TWO SIGMA SECURITIES, LLC
Broker-DealerPosition in MKTX — Marketaxess Holdings Inc
CIK 1450144
NEW YORK, NY
Position in MKTX
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$372,854
-$615,502 QoQ
Shares Held
2,260
-58.6% QoQ
Ownership
0.006%
of shares outstanding
% of Portfolio
0.07%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
16 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 Jun 30, 2024CallValue
$320,848
CallShares
1,600
PutValue
$360,954
PutShares
1,800
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, 2026TWO SIGMA SECURITIES, LLC holds $8,081,768 across 21 Capital Markets names. MKTX ranks #7 (4.6% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | IBKR |
Interactive Brokers Group, Inc.
|
20,410 | $1,368,898 | |
| 2 | LPLA |
LPL Financial Holdings Inc.
|
4,259 | $1,281,234 | |
| 3 | TW |
Tradeweb Markets Inc.
|
10,724 | $1,261,785 | |
| 4 | MS |
Morgan Stanley
|
5,098 | $838,977 | |
| 5 | HOOD |
Robinhood Markets, Inc.
|
6,624 | $459,043 | |
| 6 | SCHW |
Schwab Charles Corp
|
4,051 | $380,712 | |
| 7 | MKTX |
Marketaxess Holdings Inc
This page
|
2,260 | $372,854 | |
| 8 | RIOT |
Riot Platforms, Inc.
|
29,982 | $370,577 |
All Filings in MKTX
Export CSV
29 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $372,854 | 2,260 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $988,356 | 5,453 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $256,321 | 1,471 | Shares | Sole | 2025-11-14 | |
| 2025-03-31 | $1,169,588 | 5,406 | Shares | Sole | 2025-05-15 | |
| 2024-09-30 | $614,367 | 2,398 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $523,984 | 2,613 | Shares | Sole | 2024-08-14 | |
| 2024-06-30 | $360,954 | 1,800 | Put | Sole | 2024-08-14 | |
| 2024-06-30 | $320,848 | 1,600 | Call | Sole | 2024-08-14 | |
| 2024-03-31 | $263,100 | 1,200 | Put | Sole | 2024-05-15 | |
| 2023-09-30 | $1,965,488 | 9,200 | Call | Sole | 2023-11-14 | |
| 2023-09-30 | $507,395 | 2,375 | Shares | Sole | 2023-11-14 | |
| 2023-09-30 | $811,832 | 3,800 | Put | Sole | 2023-11-14 | |
| 2023-03-31 | $1,486,902 | 3,800 | Call | Sole | 2023-05-15 | |
| 2023-03-31 | $743,451 | 1,900 | Put | Sole | 2023-05-15 | |
| 2023-03-31 | $210,905 | 539 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $474,113 | 1,700 | Call | Sole | 2023-02-14 | |
| 2022-12-31 | $223,112 | 800 | Put | Sole | 2023-02-14 | |
| 2022-09-30 | $578,474 | 2,600 | Put | Sole | 2022-11-14 | |
| 2022-09-30 | $953,592 | 4,286 | Shares | Sole | 2022-11-14 | |
| 2022-09-30 | $756,466 | 3,400 | Call | Sole | 2022-11-14 | |
| 2022-06-30 | $440,337 | 1,720 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $340,200 | 1,000 | Call | Sole | 2022-05-16 | |
| 2022-03-31 | $350,065 | 1,029 | Shares | Sole | 2022-05-16 | |
| 2022-03-31 | $680,400 | 2,000 | Put | Sole | 2022-05-16 | |
| 2020-09-30 | $529,749 | 1,100 | Call | Sole | 2020-11-16 | |
| 2020-09-30 | $288,954 | 600 | Put | Sole | 2020-11-16 | |
| 2020-06-30 | $450,828 | 900 | Put | Sole | 2020-09-10 | |
| 2020-06-30 | $1,051,932 | 2,100 | Call | Sole | 2020-09-10 | |
| 2020-03-31 | $498,855 | 1,500 | Call | Sole | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||