eCFR Analyzer

Securities and Exchange Commission (SEC)

1,649,090Words in 56 parts
10.7Restriction density (per 1,000 words)
25.0Reading grade
61.6%Unchanged since 2017
14Flagged parts
2026-10-28Last change

Section changes per year

From the eCFR versioner, for the parts that the agency owns now. Before 2017 is the baseline load.

Text and size

Sentences
49.7 words on average; 41.0% over 40 words; 36.3% passive; 16.9 cross-references per 1,000 words
Sentence types
definition 7.0% · prohibition 3.8% · paperwork 13.8% · obligation 19.7% · permission 7.7% · other 48.1%
Checksum
a527cdad00da8dda1604edac58fda794bdf0a9c272539e64f5d4ccca268fc28c

Review candidates in this agency

RankPartWordsScore
22 top 10% 17 CFR 240 GENERAL RULES AND REGULATIONS, SECURITIES EXCHANGE ACT OF 1934
High signals: Size +4.0 SD · Reading grade +2.8 SD · Paperwork share +1.4 SD · Directive share +1.1 SD
 579,391 1.59
51 top 10% 17 CFR 239 FORMS PRESCRIBED UNDER THE SECURITIES ACT OF 1933
High signals: Reading grade +3.3 SD · Paperwork share +3.0 SD · Size +1.1 SD · Directive share +1.1 SD
 21,732 1.32
53 top 10% 17 CFR 270 RULES AND REGULATIONS, INVESTMENT COMPANY ACT OF 1940
High signals: Reading grade +3.3 SD · Size +2.6 SD
 120,704 1.32
65 top 10% 17 CFR 260 GENERAL RULES AND REGULATIONS, TRUST INDENTURE ACT OF 1939
High signals: Paperwork share +3.5 SD · Directive share +1.6 SD
 10,477 1.28
124 top 10% 17 CFR 230 GENERAL RULES AND REGULATIONS, SECURITIES ACT OF 1933
High signals: Size +2.9 SD · Reading grade +2.3 SD
 162,831 1.08
173 top 10% 17 CFR 232 REGULATION S-T—GENERAL RULES AND REGULATIONS FOR ELECTRONIC FILINGS
High signals: Paperwork share +2.4 SD · Reading grade +1.9 SD · Size +1.2 SD
 25,358 1.03
181 top 10% 17 CFR 242 REGULATIONS M, SHO, ATS, AC, NMS, SE, AND SBSR, AND CUSTOMER MARGIN REQUIREMENTS FOR SECURITY FUTURES
High signals: Size +2.4 SD · Reading grade +1.8 SD · Paperwork share +1.1 SD · Directive share +1.1 SD
 102,061 1.03
216 top 10% 17 CFR 249 FORMS, SECURITIES EXCHANGE ACT OF 1934
High signals: Paperwork share +4.0 SD · Directive share +1.1 SD
 12,988 0.97
301 top 10% 17 CFR 245 REGULATION BLACKOUT TRADING RESTRICTION
High signals: Reading grade +5.7 SD
 4,236 0.89
318 top 10% 17 CFR 246 CREDIT RISK RETENTION
High signals: Reading grade +3.8 SD · Size +1.3 SD
 27,602 0.87
319 top 10% 17 CFR 300 RULES OF THE SECURITIES INVESTOR PROTECTION CORPORATION
High signals: Reading grade +2.0 SD · Directive share +1.4 SD
 4,709 0.87
408 top 10% 17 CFR 201 RULES OF PRACTICE
High signals: Size +1.9 SD · Paperwork share +1.2 SD
 52,351 0.81
473 top 10% 17 CFR 227 REGULATION CROWDFUNDING, GENERAL RULES AND REGULATIONS
High signals: Reading grade +2.0 SD · Paperwork share +1.2 SD
 17,365 0.77
566 top 10% 17 CFR 274 FORMS PRESCRIBED UNDER THE INVESTMENT COMPANY ACT OF 1940
High signals: Paperwork share +4.4 SD
 4,306 0.74
853 17 CFR 275 RULES AND REGULATIONS, INVESTMENT ADVISERS ACT OF 1940
High signals: Reading grade +1.7 SD · Size +1.5 SD
 33,304 0.62
1,118 17 CFR 200 ORGANIZATION; CONDUCT AND ETHICS; AND INFORMATION AND REQUESTS
High signals: Size +2.2 SD · Reading grade +1.2 SD
 77,737 0.52
1,350 17 CFR 243 REGULATION FD
High signals: Reading grade +2.1 SD · Paperwork share +1.5 SD
 1,833 0.45
1,414 17 CFR 203 RULES RELATING TO INVESTIGATIONS
High signals: Directive share +1.4 SD · Restriction density +1.1 SD
 1,087 0.44
1,783 17 CFR 302 ORDERLY LIQUIDATION OF COVERED BROKERS OR DEALERS
High signals: Directive share +1.4 SD · Restriction density +1.3 SD
 3,731 0.34
1,874 17 CFR 205 STANDARDS OF PROFESSIONAL CONDUCT FOR ATTORNEYS APPEARING AND PRACTICING BEFORE THE COMMISSION IN THE REPRESENTATION OF AN ISSUER
High signals: Reading grade +2.4 SD
 3,956 0.31
1,994 17 CFR 229 STANDARD INSTRUCTIONS FOR FILING FORMS UNDER SECURITIES ACT OF 1933, SECURITIES EXCHANGE ACT OF 1934 AND ENERGY POLICY AND CONSERVATION ACT OF 1975—REGULATION S-K
High signals: Size +2.9 SD
 173,532 0.28
2,022 17 CFR 210 FORM AND CONTENT OF AND REQUIREMENTS FOR FINANCIAL STATEMENTS, SECURITIES ACT OF 1933, SECURITIES EXCHANGE ACT OF 1934, INVESTMENT COMPANY ACT OF 1940, INVESTMENT ADVISERS ACT OF 1940, AND ENERGY POLICY AND CONSERVATION ACT OF 1975
High signals: Size +2.2 SD
 75,455 0.27
2,159 17 CFR 255 PROPRIETARY TRADING AND CERTAIN INTERESTS IN AND RELATIONSHIPS WITH COVERED FUNDS
High signals: Reading grade +2.9 SD · Size +1.4 SD
 32,261 0.24
2,185 17 CFR 204 RULES RELATING TO DEBT COLLECTION
High signals: none above 1 SD; ranked by the combined score
 11,311 0.23
2,196 17 CFR 244 REGULATION G
High signals: Reading grade +1.9 SD
 1,177 0.23

