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Twin Tree Management, LP

Position in MKTX — Marketaxess Holdings Inc

CIK 1535588 DALLAS, TX

Position in MKTX

as of Jun 30, 2026 · filed Aug 12, 2026
Position Value
$340
-$486,186 QoQ
Shares Held
3
-99.9% QoQ
Ownership
0.000%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#380
of 390 holders
Holding Since
Mar 2020
17 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
$56,745
CallShares
500
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

Twin Tree Management, LP holds $5,814,420 across 8 Capital Markets names. MKTX ranks #8 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open
8 MKTX
Marketaxess Holdings Inc
This page
3 $340

All Filings in MKTX

Export CSV
22 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $340 3
2026-06-30 $56,745 500
2026-03-31 $98,988 600
2026-03-31 $486,526 2,949
2025-12-31 $222,393 1,227
2025-09-30 $4,303,975 24,700
2025-06-30 $580,460 2,599
2025-06-30 $13,824,746 61,900
2025-03-31 $1,715,871 7,931
2024-09-30 $107,347 419
2024-09-30 $384,300 1,500
2023-12-31 $283,478 968
2023-06-30 $656,425 2,511
2023-03-31 $618,629 1,581
2021-12-31 $3,824,811 9,300
2021-09-30 $14,976,564 35,600
2021-06-30 $11,311,596 24,400
2021-03-31 $746,880 1,500
2020-09-30 $62,606 130
2020-06-30 $191,351 382
2020-03-31 $2,130,110 6,405
2020-03-31 $3,092,901 9,300