---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-407834"
form_type: "8-K"
ticker: "MKTX"
cik: "0001278021"
company_name: "MARKETAXESS HOLDINGS INC"
filed_at: "2026-09-29T21:24:53+00:00"
generated_at: "2026-10-12T13:54:15.919650+00:00"
event_type: "regulatory"
sentiment: "neutral"
materiality_score: 0.35
calibrated_materiality_score: 0.35
confidence: "high"
source: SEC EDGAR
---

# MarketAxess, ICE refile HSR notifications; merger waiting period now runs to Oct 29, 2026

## Summary
- MarketAxess and ICE voluntarily withdrew their HSR premerger notification and report forms on Sept 25, 2026, then refiled on Sept 29, 2026 to give the DOJ additional review time.
- The HSR waiting period now expires at 11:59 p.m. ET on Oct 29, 2026, unless earlier terminated or extended, including by a request for additional information.
- MarketAxess still expects the merger with ICE to close in the first half of 2027, subject to HSR clearance, stockholder approval and other closing conditions.
- A special meeting of MarketAxess stockholders is scheduled for Oct 29, 2026 to vote on adopting the merger agreement.

## SEC filing metadata
- accession: 0001193125-26-407834
- form_type: 8-K
- ticker: MKTX
- cik: 0001278021
- company_name: MARKETAXESS HOLDINGS INC
- filed_at: 2026-09-29T21:24:53+00:00
- event_type: regulatory
- sentiment: neutral
- materiality_score: 0.35
- calibrated_materiality_score: 0.35
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1278021/000119312526407834/0001193125-26-407834-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1278021/000119312526407834/d142535d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-407834
- JSON: https://secwatch.observer/filing/0001193125-26-407834.json
- Plain text: https://secwatch.observer/filing/0001193125-26-407834.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.