QUANTUM SI INC

Ticker: QSI CUSIP: 74765K105 Class: Common Stock

TEACHER RETIREMENT SYSTEM OF TEXAS's Holding History (CIK: 0000796848)

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

Q3 2022

Shares 11,801 Value ($000) $32 Avg Close $3.20 Range $2.31 - $4.43

Q2 2022

Shares 12,527 Value ($000) $29 Avg Close $3.83 Range $2.22 - $4.97

Q1 2022

Shares 16,941 Value ($000) $79 Avg Close $4.87 Range $3.72 - $8.30

Q4 2021

Shares 15,537 Value ($000) $122 Avg Close $7.53 Range $5.33 - $9.10

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2022	11,801	$32	$3.20	$2.31 - $4.43
Q2 2022	12,527	$29	$3.83	$2.22 - $4.97
Q1 2022	16,941	$79	$4.87	$3.72 - $8.30
Q4 2021	15,537	$122	$7.53	$5.33 - $9.10