Transparency (market) in the context of "Efficient-market hypothesis"

The global financial system is the worldwide framework of legal agreements, institutions, and both formal and informal economic action that together facilitate international flows of financial capital for purposes of investment and trade financing. Since emerging in the late 19th century during the first modern wave of economic globalization, its evolution is marked by the establishment of central banks, multilateral treaties, and intergovernmental organizations aimed at improving the transparency, regulation, and effectiveness of international markets. In the late 1800s, world migration and communication technology facilitated unprecedented growth in international trade and investment. At the onset of World War I, trade contracted as foreign exchange markets became paralyzed by money market illiquidity. Countries sought to defend against external shocks with protectionist policies and trade virtually halted by 1933, worsening the effects of the global Great Depression until a series of reciprocal trade agreements slowly reduced tariffs worldwide. Efforts to revamp the international monetary system after World War II improved exchange rate stability, fostering record growth in global finance.

A series of currency devaluations and oil crises in the 1970s led most countries to float their currencies. The world economy became increasingly financially integrated in the 1980s and 1990s due to capital account liberalization and financial deregulation. A series of financial crises in Europe, Asia, and Latin America followed with contagious effects due to greater exposure to volatile capital flows. The 2008 financial crisis, which originated in the United States, quickly propagated among other nations and is recognized as the catalyst for the worldwide Great Recession. A market adjustment to Greece's noncompliance with its monetary union in 2009 ignited a sovereign debt crisis among European nations known as the Eurozone crisis. The history of international finance shows a U-shaped pattern in international capital flows: high prior to 1914 and after 1989, but lower in between. The volatility of capital flows has been greater since the 1970s than in previous periods.

Banking regulation and supervision refers to a form of financial regulation which subjects banks to certain requirements, restrictions and guidelines, enforced by a financial supervisory authority generally referred to as banking supervisor, with semantic variations across jurisdictions. By and large, banking regulation and supervision aims at ensuring that banks are safe and sound and at fostering market transparency between banks and the individuals and corporations with whom they conduct business.

Its main component is prudential regulation and supervision whose aim is to ensure that banks are viable and resilient ("safe and sound") so as to reduce the likelihood and impact of bank failures that may trigger systemic risk. Prudential regulation and supervision requires banks to control risks and hold adequate capital as defined by capital requirements, liquidity requirements, the imposition of concentration risk (or large exposures) limits, and related reporting and public disclosure requirements and supervisory controls and processes. Other components include supervision aimed at enforcing consumer protection, sometimes also referred to as conduct-of-business (or simply "conduct") regulation and supervision of banks, and anti–money laundering supervision that aims to ensure banks implement the applicable AML/CFT framework. Deposit insurance and resolution authority are also parts of the banking regulatory and supervisory framework. Bank (prudential) supervision is a form of "microprudential" policy to the extent it applies to individual credit institutions, as opposed to macroprudential regulation whose intent is to consider the financial system as a whole.

In finance, a dark pool (also black pool) is a private forum (alternative trading system or ATS) for trading securities, derivatives, and other financial instruments. Liquidity on these markets is called dark pool liquidity. The bulk of dark pool trades represent large trades by financial institutions that are offered away from public exchanges like the New York Stock Exchange and the NASDAQ, so that such trades remain confidential and outside the purview of the general investing public. The fragmentation of electronic trading platforms has allowed dark pools to be created, and they are normally accessed through crossing networks or directly among market participants via private contractual arrangements. Generally, dark pools are not available to the public, but in some cases, they may be accessed indirectly by retail investors and traders via retail brokers.

One of the main advantages for institutional investors in using dark pools is for buying or selling large blocks of securities without showing their hand to others and thus avoiding market impact, as neither the size of the trade nor the identity are revealed until some time after the trade is filled. However, it also means that some market participants—retail investors—are disadvantaged, since they cannot see the orders before they are executed. Prices are agreed upon by participants in the dark pools, so the market is no longer transparent. A 2025 study found that dark trading is harmful to financial markets, as it either reduced market efficiency or entailed welfare losses.

As an ethic that spans science, engineering, business, and the humanities, transparency is operating in such a way that it is easy for others to see what actions are performed. Transparency implies openness, communication, and accountability.

Transparency is practiced in companies, organizations, administrations, and communities. For example, in a business relation, fees are clarified at the outset by a transparent agent, so there are no surprises later. This is opposed to keeping this information hidden which is "non-transparent". A practical example of transparency is also when a cashier makes changes after a point of sale; they offer a transaction record of the items purchased (e.g., a receipt) as well as counting out the customer's change.

A money changer is a person or organization whose business is the exchange of coins or currency of one country for that of another. This trade was a predecessor of modern banking.

The advent of paper money in the mid-17th century and the development of modern banking and floating exchange rates in the 20th century allowed a currency exchange market to develop. This provided a way for banks and other specialist financial companies such as bureaux de change and other similar financial entities to easily change one country's money for another, and with the added confidence of transparency.