TRO Case
1:2026-cv-05474 Susquehanna Securites, LLC et al v. John Does 1 Through 100
Case No.
1:2026-cv-05474
Filing Date
Jun 29, 2026
Plaintiff
Susquehanna Securites, LLC et al
Court
Southern District of New York
Docket Entries (78)
Jul 24, 2026
NOTICE OF APPEARANCE by Bo Garfinkel on behalf of Susquehanna Investment Group, Susquehanna Securities, LLC.
Jul 24, 2026
***SEALED***CERTIFICATE OF SERVICE. Document filed by Susquehanna Investment Group, Susquehanna Securities, LLC. Motion or Order to File Under Seal: 62.
Jul 24, 2026
ORDER granting [55] Letter Motion to Seal. GRANTED. The Clerk of Court is respectfully directed to terminate the motion at ECF No. 55. SO ORDERED. (Signed by Judge Arun Subramanian on 7/24/2026)
Jul 24, 2026
LETTER MOTION to Seal addressed to Judge Arun Subramanian from John N. Orsini dated July 24, 2026. Document filed by Susquehanna Investment Group, Susquehanna Securities, LLC.
Jul 23, 2026
LETTER MOTION to Seal addressed to Judge Arun Subramanian from John N. Orsini dated July 23, 2026. Document filed by Susquehanna Investment Group, Susquehanna Securities, LLC.
Jul 23, 2026
***SEALED***CERTIFICATE OF SERVICE. Document filed by Susquehanna Investment Group, Susquehanna Securities, LLC. Motion or Order to File Under Seal: [55].
Jul 23, 2026
JOINT LETTER addressed to Judge Arun Subramanian from John N. Orsini dated July 23, 2026 Document filed by Susquehanna Investment Group, Susquehanna Securities, LLC.
Jul 23, 2026
MEMO ENDORSEMENT on re: [54] Letter filed by Susquehanna Investment Group, Susquehanna Securities, LLC, ENDORSEMENT: The proposed schedule is adopted. The Court will hold a hearing on the motion for a preliminary injunction at 2 p.m. on August 14, 2026, in Courtroom 15A of the 500 Pearl Street courthouse. SO ORDERED. (Signed by Judge Arun Subramanian on 7/23/2026) (Responses due by 7/30/2026, Replies due by 8/6/2026., Status Conference set for 8/14/2026 at 02:00 PM in Courtroom 15A, 500 Pearl Street, New York, NY 10007 before Judge Arun Subramanian.)
Jul 23, 2026
DECLARATION of Yang Jingyao in Support re: [58] Memorandum of Law in Opposition. Document filed by Yang Jingyao.
Jul 23, 2026
MEMORANDUM OF LAW in Opposition re: [5] Memorandum of Law in Support. Document filed by Yang Jingyao.
Jul 21, 2026
ORDER granting 51 Letter Motion for Extension of Time to File Response/Reply. GRANTED. The extensions of the response deadline and the TRO with respect to Mr. Yang are granted. The Court encourages the parties to use the time to negotiate a potential injunction that they can agree upon. The Clerk of Court is respectfully directed to terminate the motion at ECF No. 51. SO ORDERED. Replies due by 7/28/2026. (Signed by Judge Arun Subramanian on 7/21/2026)
Jul 21, 2026
ORDER granting 48 Letter Motion for Extension of Time to File Response/Reply. GRANTED. The Clerk of Court is respectfully directed to terminate the motion at ECF No. 48. SO ORDERED. Responses due by 7/27/2026 Replies due by 8/3/2026. (Signed by Judge Arun Subramanian on 7/21/2026)
Jul 20, 2026
NOTICE OF APPEARANCE by Hannah Miller on behalf of Yang Jingyao.
Jul 20, 2026
LETTER MOTION for Extension of Time to File Response/Reply as to [5] Memorandum of Law in Support addressed to Judge Arun Subramanian from Katherine Burghardt Kramer dated 7/20/2026. Document filed by Yang Jingyao.
Jul 20, 2026
SECOND LETTER MOTION for Extension of Time to File Response/Reply as to 47 Order on Motion for Extension of Time to File Response/Reply, addressed to Judge Arun Subramanian from Minyao Wang dated 7/20/2026. Document filed by New Frontier Investment Management Limited.
