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MILLENNIUM MANAGEMENT LLC

Position in MKTX — Marketaxess Holdings Inc

CIK 1273087 NEW YORK, NY

Position in MKTX

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$12,437,369
-$166,926,907 QoQ
Shares Held
109,590
-89.9% QoQ
Ownership
0.311%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#52
of 393 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in MKTX Over Time

Shares Held

Position Value (USD)

Derivatives in MKTX

reported options exposure · as of Jun 30, 2026
CallValue
$118,789,983
CallShares
1,046,700
PutValue
$0
PutShares
0

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Capital Markets

Financial Services · as of Jun 30, 2026

MILLENNIUM MANAGEMENT LLC holds $1,519,054,005 across 49 Capital Markets names. MKTX ranks #23 (0.8% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in MKTX

Export CSV
32 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $118,789,983 1,046,700
2026-06-30 $12,437,369 109,590
2026-03-31 $179,364,276 1,087,188
2026-03-31 $19,500,636 118,200
2025-12-31 $9,280,000 51,200
2025-12-31 $54,676,781 301,665
2025-09-30 $125,808,500 722,000
2025-09-30 $105,866,633 607,556
2025-06-30 $96,523,527 432,182
2025-03-31 $133,903,774 618,922
2024-12-31 $32,582,761 144,146
2024-09-30 $49,005,167 191,277
2024-06-30 $68,032,008 339,261
2024-03-31 $2,488,049 11,348
2023-12-31 $5,911,762 20,187
2023-09-30 $107,727,115 504,246
2023-06-30 $73,695,605 281,905
2023-03-31 $43,551,359 111,302
2022-12-31 $6,978,106 25,021
2022-09-30 $58,044,081 260,884
2022-09-30 $1,112,450 5,000
2022-06-30 $51,753,445 202,154
2022-03-31 $33,980,196 99,883
2021-12-31 $25,819,941 62,781
2021-09-30 $14,549,984 34,586
2021-06-30 $39,556,280 85,326
2021-06-30 $695,385 1,500
2021-03-31 $32,746,704 65,767
2020-12-31 $38,056,352 66,700
2020-09-30 $18,482,461 38,378
2020-06-30 $31,121,157 62,128
2020-03-31 $21,163,091 63,635