MARKETAXESS HLDGS INC

Ticker: MKTX CUSIP: 57060D108 Class: COM

Quantum Portfolio Management LLC's Holding History (CIK: 0002003672)

Note: Option positions (PUT/CALL) are excluded.

Q1 2025

Shares 1,831 Value ($000) $396 Avg Close $206.23 Range $183.82 - $224.26

Q4 2024

Shares 1,714 Value ($000) $387 Avg Close $257.54 Range $220.08 - $289.94

Q3 2024

Shares 2,018 Value ($000) $517 Avg Close $228.65 Range $187.70 - $258.10

Q2 2024

Shares 2,230 Value ($000) $447 Avg Close $200.47 Range $187.45 - $222.81

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2025	1,831	$396	$206.23	$183.82 - $224.26
Q4 2024	1,714	$387	$257.54	$220.08 - $289.94
Q3 2024	2,018	$517	$228.65	$187.70 - $258.10
Q2 2024	2,230	$447	$200.47	$187.45 - $222.81