ALPHA & OMEGA SEMICONDUCTOR

Ticker: AOSL CUSIP: G6331P104 Class: Common Stock

Boston Partners's Holding History (CIK: 0001386060)

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

Q4 2025

Shares 689,143 Value ($000) $13,655 Avg Close $23.61 Range $17.02 - $33.01

Q3 2025

Shares 786,630 Value ($000) $21,994 Avg Close $27.76 Range $20.67 - $31.56

Q2 2025

Shares 1,109,377 Value ($000) $28,467 Avg Close $21.74 Range $15.90 - $26.72

Q1 2025

Shares 595,137 Value ($000) $14,782 Avg Close $33.47 Range $23.65 - $46.65

Q4 2024

Shares 20,965 Value ($000) $165 Avg Close $37.27 Range $25.97 - $53.29

Q3 2024

Shares 22,185 Value ($000) $156 Avg Close $37.97 Range $31.73 - $47.45

Q4 2023

Shares 58,032 Value ($000) $196 Avg Close $24.69 Range $20.03 - $30.49

Q3 2023

Shares 37,801 Value ($000) $125 Avg Close $31.10 Range $28.05 - $35.40

Q2 2023

Shares 35,581 Value ($000) $14 Avg Close $26.90 Range $20.64 - $33.02

Q1 2023

Shares 35,581 Value ($000) $222 Avg Close $29.03 Range $24.05 - $38.87

Q4 2022

Shares 35,581 Value ($000) $165 Avg Close $32.35 Range $27.38 - $38.82

Q3 2022

Shares 35,188 Value ($000) $95 Avg Close $37.00 Range $28.74 - $45.89

Q1 2021

Shares 31,100 Value ($000) $1,017 Avg Close $32.84 Range $23.77 - $43.00

Q4 2020

Shares 78,003 Value ($000) $1,844 Avg Close $20.41 Range $12.74 - $29.20

Q3 2020

Shares 80,312 Value ($000) $1,029 Avg Close $12.06 Range $10.02 - $15.08

Q2 2020

Shares 134,002 Value ($000) $1,458 Avg Close $10.24 Range $6.00 - $12.66

Q1 2020

Shares 132,200 Value ($000) $848 Avg Close $10.88 Range $5.82 - $14.50

Q4 2019

Shares 151,945 Value ($000) $2,070 Avg Close $12.64 Range $11.09 - $14.16

Q3 2019

Shares 66,782 Value ($000) $820 Avg Close $11.04 Range $8.50 - $13.67

Q2 2015

Shares 380,000 Value ($000) $3,321 Avg Close $8.58 Range $7.36 - $9.18

Q1 2015

Shares 422,616 Value ($000) $3,766 Avg Close $8.91 Range $8.27 - $9.63

Q4 2014

Shares 455,574 Value ($000) $4,032 Avg Close $8.94 Range $8.07 - $9.94

Q3 2014

Shares 455,574 Value ($000) $4,282 Avg Close $9.47 Range $8.63 - $11.18

Q2 2014

Shares 455,574 Value ($000) $4,223 Avg Close $7.92 Range $6.93 - $9.36

Q1 2014

Shares 451,700 Value ($000) $3,325 Avg Close $7.40 Range $6.80 - $8.10

Q4 2013

Shares 462,608 Value ($000) $3,567 Avg Close $7.68 Range $7.10 - $8.50

Q3 2013

Shares 462,608 Value ($000) $3,891 Avg Close $7.84 Range $7.02 - $8.96

Q2 2013

Shares 462,608 Value ($000) $3,534 Avg Close $8.05 Range $6.64 - $9.20

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	689,143	$13,655	$23.61	$17.02 - $33.01
Q3 2025	786,630	$21,994	$27.76	$20.67 - $31.56
Q2 2025	1,109,377	$28,467	$21.74	$15.90 - $26.72
Q1 2025	595,137	$14,782	$33.47	$23.65 - $46.65
Q4 2024	20,965	$165	$37.27	$25.97 - $53.29
Q3 2024	22,185	$156	$37.97	$31.73 - $47.45
Q4 2023	58,032	$196	$24.69	$20.03 - $30.49
Q3 2023	37,801	$125	$31.10	$28.05 - $35.40
Q2 2023	35,581	$14	$26.90	$20.64 - $33.02
Q1 2023	35,581	$222	$29.03	$24.05 - $38.87
Q4 2022	35,581	$165	$32.35	$27.38 - $38.82
Q3 2022	35,188	$95	$37.00	$28.74 - $45.89
Q1 2021	31,100	$1,017	$32.84	$23.77 - $43.00
Q4 2020	78,003	$1,844	$20.41	$12.74 - $29.20
Q3 2020	80,312	$1,029	$12.06	$10.02 - $15.08
Q2 2020	134,002	$1,458	$10.24	$6.00 - $12.66
Q1 2020	132,200	$848	$10.88	$5.82 - $14.50
Q4 2019	151,945	$2,070	$12.64	$11.09 - $14.16
Q3 2019	66,782	$820	$11.04	$8.50 - $13.67
Q2 2015	380,000	$3,321	$8.58	$7.36 - $9.18
Q1 2015	422,616	$3,766	$8.91	$8.27 - $9.63
Q4 2014	455,574	$4,032	$8.94	$8.07 - $9.94
Q3 2014	455,574	$4,282	$9.47	$8.63 - $11.18
Q2 2014	455,574	$4,223	$7.92	$6.93 - $9.36
Q1 2014	451,700	$3,325	$7.40	$6.80 - $8.10
Q4 2013	462,608	$3,567	$7.68	$7.10 - $8.50
Q3 2013	462,608	$3,891	$7.84	$7.02 - $8.96
Q2 2013	462,608	$3,534	$8.05	$6.64 - $9.20