The Supreme Court now needs the ticker symbol, not just the party name.
In January a Justice left an argued case over a company that had dropped out of the caption but was still a party in the district court. A month later the Court revised four of its filing rules, and one unrelated line changed what counts as filing on time. Three consequences for practicing attorneys.
By Helena Harper, Editorial Director
A letter four days before argument
On January 8, 2026, the Clerk of the Supreme Court of the United States, Scott S. Harris, wrote to counsel in No. 24-813, Chevron USA v. Plaquemines Parish. The letter informed the parties that Justice Alito had determined he would not continue to participate, because of a financial interest in ConocoPhillips, the parent corporation of Burlington Resources Oil and Gas Company. Argument was held four days later, on January 12. When the case was decided on April 17, 2026, the report carried the standard notation that Justice Alito took no part in the decision.
The letter explains why the conflict surfaced so late. Burlington had been a petitioner. It told the Court by letter that it was "withdrawing" from the petition, and that neither it nor ConocoPhillips would be "a party to (or have any other involvement in)" the case. On June 2, 2025, the petition was dismissed as to Burlington. Later briefing, the Clerk wrote, noted that Burlington remained a party in the district court. The company had left the caption in the Supreme Court while staying in the proceeding below.
What the Court did
On February 17, 2026, the Court announced that it had adopted revisions to its Rules and put new software into service. The software runs automated recusal checks by comparing the parties and attorneys in a case against lists maintained by each Justice's chambers. The Court described the checks as serving "in addition to existing conflict-checking procedures in chambers." Most of the rule revisions exist to feed that system.
The revisions were adopted February 17, 2026 and took effect March 16, 2026. Rule 48, the rule that states when the Rules take effect, was updated to say so. Four rules of practice changed: Rule 14 (content of a petition for certiorari), Rule 15 (briefs in opposition and waivers), Rule 24 (briefs on the merits) and Rule 29 (filing, service and corporate listing). The Court's Clerk's Comments accompany the revisions and, by their own terms, are not part of the Rules. Ahead of the effective date the Clerk's Office reissued its filing guides, and the booklet-format specification chart carries the same March 16 date.
The party list, and the ticker
Rule 14.1(b)(i) requires a certiorari petition to contain a list of all parties to the proceeding in the court whose judgment is sought to be reviewed. Until March it carried a parenthetical exception: the list could be omitted when the caption of the case contained the names of all the parties. That exception has been struck. In its place the rule now asks for the parties' respective stock ticker symbols, if any.
The Clerk's Comment explains the logic without ambiguity. The screening system reads the data in the Parties to the Proceeding section of a filing, so it matters that every party appear there and not only in the case caption. Ticker symbols are added because they give the system a reliable handle on businesses that have them.
The same two ideas run through the other rules. Rule 15.2 now says a brief in opposition should identify any parties to the proceeding that the petition failed to identify under Rule 14.1(b)(i), with their ticker symbols, alongside the existing duty to flag directly related cases the petition missed. Rule 24.1(b) picks up the ticker requirement for merits briefs and loses the same caption exception. And Rule 24.2, which lets a respondent skip items already presented by the other side, no longer lists the party list among them. On the merits, a respondent must supply its own listing even when the petitioner's was faultless.
The waiver is no longer a formality
The most consequential addition is new Rule 15.9, because it reaches parties who had planned to say nothing at all. A respondent who waives the right to file a brief in opposition should now use that waiver to identify any parties the petition left out, with ticker symbols where they exist.
More than that, the rule makes the filing itself mandatory in one situation. Where a respondent is a nongovernmental corporation that has a parent corporation, or a publicly held company owns ten percent or more of its stock, the rule requires that either a brief in opposition or a waiver be filed, and that the document include the information called for by Rule 29.6. Rule 29.6 is the corporate disclosure rule, and it too was amended to add ticker symbols. It also carries a continuing obligation that now travels with these respondents: when the identity of the parent or of a ten percent holder materially changes, counsel must promptly inform the Clerk by letter and enclose the amendment needed to bring the statement current.
One change that has nothing to do with conflicts
Buried in the same order is a revision of a different character. Rule 29.2 lists the ways a document can be timely filed. Before March 16 there were three: receipt by the Clerk in paper form within the time specified, a qualifying United States Postal Service postmark dated on or before the last day, or delivery to a third-party commercial carrier on or before the last day for delivery to the Clerk within three calendar days. Every route ran through paper.
