Side-by-side on the metrics that actually drive the student's call. Sources: Vault 2027, AmLaw 200 FY2025, and reported Chambers records from the years shown.
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Est. 1879
Sullivan & Cromwell LLP is a 1,000-plus-attorney firm, Vault #5 / AmLaw #25. Jurisdiction-specific Chambers rankings include Band 1 in Corporate Crime & Investigations, Corporate/M&A, and Corporate/M&A: Takeover Defense. Operates from 11 offices worldwide.
Est. 1866 · Chicago
Sidley Austin LLP is a 2,000-plus-attorney global firm, Vault #11 / AmLaw #6, founded in Chicago, IL. Jurisdiction-specific Chambers rankings include Band 1 in Accountant and Auditor Liability, Banking & Finance, and Capital Markets: Securitization: ABS.
Est. 1986
Quinn Emanuel Urquhart & Sullivan, LLP is a 1,000-plus-attorney firm, Vault #14 / AmLaw #20. Jurisdiction-specific Chambers rankings include Band 1 in Antitrust: Mainly Plaintiff, Antitrust: Plaintiff, and Bankruptcy Litigation. Operates from 33 offices worldwide.
Shared results are listed once. Green marks only a lower reported Chambers band for the same exact practice, market and year. Records with a missing year or market are not compared. Historical records are retained; individual ranking verification status is not available.
Rank differences
Data sources: Vault 2027, AmLaw 200 FY2025, and reported Chambers records from the years shown. Chambers record counts can span years and reporting coverage varies; missing years or markets are not compared. Current Chambers bands were checked against each firm’s Chambers profile on Sep 26, 2026; where Chambers splits a table, every Elite firm ranks above every Highly Regarded firm. Missing values shown as “-”.
Firm-only and additional rankings remain available on each firm profile so missing coverage is not mistaken for a head-to-head loss.