Score: the mean of six signals, in standard deviations (SD). Across the CFR, the top 641 of 6,402 ranked parts (10%) get a flag for review; this list shows 25. A flag is not a finding.

Statutes behind the most text

  • 15 U.S.C. 77f: 1,016,770 words in 7 parts (61.7% of this agency's text)
  • 18 U.S.C. 1350: 911,973 words in 5 parts (55.3% of this agency's text)
  • 15 U.S.C. 80a: 884,822 words in 7 parts (53.7% of this agency's text)
  • 15 U.S.C. 77c: 877,526 words in 6 parts (53.2% of this agency's text)
  • 15 U.S.C. 77b: 742,222 words in 2 parts (45.0% of this agency's text)
  • 15 U.S.C. 78c: 726,184 words in 6 parts (44.0% of this agency's text)
  • 15 U.S.C. 77g: 711,633 words in 5 parts (43.2% of this agency's text)
  • 15 U.S.C. 78d: 657,128 words in 2 parts (39.8% of this agency's text)
  • 15 U.S.C. 78: 615,963 words in 4 parts (37.4% of this agency's text)
  • 15 U.S.C. 78q: 612,757 words in 3 parts (37.2% of this agency's text)

From the authority notes. A citation is not proof that the statute requires the rule.

Largest parts

  • 17 CFR 240: GENERAL RULES AND REGULATIONS, SECURITIES EXCHANGE ACT OF 1934 (579,391 words)
  • 17 CFR 229: STANDARD INSTRUCTIONS FOR FILING FORMS UNDER SECURITIES ACT OF 1933, SECURITIES EXCHANGE ACT OF 1934 AND ENERGY POLICY AND CONSERVATION ACT OF 1975—REGULATION S-K (173,532 words)
  • 17 CFR 230: GENERAL RULES AND REGULATIONS, SECURITIES ACT OF 1933 (162,831 words)
  • 17 CFR 270: RULES AND REGULATIONS, INVESTMENT COMPANY ACT OF 1940 (120,704 words)
  • 17 CFR 242: REGULATIONS M, SHO, ATS, AC, NMS, SE, AND SBSR, AND CUSTOMER MARGIN REQUIREMENTS FOR SECURITY FUTURES (102,061 words)
  • 17 CFR 200: ORGANIZATION; CONDUCT AND ETHICS; AND INFORMATION AND REQUESTS (77,737 words)
  • 17 CFR 210: FORM AND CONTENT OF AND REQUIREMENTS FOR FINANCIAL STATEMENTS, SECURITIES ACT OF 1933, SECURITIES EXCHANGE ACT OF 1934, INVESTMENT COMPANY ACT OF 1940, INVESTMENT ADVISERS ACT OF 1940, AND ENERGY POLICY AND CONSERVATION ACT OF 1975 (75,455 words)
  • 17 CFR 201: RULES OF PRACTICE (52,351 words)
  • 17 CFR 275: RULES AND REGULATIONS, INVESTMENT ADVISERS ACT OF 1940 (33,304 words)
  • 17 CFR 248: REGULATIONS S-P, S-AM, AND S-ID (32,423 words)

Reading grade and sentence types are approximate. Simple rules label each sentence; the first match wins.