Global macro is the strategy of investing on a large scale around the world using economic theory to justify the decision making process. The strategy is typically based on forecasts and analysis about interest rates trends, the general flow of funds, political changes, government policies, inter-government relations, and other broad systemic factors.
Macro trader Yra Harris claims that "global macro" is really a new term, which used to be called "geopolitics." George Soros famously employed a global macro strategy when he sold pound sterling in 1992 at the time of the European Rate Mechanism debacle.
In an Opalesque Roundtable discussion of global macro, hedge fund manager John Burbank discussed the increasing importance and shift of private and institutional investors toward more global macro strategies. Burbank defined global macro as "having a reason to be long or short something that is bigger than a fundamental stock view."
Global macro trading 
Global macro trading strategies are based on educated guesses about the macroeconomic developments of the world. Mike Novogratz, president of hedge fund giant Fortress Investment Group, discussed global macro trading in his video interview. Novogratz described global macro strategies as monitoring these macroeconomic stories, such as global imbalances, business cycles, the survival of the Euro, and changing growth models of emerging economies. He says that there is an inherent difference between global macro fund managers and traditional equity managers. Most long/short equity managers started in research as analysts and look to follow these macroeconomic stories based on what positions they believe in and stock positions they rely on.
On the other hand, global macro traders and managers come primarily from the risk side of trading. For macro traders and managers, the primary element in decision-making is risk, because when investing in such a speculative world there are so many risk factors and moving data points that they must take into account. Macro traders are not fundamentalists; they rely on risk management and staying liquid to avoid a liquidity crisis. In 2007 and 2008, with the credit bubble where there was a long period of low volatility and illiquidity, many global macro funds found themselves with liquidity problems.
- Introduction to Global Macro Hedge Funds
- Global Macro Index
- Global Macro Analyst/Trader For Free Advice
Further reading