Jul 20, 2026
NOTICE OF APPEARANCE by Katherine Burghardt Kramer on behalf of Yang Jingyao.
Jul 16, 2026
CONSENT LETTER MOTION for Extension of Time to File Response/Reply as to [39] Memo Endorsement, Set Deadlines, addressed to Judge Arun Subramanian from Minyao Wang dated July 16, 2026. Document filed by New Frontier Investment Management Limited.
Jul 16, 2026
ORDER granting [46] Letter Motion for Extension of Time to File Response/Reply. GRANTED. The filing deadlines and TRO extension are extended as stated. The parties should also use the time to discuss whether an injunction with a negotiated scope could be agreeable to both parties. The Clerk of Court is respectfully directed to terminate the motion at ECF No. 46. SO ORDERED. Responses due by 7/21/2026 Replies due by 7/27/2026. (Signed by Judge Arun Subramanian on 7/16/2026)
Jul 16, 2026
PROTECTIVE ORDER.regarding procedures to be followed that shall govern the handling of confidential material. (Signed by Judge Arun Subramanian on 7/16/2026)
Jul 15, 2026
PROPOSED PROTECTIVE ORDER. Document filed by Susquehanna Investment Group, Susquehanna Securities, LLC.
Jul 15, 2026
CERTIFICATE OF SERVICE. Document filed by Citadel Securities LLC.
Jul 13, 2026
CERTIFICATE OF SERVICE. Document filed by Susquehanna Investment Group, Susquehanna Securities, LLC.
Jul 13, 2026
JOINDER to join Application for a Preliminary Injunction. Document filed by Citadel Securities LLC.
Jul 10, 2026
MEMO ENDORSEMENT on re: 37 Letter filed by New Frontier Investment Management Limited. ENDORSEMENT: The Court is extending the TRO and will not rule on the preliminary injunction. at this time. Defendant New Frontier may file any opposition to the motion for a preliminary injunction no later than July 17, 2026. Any reply by plaintiffs will be due July 21, 2026. (Replies due by 7/21/2026., Responses due by 7/17/2026) (Signed by Judge Arun Subramanian on 7/10/2026)
Jul 10, 2026
ORDER : Citadel Securities motion to intervene is GRANTED. The temporary restraining order currently in force with respect to all defendants other than Wenlei Song, see Dkts. 10, 35, is extended to July 24, 2026 to allow plaintiffs to ascertain the identity of the other defendants and to effectuate service and notice of the motion for a preliminary injunction on those defendants. The hearing scheduled for July 10, 2026, is hereby CANCELLED. (Signed by Judge Arun Subramanian on 7/10/2026)
Jul 10, 2026
LETTER addressed to Judge Arun Subramanian from MINYAO WANG dated 7/10/2026 re: Service Status and Briefing Schedule. Document filed by New Frontier Investment Management Limited.
Jul 10, 2026
NOTICE OF APPEARANCE by Minyao Wang on behalf of New Frontier Investment Management Limited.
Jul 10, 2026
LETTER addressed to Judge Arun Subramanian from John N. Orsini dated July 10, 2026 re: Order entered on July 9, 2026 (ECF 34). Document filed by Susquehanna Investment Group, Susquehanna Securites, LLC.
Jul 09, 2026
LETTER addressed to Judge Arun Subramanian from Jonathan K. Youngwood dated July 9, 2026 Document filed by Citadel Securities LLC.
Jul 09, 2026
ORDER: The Court is in receipt of the letters filed by plaintiffs, the appearing defendant, and the proposed intervenor. In response to plaintiffs' most recent letter, their declarants need not appear at the hearing. In response to the appearing defendant's letter, the Court will enter the parties' stipulation concerning preliminary injunctive relief. The Court asks that plaintiffs meet and confer with the appearing parties, and by 10:00 am tomorrow, file a letter addressing (1) whether there is any opposition to the motion to intervene, and (2) what plaintiffs propose to address at the hearing and what relief they currently seek. Along these lines, the Court notes that plaintiffs have not filed any proof of service with respect to any other defendant, so the Court cannot issue a preliminary injunction with respect to any other defendant. See Fed. R. Civ. P. 65(a)(1). Should plaintiffs wish to extend or modify the temporary restraining order with respect to other defendants, they should explain the grounds for such an extension or modification. SO ORDERED. (Signed by Judge Arun Subramanian on 7/9/2026)
Jul 09, 2026
PROPOSED STIPULATION AND ORDER. Document filed by Wenlei Song.
