DATADOG INC

Ticker: DDOG CUSIP: 23804L103 Class: EQTY

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q3 2025

Shares 8,859 Value ($000) $1,262 Avg Close $137.70 Range $123.42 - $157.38

Q2 2025

Shares 21,263 Value ($000) $2,856 Avg Close $110.71 Range $81.63 - $135.41

Q1 2025

Shares 30,358 Value ($000) $3,012 Avg Close $126.18 Range $96.63 - $153.42

Q4 2024

Shares 17,416 Value ($000) $2,489 Avg Close $137.35 Range $113.08 - $170.08

Q1 2021

Shares 17,648 Value ($000) $1,471 Avg Close $96.41 Range $74.53 - $119.43

Q4 2020

Shares 9,249 Value ($000) $910 Avg Close $99.80 Range $79.76 - $118.13

Q4 2019

Shares 11,417 Value ($000) $431 Avg Close $35.97 Range $27.55 - $44.09

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	8,859	$1,262	$137.70	$123.42 - $157.38
Q2 2025	21,263	$2,856	$110.71	$81.63 - $135.41
Q1 2025	30,358	$3,012	$126.18	$96.63 - $153.42
Q4 2024	17,416	$2,489	$137.35	$113.08 - $170.08
Q1 2021	17,648	$1,471	$96.41	$74.53 - $119.43
Q4 2020	9,249	$910	$99.80	$79.76 - $118.13
Q4 2019	11,417	$431	$35.97	$27.55 - $44.09