BLACKROCK INC

Ticker: BLK CUSIP: 09290D101 Class: Common Stock

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

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

Q4 2025

Shares 260 Value ($000) $278 Avg Close $1089.41 Range $985.78 - $1214.03

Q3 2025

Shares 133 Value ($000) $155 Avg Close $1108.77 Range $1023.93 - $1177.77

Q4 2024

Shares 10,979 Value ($000) $11,255 Avg Close $991.05 Range $896.06 - $1060.71

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	260	$278	$1089.41	$985.78 - $1214.03
Q3 2025	133	$155	$1108.77	$1023.93 - $1177.77
Q4 2024	10,979	$11,255	$991.05	$896.06 - $1060.71