Jul 09, 2026
LETTER addressed to Judge Arun Subramanian from John N. Orsini dated July 9, 2026 re: Hearing on Plaintiffs' Application for a Temporary Restraining Order and Order to Show Cause for a Preliminary Injunction. Document filed by Susquehanna Investment Group, Susquehanna Securites, LLC.
Jul 09, 2026
STIPULATION AND ORDER REGARDING DISSOLUTION OF TEMPORARY RESTRAINING ORDER AS TO DEFENDANT WENLEI SONG, ESTABLISHMENT OF ESCROW, AND ENTRY OF LIMITED PRELIMINARY INJUNCTION: NOW, THEREFORE, IT IS HEREBY STIPULATED AND AGREED, by and between Susquehanna and Song, by and through their undersigned counsel, and subject to the approval of the Court, as follows: Establishment of Escrow. Song shall be permitted as of the date of this stipulated order to withdraw $1.5 million worth of assets from the Account in order to cause those funds (the "Escrow Funds") to be deposited into an attorney escrow account maintained by Walden Haran as further set forth in this Order. SO ORDERED (Signed by Judge Arun Subramanian on 7/9/2026)
Jul 09, 2026
NOTICE OF APPEARANCE by Ivy Xiaotian Yao on behalf of Wenlei Song.
Jul 08, 2026
NOTICE OF APPEARANCE by Jared Lenow on behalf of Susquehanna Investment Group, Susquehanna Securites, LLC.
Jul 07, 2026
***NOTICE TO COURT REGARDING PROPOSED ORDER TO SHOW CAUSE WITHOUT EMERGENCY RELIEF. Document No. [20] Proposed Order to Show Cause Without Emergency Relief was reviewed and approved as to form.
Jul 07, 2026
***NOTICE TO COURT REGARDING PROPOSED ORDER TO SHOW CAUSE WITHOUT EMERGENCY RELIEF. Document No. [20] Proposed Order to Show Cause Without Emergency Relief was reviewed and approved as to form.
Jul 07, 2026
MEMO ENDORSEMENT on re: 12 Letter filed by Susquehanna Investment Group, Susquehanna Securites, LLC. ENDORSEMENT: The Request is approved. SO ORDERED. (Signed by Judge Arun Subramanian on 7/7/2026)
Jul 07, 2026
ORDER granting 24 Letter Motion for Extension of Time to File Response/Reply re 24 LETTER MOTION for Extension of Time to File Response/Reply by July 9th addressed to Judge Arun Subramanian from Barry Rashkover dated July 6, 2026. Responses by defendant(s) due by 7/9/2026 (HEREBY ORDERED by Judge Arun Subramanian)(Text Only Order)
Jul 07, 2026
***NOTICE TO COURT REGARDING PROPOSED ORDER TO SHOW CAUSE WITHOUT EMERGENCY RELIEF. Document No. 20 Proposed Order to Show Cause Without Emergency Relief was reviewed and approved as to form.
Jul 07, 2026
NOTICE OF APPEARANCE by Deanna Paul on behalf of Wenlei Song.
Jul 07, 2026
LETTER MOTION for Extension of Time to File Response/Reply by July 9th addressed to Judge Arun Subramanian from Barry Rashkover dated July 6, 2026. Document filed by Wenlei Song.
Jul 07, 2026
ORDER TO SHOW CAUSE : IT IS HEREBY: ORDERED, that the parties in the above-captioned case show cause before this Court, at the United States Courthouse, 500 Pearl Street, in the City, County, and State of New York, at 2:00 p.m. on July 10, 2026, why an order should not be issued (i) allowing Citadel Securities to intervene in this action pursuant to Rule 24 of the Federal Rules of Civil Procedure and (ii) directing that the proposed complaint attached as Exhibit A be deemed filed as of the date of the Court's order. IT IS FURTHER ORDERED, that any opposing papers shall be served and filed on or before July 7, 2026, and Citadel Securities shall serve and file any reply papers on or before July 9, 2026; IT IS FURTHER ORDERED, that service by ECF on the parties in the above-captioned case shall be deemed good and sufficient service thereof. Show Cause Response due by 7/7/2026. (Signed by Judge Arun Subramanian on 7/7/2026)
Jul 07, 2026
NOTICE OF APPEARANCE by Barry Wayne Rashkover on behalf of Wenlei Song.
