greeksoup/ stock research
Stock research / United States / MKTX / 13F holders

Marketaxess Holdings Inc. 13F holders

Of the 44 funds followed here, 9 reported a position in Marketaxess Holdings Inc. in a 13F for the quarter ended 30 June 2026. The largest: FMR LLC, 1.4 million shares worth $159.5 million, 0.0% of its reported book. Sold out: Baillie Gifford, Alyeska.

FundSharesValueOf its bookChange on the quarterStatusQuarter endedFiling
FMR LLC1,404,998$159.5 million0.0%-114,423trimmed30 June 202613F
Millennium Management1,156,290$131.2 million0.0%-49,098trimmed30 June 202613F
Geode Capital Management994,772$112.9 million0.0%+131,785added30 June 202613F
Norges Bank572,422$65.0 million0.0%held30 June 202613F
Citadel Advisors548,489$62.2 million0.0%+425,830added30 June 202613F
Two Sigma Investments543,890$61.7 million0.0%+19,866added30 June 202613F
Renaissance Technologies200,000$22.7 million0.0%+32,900added30 June 202613F
Point72 Asset Management8,100$919,2690.0%-244,725trimmed30 June 202613F
Bridgewater Associates7,024$797,1540.0%+1,416added30 June 202613F
Baillie Gifford0$00.0%-29,032exited30 June 202613F
Alyeska0$00.0%-5,042exited30 June 202613F
Value is what the fund reported.
Read moreChange is shares against the fund's previous 13F; a fund with one filing read shows no change. 13Fs cover long US positions of managers above $100 million and are filed up to 45 days after the quarter.

Schedule 13D and 13G filed on the name, last twelve months

FiledScheduleWhoHoldingOf the classEvent dateRule or purposeFiling
14 August 202613G/ANorth Reef Capital Management LP and 5 others3.4 million9.6%30 June 2026passive, institutional (13d-1(b))EDGAR
13 August 202613G/AAQR Capital Management, LLC and 3 others2.0 million5.6%30 June 2026passive, institutional (13d-1(b))EDGAR
6 August 202613G/APrimecap Management Co/Ca/ and 1 other3.5 million9.9%30 June 2026passive, institutional (13d-1(b))EDGAR
15 May 202613GNorth Reef Capital Management LP and 5 others1.9 million5.3%31 March 2026passive, institutional (13d-1(b))EDGAR
6 May 202613G/AFmr Llc and 3 others1.5 million4.2%31 March 2026passive, institutional (13d-1(b))EDGAR
30 April 202613GVanguard Capital Management and 1 other1.9 million5.3%31 March 2026passive, institutional (13d-1(b))EDGAR
29 April 202613GVanguard Portfolio Management and 1 other2.2 million6.1%31 March 2026passive, institutional (13d-1(b))EDGAR
27 March 202613G/AThe Vanguard Group and 1 other00.0%13 March 2026passive, institutional (13d-1(b))EDGAR
13 February 202613GAQR Capital Management, LLC and 3 others2.6 million6.9%31 December 2025passive, institutional (13d-1(b))EDGAR
11 February 202613G/APrimecap Management Co/Ca/ and 1 other3.2 million8.5%31 December 2025passive, institutional (13d-1(b))EDGAR
6 February 202613G/ABlackRock, Inc. and 1 other4.0 million10.9%31 January 2026passive, institutional (13d-1(b))EDGAR
21 January 202613GBlackRock, Inc. and 1 other3.7 million9.9%31 December 2025passive, institutional (13d-1(b))EDGAR
14 November 202513G/AT. Rowe Price Investment Management, Inc. and 1 other1.4 million3.7%30 September 2025passive, institutional (13d-1(b))EDGAR
13 November 202513GPrimecap Management Co/Ca/ and 1 other2.2 million6.0%30 September 2025passive, institutional (13d-1(b))EDGAR
31 October 202513G/AThe Vanguard Group and 1 other3.9 million10.3%30 September 2025passive, institutional (13d-1(b))EDGAR
17 October 202513G/ABlackRock, Inc. and 1 other1.6 million4.2%30 September 2025passive, institutional (13d-1(b))EDGAR
A Schedule 13D is filed by anyone who crosses 5% of a class with intent to influence; a 13G by a passive holder.
Read moreAmendments (/A) report a change, including an exit to zero. Holding and percentage are as the filer stated them on the cover page; the purpose is the filer's own words, cut short.

Fails to deliver

Settlement dateShares failedPriceFile
4 September 202641$163.34SEC
19 August 2026200$162.57SEC
4 August 202692$162.28SEC
Shares that failed to deliver at settlement, per day, from the SEC's half-month files, which arrive about two weeks after the period.
Read moreLargest in the window: 200 on 19 August 2026. A fail is an operational fact about settlement, not a position.

Source

Each fund's 13F-HR on EDGAR, linked per row; positions matched to MKTX by CUSIP from the SEC's own fails-to-deliver files; Schedule 13D and 13G from the company's own filing index, each read to confirm the company is the issuer named.

The same record on your computer

GreekSoup is also a free program for your own computer. It reads these same filings for the names you follow, refreshed as they land, with no account. One pasted line installs it.

Install