Often used in risk arbitrage. Federal legislation enacted in 1968 (and now comprises Rules 13d and 14d of the Security Exchange Act of 1934) that imposes requirements with respect to public tender offers .
WILLIAMS ACT
Meaning of WILLIAMS ACT in English
Campbell R. Harvey. Hypertextual finance English glossary. Английский словарь гипертекстовых финансов. 2012