Jul 07, 2026
***NOTICE TO COURT REGARDING PROPOSED ORDER TO SHOW CAUSE WITHOUT EMERGENCY RELIEF. Document No. 20 Proposed Order to Show Cause Without Emergency Relief was reviewed and approved as to form.
Jul 07, 2026
NOTICE OF APPEARANCE by Daniel Joseph Chirlin on behalf of Wenlei Song.
Jul 06, 2026
***NOTICE TO COURT REGARDING PROPOSED ORDER TO SHOW CAUSE WITHOUT EMERGENCY RELIEF. Document No. [13] Proposed Order to Show Cause Without Emergency Relief, was reviewed and approved as to form.
Jul 06, 2026
PROPOSED ORDER TO SHOW CAUSE WITHOUT EMERGENCY RELIEF. Document filed by Citadel Securities LLC. Proposed Order to Show Cause to be reviewed by Clerk's Office staff.
Jul 06, 2026
***NOTICE TO ATTORNEY REGARDING DEFICIENT PROPOSED ORDER TO SHOW CAUSE WITHOUT EMERGENCY RELIEF. Notice to attorney Jonathan K. Youngwood to RE-FILE Document No. 13 Proposed Order to Show Cause Without Emergency Relief. The filing is deficient for the following reason(s): the proposed documents are not filed separately. Re-file the document using the event type Proposed Order to Show Cause Without Emergency Relief found under the event list Proposed Orders - select the correct filer/filers - attach the correct signed (scanned signature image) and dated PDF.
Jul 06, 2026
***NOTICE TO ATTORNEY REGARDING DEFICIENT PROPOSED ORDER TO SHOW CAUSE WITHOUT EMERGENCY RELIEF. Notice to attorney Jonathan K. Youngwood to RE-FILE Document No. [13] Proposed Order to Show Cause Without Emergency Relief. The filing is deficient for the following reason(s): the proposed documents are not filed separately. Re-file the document using the event type Proposed Order to Show Cause Without Emergency Relief found under the event list Proposed Orders - select the correct filer/filers - attach the correct signed (scanned signature image) and dated PDF.
Jul 06, 2026
DECLARATION of Jonathan K. Youngwood in Support re: [20] Proposed Order to Show Cause Without Emergency Relief. Document filed by Citadel Securities LLC.
Jul 02, 2026
LETTER addressed to Judge Arun Subramanian from John N. Orsini dated July 2, 2026 re: Service of Subpoena. Document filed by Susquehanna Investment Group, Susquehanna Securites, LLC.
Jul 02, 2026
NOTICE OF APPEARANCE by Michael Joseph Osnato, Jr on behalf of Citadel Securities LLC.
Jul 02, 2026
NOTICE OF APPEARANCE by Anthony C Piccirillo on behalf of Citadel Securities LLC.
Jul 02, 2026
NOTICE OF APPEARANCE by Jonathan K. Youngwood on behalf of Citadel Securities LLC.
Jul 02, 2026
PROPOSED ORDER TO SHOW CAUSE WITHOUT EMERGENCY RELIEF. Document filed by Citadel Securities LLC. Proposed Order to Show Cause to be reviewed by Clerk's Office staff.
Jul 02, 2026
DECLARATION of Jonathan K. Youngwood in Support re: 13 Proposed Order to Show Cause Without Emergency Relief. Document filed by Citadel Securities LLC.
Jul 02, 2026
RULE 7.1 CORPORATE DISCLOSURE STATEMENT. Identifying Other Affiliate Citadel Securities GP LLC for Citadel Securities LLC. Document filed by Citadel Securities LLC.