The revision adds a fourth. A document is timely filed if it is properly submitted to the Court's electronic filing system on or before the last day for filing. The paper copies are still required, but they now follow: they must be delivered or mailed to the Clerk through one of the first three methods within three days of the electronic submission.
The Clerk's Comment says the change is designed to avoid a filer wrongly believing that an electronic submission was already a timely filing.
The comment spells out the stakes it is guarding against. A filing that misses the deadline is untimely, and in the case of a certiorari petition in a civil action, an untimely petition deprives the Court of jurisdiction to consider it.
What has not changed
Automated conflict screening is not new to the federal courts. The Judicial Conference of the United States adopted a mandatory conflict screening policy on September 19, 2006 and amended it on March 15, 2022. That policy requires courts to implement automated screening for financial conflicts, to screen at or before assignment and at least weekly, and to rescreen whenever a judge updates a financial recusal list or a new party is added. It also requires each court to take reasonable steps to ensure parties supply the underlying information, including corporate parent information.
The policy's own scope note is the point. It reaches the courts of appeals, the district courts, the Court of International Trade, the Court of Federal Claims and the bankruptcy courts, and it states expressly that it does not extend to the Supreme Court. Some circuits had already moved on tickers on their own. The Ninth Circuit's disclosure guidance asks that a corporate entity be identified by its registered corporate name and, if publicly listed, its stock symbol. The Law360 analysis of the revisions by Jill Jacobson and Robert Niles-Weed of Weil, Gotshal & Manges notes the same practice in the Ninth and Eleventh Circuits and suggests other circuits may follow the Supreme Court's lead.
Three consequences for practicing attorneys
What changes, in practice, for anyone who files in the Supreme Court:
The caption no longer does the work
Rule 14.1(b)(i) used to excuse the list of parties when the caption already named everyone. That escape clause is gone. Every party to the proceeding below belongs in the Parties to the Proceeding section, with a stock ticker symbol next to any that has one, because that section is what the Court's screening software reads.
Waiving a response is no longer a one-page form
A corporate respondent with a parent company, or with a publicly held company owning ten percent or more of its stock, must now file either a brief in opposition or a waiver, and that document has to carry the Rule 29.6 disclosure. On the merits, a respondent can no longer lean on the petitioner's party list.
The deadline runs on the electronic submission
New Rule 29.2(4) makes a proper electronic submission on the last day a timely filing. The required paper copies then follow through the existing mail, courier, or hand-delivery routes within three days. Two dates now sit where practitioners used to calendar one.
It is worth being careful about cause and effect. The Court did not say that any particular recusal prompted the revisions, and the announcement describes the changes as support for the software rather than a response to an incident. The January letter is useful because it shows precisely the gap the amended listing rules address: a company can be out of a caption and still be in the case, and a party list built from the caption will not say so.
The obligations, meanwhile, are unremarkable to fill and easy to forget. A ticker symbol is a lookup. A full party list is a reading of the docket below. A waiver of the right to respond is a form that, for one class of corporate respondent, is now a filing that has to be made rather than one that can be skipped.
A conflict check is only as good as the names it is given. For most of the Court's history those names arrived in prose, in whatever combination of caption and narrative counsel thought sufficient.
Since March 16 they arrive as a list, in a fixed place, with a symbol attached where one exists. The work is small. The consequence of skipping it now belongs to the filer.
Archivar
The Archivar Editorial Desk
Fact-checked against the authorities listed below. This article is for general informational purposes and is not legal advice.
Sources: Supreme Court of the United States, Revisions to Rules of the Supreme Court of the United States, adopted February 17, 2026, effective March 16, 2026 (Rules 14, 15, 24, 29 and 48, with Clerk's Comments); Supreme Court of the United States, press release of February 17, 2026, and Rules Guidance page; Letter from Scott S. Harris, Clerk of the Court, January 8, 2026, in No. 24-813, Chevron USA v. Plaquemines Parish, and the docket for that case; Administrative Office of the U.S. Courts, Guide to Judiciary Policy, Volume 2, Part C, Chapter 4, Conflicts Screening Requirements; United States Court of Appeals for the Ninth Circuit, Disclosure Statements guidance and Form 34; Jill Jacobson and Robert Niles-Weed, "What To Know About Supreme Court's New Recusal Rules," Law360, March 12, 2026; The Volokh Conspiracy at Reason, February 18, 2026; Minnesota Lawyer, February 17, 2026.
