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  2. Private Securities Litigation Reform Act - Wikipedia

    en.wikipedia.org/wiki/Private_Securities...

    The Private Securities Litigation Reform Act of 1995, Pub. L. 104–67 (text) (PDF), 109 Stat. 737 (codified as amended in scattered sections of 15 U.S.C.) ("PSLRA") implemented several substantive changes in the United States that have affected certain cases brought under the federal securities laws, including changes related to pleading ...

  3. Efficient-market hypothesis - Wikipedia

    en.wikipedia.org/wiki/Efficient-market_hypothesis

    A replication of Martineau (2022). The efficient-market hypothesis ( EMH) [ a] is a hypothesis in financial economics that states that asset prices reflect all available information. A direct implication is that it is impossible to "beat the market" consistently on a risk-adjusted basis since market prices should only react to new information.

  4. Big boy letter - Wikipedia

    en.wikipedia.org/wiki/Big_Boy_Letter

    Even more controversial than the letters themselves is the practice of buying securities subject to a big boy letter and then reselling the securities to a third party without disclosing the existence of the "big boy letter." This practice is the subject of ongoing litigation and debate among persons familiar with securities markets.

  5. Securities Class Action - Wikipedia

    en.wikipedia.org/wiki/Securities_Class_Action

    A securities class action ( SCA ), or securities fraud class action, is a lawsuit filed by investors who bought or sold a company's publicly traded securities within a specific period of time (known as a “class period”) and suffered economic injury as a result of violations of the securities laws . In cases involving misleading statements ...

  6. Securities fraud - Wikipedia

    en.wikipedia.org/wiki/Securities_fraud

    Securities fraud, also known as stock fraud and investment fraud, is a deceptive practice in the stock or commodities markets that induces investors to make purchase or sale decisions on the basis of false information. [ 1] [failed verification][ 2][ 3] The setups are generally made to result in monetary gain for the deceivers, and generally ...

  7. Legal psychology - Wikipedia

    en.wikipedia.org/wiki/Legal_psychology

    Together, legal psychology and forensic psychology form the field more generally recognized as "psychology and law". Following earlier efforts by psychologists to address legal issues, psychology and law became a field of study in the 1960s as part of an effort to enhance justice, though that originating concern has lessened over time.

  8. SEC Rule 10b-5 - Wikipedia

    en.wikipedia.org/wiki/SEC_Rule_10b-5

    SEC Rule 10b5-1, codified at 17 CFR 240.10b5-1, was enacted as a regulation by the SEC in 2000. [ 11] The SEC stated that Rule 10b5-1 was enacted in order to resolve an unsettled issue over the definition of insider trading, [ 12] which is prohibited by SEC Rule 10b-5. In March 2023, in the first-ever indictment for insider trading based on an ...

  9. United States securities regulation - Wikipedia

    en.wikipedia.org/wiki/United_States_Securities...

    Securities regulation in the United States is the field of U.S. law that covers transactions and other dealings with securities. The term is usually understood to include both federal and state-level regulation by governmental regulatory agencies, but sometimes may also encompass listing requirements of exchanges like the New York Stock ...