Jul 02, 2026
MEMORANDUM OF LAW in Support re: 13 Proposed Order to Show Cause Without Emergency Relief, for Intervention. Document filed by Citadel Securities LLC.
Jul 01, 2026
CASHIERS OFFICE REGISTRY DEPOSIT as per 10 Temporary Restraining Order, dated 6/29/2026, from Judge Arun Subramanian, received $100,000.00 from Susquehanna Securites, LLC Receipt Number NYSCCA26-0453 on 6/30/2026.
Jul 01, 2026
CASHIERS OFFICE REGISTRY DEPOSIT as per [10] Temporary Restraining Order, dated 6/29/2026, from Judge Arun Subramanian, received $100,000.00 from Susquehanna Securites, LLC Receipt Number NYSCCA26-0453 on 6/30/2026.
Jun 30, 2026
CERTIFICATE OF SERVICE. Document filed by Susquehanna Investment Group, Susquehanna Securites, LLC.
Jun 29, 2026
***NOTICE TO COURT REGARDING PROPOSED ORDER TO SHOW CAUSE WITH EMERGENCY RELIEF. Document No. [4] Proposed Order to Show Cause With Emergency Relief was reviewed and approved as to form.
Jun 29, 2026
Case Designated ECF.
Jun 29, 2026
DECLARATION of Brian Sopinsky in Support re: [4] Proposed Order to Show Cause With Emergency Relief. Document filed by Susquehanna Investment Group, Susquehanna Securites, LLC.
Jun 29, 2026
PROPOSED ORDER TO SHOW CAUSE WITH EMERGENCY RELIEF. Document filed by Susquehanna Investment Group, Susquehanna Securites, LLC. Proposed Order to Show Cause to be reviewed by Clerk's Office staff.
Jun 29, 2026
CASE OPENING INITIAL ASSIGNMENT NOTICE: The above-entitled action is assigned to Judge Arun Subramanian. Please download and review the Individual Practices of the assigned District Judge, located at https://nysd.uscourts.gov/judges/district-judges. Attorneys are responsible for providing courtesy copies to judges where their Individual Practices require such. Please download and review the ECF Rules and Instructions, located at https://nysd.uscourts.gov/rules/ecf-related-instructions.
Jun 29, 2026
NOTICE OF APPEARANCE by Carolyn Young on behalf of Susquehanna Investment Group, Susquehanna Securites, LLC.
Jun 29, 2026
COMPLAINT against John Does 1 Through 100. (Filing Fee $ 405.00, Receipt Number ANYSDC-33058393)Document filed by Susquehanna Securites, LLC, Susquehanna Investment Group.
Jun 29, 2026
MEMORANDUM OF LAW in Support re: [4] Proposed Order to Show Cause With Emergency Relief. Document filed by Susquehanna Investment Group, Susquehanna Securites, LLC.
Jun 29, 2026
TEMPORARY RESTRAINING ORDER AND ORDER TO SHOW CAUSE FOR A PRELIMINARY INJUNCTION AND GRANTING PLAINTIFFS' EX PARTE MOTION FOR EXPEDITED DISCOVERY: it is hereby: ORDERED, that defendants John Does 1 through 100 ("Defendants"), who consist of all individuals who purchased short-dated1 put options between May 7, 2026 and May 21, 2026 in Futu Holdings Limited (trading under the ticker FUTU) and UP Fintech Holding Ltd. (trading under the ticker TIGR), through brokerages TradeUP Securities, Inc. ("TradeUP"), Interactive Brokers Group, Inc. ("Interactive Brokers") or Futu Holdings Limited ("Futu") (together, the "Brokers") show cause before a motion term of this Court to be held, at the U.S. Courthouse, 500 Pearl Street, New York, New York, 10007, Courtroom 15A, at 2 p.m. on July 10, 2026, why an order should not be issued pursuant to Rules 64 and 65 of the Federal Rules of Civil Procedure granting a preliminary injunction enjoining Defendants during the pendency of this action from transferring, encumbering, removing, or otherwise conveying proceeds held in accounts with the third-party Brokers, and enjoining Defendants' employees, owners, agents, officers, directors, attorneys, representatives, affiliates, subsidiaries, successors, and assigns, and all those in active concert or participation with them or having knowledge of the causes of action, including the Brokers, from enabling or assisting Defendants in such uses; AND IT IS FURTHER ORDERED that, sufficient reason having been shown