only the mechanics that can be different. A convertible bond is structured just like a regular bond - it (usually) pays periodic interest and has a face value that's due at maturity. The difference is that the bond holder has the option to exchange the debt for equity at some point during the life of the bond.  There can be restrictions on when that conversion is possible, and they typically define a quantity of equity (number of shares) that the bond can be converted into.  If the market price of the shares goes above a price that would make the shares more valuable than the bond, it's in the best interest of the bond holder to convert. A convertible note is typically used to describe a kind of startup financing that does not pay interest or have a face value that's redeemed, but instead is redeemed for equity as part of a later financing round.  Rather than specifying a specific number of shares, the bond holder receives equity at a certain discount to the rest of the market. So they both are debt instruments that can turn into equity investments, just through different mechanisms. A debenture is a fancy word for unsecured debt, and convertible debt could be used to described either structure above, so those terms could mean either type of structure. I have, but they re-direct me to distribuitors in Mexico. The problem is that people who import the product get it waaay cheaper than with the maximum distribuition price in Mexico. But I have no idea where they find the product so cheap on the US... "One idea: If you came up with a model to calculate a ""fair price range"" for a stock, then any time the market price were to go below the range it could be a buy signal, and above the range it could be a sell signal. There are many ways to do stock valuation using fundamental analysis tools and ratios: dividend discount model, PEG, etc. See Wikipedia - Stock valuation. And while many of the inputs to such a ""fair price range"" calculation might only change once per quarter, market prices and peer/sector statistics move more frequently or at different times and could generate signals to buy/sell the stock even if its own inputs to the calculation remain static over the period. For multinationals that have a lot of assets and income denominated in other currencies, foreign exchange rates provide another set of interesting inputs. I also think it's important to recognize that with fundamental analysis, there will be extended periods when there are no buy signals for a stock, because the stocks of many popular, profitable companies never go ""on sale"", except perhaps during a panic. Moreover, during a bull market and especially during a bubble, there may be very few stocks worth buying. Fundamental analysis is designed to prevent one from overpaying for a stock, so even if there is interesting volume and price movement for the stock, there should still be no signal if that action happens well beyond the stock's fair price. (Otherwise, it isn't fundamental analysis — it's technical analysis.) Whereas technical analysis can, by definition, generate far more signals because it largely ignores the fundamentals, which can make even an overvalued stock's movement interesting enough to generate signals." What you are seeing is the effects of inflation. As money becomes less valuable it takes more of it to buy physical things, be they commodities, shares in a company's stock, and peoples time (salaries).  Just about the only thing that doesn't track inflation to some degree is cash itself or money in an account since that is itself what is being devalued.  So the point of all this is, buying anything (a house, gold, stocks) that doesn't depreciate (a car) is something of a hedge against inflation. However, don't be tricked (as many are) into thinking that house just made you a tidy sum just because it went up in value so much over x years. Remember 1) All the other houses and things you'd spend the money on are a lot more expensive now too; and 2) You put a lot more money into a house than the mortgage payment (taxes, insurance, maintenance, etc.) I'm with the others though. Don't get caught up in the gold bubble. Doing so now is just speculation and has a lot of risk associated with it. Diversification is a risk-mitigation strategy. When you invest in equities, you generally get a higher rate of return than a fixed income investment. But you have risks... a single company's market value can decline for all sorts of reasons, including factors outside of the control of management. Diversification lets you spread risk and concentrate on sectors that you feel offer the best value. Investing outside of your currency zone allows you to diversify more, but also introduces currency risks, which require a whole other level of understanding. Today, investing in emerging markets is very popular for US investors because these economies are booming and US monetary policy has been weakening the dollar for some time. A major bank failure in China or a flip to a strong dollar policy could literally implode those investments overnight. At the end of the day, invest in what you understand. Know the factors that can lower your investment value. It's an SEC standard for certain items. It is NOT indicative of fair market value. It could be useful to compare companies to each other, but again, would not indicate intrinsic value.  Does it make sense, for example, to discount Saudi Aramco at the same exact rate as BP or Exxon? On NYSE it isn't the equity which is listed but is an ADR(American Depositary Receipt). Source A negotiable certificate issued by a U.S. bank representing a specified number of shares (or one share) in a foreign stock that is traded on a U.S. exchange. ADRs are denominated in U.S. dollars, with the underlying security held by a U.S. financial institution overseas. ADRs help to reduce administration and duty costs that would otherwise be levied on each transaction. Else people would make a killing on the arbitrage opportunity. Frankly speaking arbitrage opportunities are more or less non existent. They occur for maybe seconds or milliseconds and the HFT firms and banks trade on it to remove the arbitrage.