00511nam 2200169z- 450 9910693755303321(CKB)4970000000051114(EXLCZ)99497000000005111420240129c2002uuuu -u- -engSecurities markets : competition and multiple regulators heighten concerns about self-regulationWashington, D.CSecurities MarketsDOCUMENT9910693755303321Securities markets3426665UNINA