BALLARD PWR SYS INC NEW

Ticker: BLDP CUSIP: 058586108 Class: COM

Twin Tree Management, LP's Holding History (CIK: 0001535588)

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

Q3 2021

Shares 189,220 Value ($000) $2,659 Avg Close $15.84 Range $13.73 - $18.86

Q2 2021

Shares 443,741 Value ($000) $8,041 Avg Close $18.59 Range $12.80 - $25.59

Q1 2021

Shares 244,419 Value ($000) $5,949 Avg Close $29.89 Range $20.25 - $42.28

Q4 2020

Shares 103,364 Value ($000) $2,419 Avg Close $18.42 Range $14.41 - $24.60

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2021	189,220	$2,659	$15.84	$13.73 - $18.86
Q2 2021	443,741	$8,041	$18.59	$12.80 - $25.59
Q1 2021	244,419	$5,949	$29.89	$20.25 - $42.28
Q4 2020	103,364	$2,419	$18.42	$14.41 - $24.60