MKTX SCHEDULE 13G/A: SEC filing

A Schedule 13G/A amendment was

Filed with the SEC on Aug 13, 2026 · accession 0001167557-26-000191

MKTX filed a SCHEDULE 13G/A (schedule 13g/a) with the SEC on Aug 13, 2026. A Schedule 13G/A amendment was filed regarding beneficial ownership of MarketAxess Holdings Inc (MKTX) common stock. The stock moved +0.0% by the first close after the filing.

Summary of the filing

A Schedule 13G/A amendment was filed regarding beneficial ownership of MarketAxess Holdings Inc (MKTX) common stock. The filing indicates a change in a holder's previously reported ownership position.

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Key details

IssuerMarketAxess Holdings Inc

How MKTX stock reacted

Close before

$162.60

Aug 12, 2026

First close after

+0.00%

$162.60

5 trading days

-0.53%

$161.74

Since filing

+1.84%

$165.59

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Frequently asked questions

What did MKTX file with the SEC on Aug 13, 2026?

MKTX filed a SCHEDULE 13G/A (SEC filing). A Schedule 13G/A amendment was filed regarding beneficial ownership of MarketAxess Holdings Inc (MKTX) common stock. The filing indicates a change in a holder's previously reported ownership position.

How do I read a SCHEDULE 13G/A?

A report the company filed with the SEC (the US market regulator). Start with the summary, then the key amounts and names. Compare it with the company’s earlier filings.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A SCHEDULE 13G/A (schedule 13g/a): A report the company filed with the SEC (the US market regulator).

How did MKTX stock react to this filing?

MKTX closed at $162.60 before the filing and $162.60 on Aug 13, 2026 (+0.00%). Five trading days later: $161.74 (-0.53%).

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