therefor, pending the hearing of this Application, pursuant to Rules 64 and 65 of the Federal Rules of Civil Procedure: Defendants are temporarily restrained and enjoined from transferring, encumbering, removing, or otherwise conveying proceeds held in accounts with the Brokers, and this order hereby enjoins Defendants' employees, owners, agents, officers, directors, attorneys, representatives, affiliates, subsidiaries, successors, and assigns, and all those in active concert or participation with them or having knowledge of the causes of action, including the Brokers, from enabling or assisting Defendants in such uses; AND IT IS FURTHER ORDERED that any papers responding to the Application be served and filed on or before July 7, 2026, and that any reply papers in further support of the Application be served and filed on or before July 9, 2026; AND IT IS FURTHER ORDERED that security in the amount of $100,000 be posted by Plaintiffs prior to July 1, 2026; AND IT IS FURTHER ORDERED that, sufficient reason having been shown therefor, Plaintiffs' ex parte Motion for Expedited Discovery is GRANTED, the stay imposed pursuant to the Private Securities Litigation Reform Act of 1994 is lifted, and Plaintiffs may immediately serve third-party subpoenas duces tecum upon the Brokers prior to conducting a Rule 26(f) conference in the above-captioned action; AND IT IS FURTHER ORDERED that, pursuant to Rule 4(f)(3) of the Federal Rules of Civil Procedure, service via e-mail and FedEx of a copy of this order and the papers upon which it is granted made on the Defendants and/or the Brokers or their counsel on or before June 29, 2026, shall be deemed good and sufficient service and notice thereof. (Show Cause Hearing set for 7/10/2026 at 02:00 PM in Courtroom 15A, 500 Pearl Street, New York, NY 10007 before Judge Arun Subramanian.) (Signed by Judge Arun Subramanian on 6/29/2026) (sgz) Transmission to Finance Unit (Cashiers) for processing.
Jun 29, 2026
***NOTICE TO COURT REGARDING PROPOSED ORDER TO SHOW CAUSE WITH EMERGENCY RELIEF. Document No. 4 Proposed Order to Show Cause With Emergency Relief was reviewed and approved as to form.
Jun 29, 2026
RULE 7.1 CORPORATE DISCLOSURE STATEMENT. Identifying Corporate Parent SSUS Holdings, LLC, Corporate Parent Bodel, Inc., Corporate Parent Susquehanna International Group, LLP, Other Affiliate Sealholtz Holdings, LLC, Other Affiliate Mahanoy Holdings, LLC for Susquehanna Securites, LLC; Corporate Parent Bodel, Inc., Corporate Parent Susquehanna International Group, LLP, Other Affiliate Sealholtz Holdings, LLC, Other Affiliate Mahanoy Holdings, LLC for Susquehanna Investment Group. Document filed by Susquehanna Investment Group, Susquehanna Securites, LLC.
Jun 29, 2026
DECLARATION of John N. Orsini in Support re: [4] Proposed Order to Show Cause With Emergency Relief. Document filed by Susquehanna Investment Group, Susquehanna Securites, LLC.
Jun 29, 2026
CASE OPENING INITIAL ASSIGNMENT NOTICE: The above-entitled action is assigned to Judge Arun Subramanian. Please download and review the Individual Practices of the assigned District Judge, located at https://nysd.uscourts.gov/judges/district-judges. Attorneys are responsible for providing courtesy copies to judges where their Individual Practices require such. Please download and review the ECF Rules and Instructions, located at https://nysd.uscourts.gov/rules/ecf-related-instructions.
Jun 29, 2026
CIVIL COVER SHEET filed.
Jun 29, 2026
Magistrate Judge Stewart D. Aaron is designated to handle matters that may be referred in this case. Pursuant to 28 U.S.C. Section 636(c) and Fed. R. Civ. P. 73(b)(1) parties are notified that they may consent to proceed before a United States Magistrate Judge. Parties who wish to consent may access the necessary form at the following link: https://nysd.uscourts.gov/sites/default/files/2018-06/AO-3.pdf.
Jun 29, 2026