ALPHA & OMEGA SEMICONDUCTOR

Ticker: AOSL CUSIP: G6331P104 Class: Common Stock

DUPONT CAPITAL MANAGEMENT CORP's Holding History (CIK: 0001128251)

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

Q4 2017

Shares 61,578 Value ($000) $1,007 Avg Close $17.50 Range $16.30 - $18.72

Q3 2017

Shares 61,578 Value ($000) $1,015 Avg Close $16.38 Range $14.81 - $18.71

Q2 2017

Shares 14,444 Value ($000) $241 Avg Close $17.75 Range $15.76 - $20.48

Q1 2017

Shares 14,444 Value ($000) $248 Avg Close $19.83 Range $16.35 - $23.00

Q4 2016

Shares 14,444 Value ($000) $307 Avg Close $21.60 Range $18.14 - $23.93

Q3 2016

Shares 35,783 Value ($000) $777 Avg Close $17.96 Range $13.08 - $23.07

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2017	61,578	$1,007	$17.50	$16.30 - $18.72
Q3 2017	61,578	$1,015	$16.38	$14.81 - $18.71
Q2 2017	14,444	$241	$17.75	$15.76 - $20.48
Q1 2017	14,444	$248	$19.83	$16.35 - $23.00
Q4 2016	14,444	$307	$21.60	$18.14 - $23.93
Q3 2016	35,783	$777	$17.96	$13.08 - $23.07