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Equibles

CITADEL ADVISORS LLC

Position in MKTX — Marketaxess Holdings Inc

CIK 1423053 MIAMI, FL
Back to MKTX Full portfolio

Position in MKTX

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$13,554,591
-$99,764,359 QoQ
Shares Held
82,159
-86.9% QoQ
Ownership
0.231%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in MKTX Over Time

Shares Held

Position Value (USD)

Derivatives in MKTX

reported options exposure · as of Mar 31, 2026
CallValue
$3,217,110
CallShares
19,500
PutValue
$3,464,580
PutShares
21,000

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 Mar 31, 2026

CITADEL ADVISORS LLC holds $2,407,170,099 across 61 Capital Markets names. MKTX ranks #30 (0.6% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 MS
Morgan Stanley
 2,865,020 $471,496,340
2 LPLA
LPL Financial Holdings Inc.
 923,471 $277,807,780
3 BMNR
Bitmine Immersion Technologies, Inc.
 12,331,509 $243,917,248
4 SCHW
Schwab Charles Corp
 2,547,748 $239,437,356
5 VIRT
Virtu Financial, Inc.
 2,228,582 $98,013,035
6 CRCL
Circle Internet Group, Inc.
 867,811 $82,797,847
7 TW
Tradeweb Markets Inc.
 699,945 $82,355,528
8 HOOD
Robinhood Markets, Inc.
 1,095,310 $75,904,982

All Filings in MKTX

Export CSV
50 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $3,217,110 19,500
2026-03-31 $3,464,580 21,000
2026-03-31 $13,554,591 82,159
2025-12-31 $6,724,375 37,100
2025-12-31 $6,017,500 33,200
2025-12-31 $113,318,950 625,208
2025-09-30 $12,110,375 69,500
2025-09-30 $54,032,485 310,086
2025-09-30 $4,722,175 27,100
2025-06-30 $1,139,034 5,100
2025-06-30 $78,429,413 351,166
2025-06-30 $13,199,394 59,100
2025-03-31 $4,586,620 21,200
2025-03-31 $102,624,540 474,345
2025-03-31 $4,889,510 22,600
2024-12-31 $3,820,076 16,900
2024-12-31 $8,476,500 37,500
2024-12-31 $22,736,910 100,588
2024-09-30 $3,919,860 15,300
2024-09-30 $6,405,000 25,000
2024-09-30 $56,139,825 219,125
2024-06-30 $6,336,748 31,600
2024-06-30 $38,271,752 190,853
2024-06-30 $3,028,003 15,100
2024-03-31 $7,016,000 32,000
2024-03-31 $65,656,166 299,458
2024-03-31 $6,840,600 31,200
2023-12-31 $9,371,200 32,000
2023-12-31 $7,350,535 25,100
2023-12-31 $101,268,408 345,803
2023-09-30 $22,218,773 104,001
2023-09-30 $13,672,960 64,000
2023-09-30 $7,990,136 37,400
2023-06-30 $3,921,300 15,000
2023-06-30 $38,340,118 146,661
2023-06-30 $2,718,768 10,400
2023-03-31 $25,472,979 65,100
2023-03-31 $14,154,132 36,173
2023-03-31 $8,725,767 22,300
2022-12-31 $5,689,356 20,400
2022-12-31 $6,777,027 24,300
2022-12-31 $14,991,452 53,754
2022-09-30 $12,481,689 56,100
2022-09-30 $6,941,688 31,200
2022-09-30 $69,167,913 310,881
2022-06-30 $7,910,709 30,900
2022-06-30 $5,478,614 21,400
2022-06-30 $124,117,487 484,815
2022-03-31 $11,192,580 32,900
2022-03-31 $97,085,595 285,378

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