---identifier: "/us/cfr/t17/s200.66"source: "ecfr"legal_status: "authoritative_unofficial"title: "17 CFR § 200.66 - Investigations."title_number: 17title_name: "Commodity and Securities Exchanges"section_number: "200.66"section_name: "Investigations."chapter_name: "SECURITIES AND EXCHANGE COMMISSION"part_number: "200"part_name: "ORGANIZATION; CONDUCT AND ETHICS; AND\ INFORMATION AND REQUESTS"positive_law: falsecurrency: "2026-04-05"last_updated: "2026-04-05"format_version: "1.1.0"generator: "[email protected]"authority: "5 U.S.C. 552, 552a, 552b, and 557; 11 U.S.C. 901 and 1109(a); 15 U.S.C. 77c, 77e, 77f, 77g, 77h, 77j, 77 77q, 77s, 77u, 77z-3, 77ggg(a), 77hhh, 77sss, 77uuu, 78b, 78c(b), 78d, 78d-1, 78d-2, 78e, 78f, 78g, 78h, 78i, 78k, 78k-1, 78 78m, 78n, 78 78-4, 78q, 78q-1, 78t-1, 78u, 78w, 78(d), 78mm, 78eee, 80a-8, 80a-20, 80a-24, 80a-29, 80a-37, 80a-41, 80a-44(a), 80a-44(b), 80b-3, 80b-4, 80b-5, 80b-9, 80b-10(a), 80b-11, 7202, and 7211 29 U.S.C. 794; 44 U.S.C. 3506 and 3507; Reorganization Plan No. 10 of 1950 (15 U.S.C. 78d); sec. 8G, Pub. L. 95-452, 92 Stat. 1101 (5 U.S.C. App.); sec. 913, Pub. L. 111-203, 124 Stat. 1376, 1827; sec. 3(a), Pub. L. 114-185, 130 Stat. 538; E.O. 11222, 30 FR 6469, 3 CFR, 1964-1965 Comp., p. 36; E.O. 12356, 47 FR 14874, 3 CFR, 1982 Comp., p. 166; E.O. 12600, 52 FR 23781, 3 CFR, 1987 Comp., p. 235; Information Security Oversight Office Directive No. 1, 47 FR 27836; and 5 CFR 735.104 and 5 CFR parts 2634 and 2635, unless otherwise noted."regulatory_source: "25 FR 6719, July 15, 1960, unless otherwise noted."cfr_part: "200"---
Identifier
/us/cfr/t17/s200.66
Currency
2026-04-05
Positive Law
No
Updated
2026-04-05
Chapter
Securities and Exchange Commission
Authority
5 U.S.C. 552, 552a, 552b, and 557; 11 U.S.C. 901 and 1109(a); 15 U.S.C. 77c, 77e, 77f, 77g, 77h, 77j, 77 77q, 77s, 77u, 77z-3, 77ggg(a), 77hhh, 77sss, 77uuu, 78b, 78c(b), 78d, 78d-1, 78d-2, 78e, 78f, ... 5 U.S.C. 552, 552a, 552b, and 557; 11 U.S.C. 901 and 1109(a); 15 U.S.C. 77c, 77e, 77f, 77g, 77h, 77j, 77 77q, 77s, 77u, 77z-3, 77ggg(a), 77hhh, 77sss, 77uuu, 78b, 78c(b), 78d, 78d-1, 78d-2, 78e, 78f, 78g, 78h, 78i, 78k, 78k-1, 78 78m, 78n, 78 78-4, 78q, 78q-1, 78t-1, 78u, 78w, 78(d), 78mm, 78eee, 80a-8, 80a-20, 80a-24, 80a-29, 80a-37, 80a-41, 80a-44(a), 80a-44(b), 80b-3, 80b-4, 80b-5, 80b-9, 80b-10(a), 80b-11, 7202, and 7211 29 U.S.C. 794; 44 U.S.C. 3506 and 3507; Reorganization Plan No. 10 of 1950 (15 U.S.C. 78d); sec. 8G, Pub. L. 95-452, 92 Stat. 1101 (5 U.S.C. App.); sec. 913, Pub. L. 111-203, 124 Stat. 1376, 1827; sec. 3(a), Pub. L. 114-185, 130 Stat. 538; E.O. 11222, 30 FR 6469, 3 CFR, 1964-1965 Comp., p. 36; E.O. 12356, 47 FR 14874, 3 CFR, 1982 Comp., p. 166; E.O. 12600, 52 FR 23781, 3 CFR, 1987 Comp., p. 235; Information Security Oversight Office Directive No. 1, 47 FR 27836; and 5 CFR 735.104 and 5 CFR parts 2634 and 2635, unless otherwise noted.
# 200.66 Investigations.The power to investigate carries with it the power to defame and destroy. In determining to exercise their investigatory power, members should concern themselves only with the facts known to them and the reasonable inferences from those facts. A member should never suggest, vote for, or participate in an investigation aimed at a particular individual for reasons of animus, prejudice or vindictiveness. The requirements of the particular case alone should induce the exercise of the investigatory power, and no public pronouncement of the pendency of such an investigation should be made in the absence of reasonable evidence that the law has been violated and that the public welfare demand it.