ON SEMICONDUCTOR CORP

Ticker: ON CUSIP: 682189105 Class: EQTY

WESTFIELD CAPITAL MANAGEMENT CO LP's Holding History (CIK: 0001177719)

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

Q2 2022
Shares 607,938 Value ($000) $30,585 Avg Close $55.72 Range $49.35 - $67.19
Q1 2022
Shares 818,604 Value ($000) $51,253 Avg Close $60.97 Range $51.02 - $71.26
Q4 2021
Shares 702,153 Value ($000) $47,690 Avg Close $56.65 Range $41.88 - $70.27
Q3 2021
Shares 795,812 Value ($000) $36,424 Avg Close $42.74 Range $34.01 - $49.78
Q4 2020
Shares 1,513,001 Value ($000) $49,521 Avg Close $27.90 Range $21.91 - $32.93
Q4 2019
Shares 1,794,694 Value ($000) $43,755 Avg Close $21.12 Range $17.04 - $24.70
Q3 2019
Shares 3,767,480 Value ($000) $72,373 Avg Close $19.23 Range $16.65 - $22.36
Q2 2019
Shares 4,101,364 Value ($000) $82,889 Avg Close $20.66 Range $17.31 - $23.54
Q1 2019
Shares 1,860,995 Value ($000) $38,281 Avg Close $20.63 Range $15.57 - $23.35
Q4 2018
Shares 2,398,940 Value ($000) $39,606 Avg Close $17.29 Range $14.55 - $20.06
Q3 2018
Shares 2,445,278 Value ($000) $45,066 Avg Close $21.37 Range $18.06 - $24.31
Q2 2018
Shares 1,432,660 Value ($000) $31,855 Avg Close $24.17 Range $21.45 - $26.38
Q4 2017
Shares 1,511,735 Value ($000) $31,656 Avg Close $20.40 Range $18.52 - $22.15
Q3 2017
Shares 2,042,769 Value ($000) $37,730 Avg Close $16.09 Range $13.65 - $18.49
Q2 2017
Shares 2,068,434 Value ($000) $29,041 Avg Close $15.03 Range $13.77 - $16.93
Q1 2017
Shares 4,148,230 Value ($000) $64,256 Avg Close $14.50 Range $12.37 - $16.06
Q4 2016
Shares 6,377,822 Value ($000) $81,381 Avg Close $11.94 Range $10.74 - $13.32
Q3 2016
Shares 7,988,965 Value ($000) $98,424 Avg Close $10.35 Range $8.11 - $12.55
Q2 2016
Shares 7,253,093 Value ($000) $63,972 Avg Close $9.51 Range $8.21 - $10.15
Q1 2016
Shares 4,181,285 Value ($000) $40,099 Avg Close $8.56 Range $6.97 - $9.92
Q4 2015
Shares 4,768,458 Value ($000) $46,731 Avg Close $10.52 Range $9.06 - $11.62
Q3 2015
Shares 7,668,791 Value ($000) $72,087 Avg Close $10.16 Range $8.40 - $11.86
Q2 2015
Shares 7,127,315 Value ($000) $83,318 Avg Close $12.27 Range $11.08 - $13.50
Q1 2015
Shares 6,928,718 Value ($000) $83,907 Avg Close $11.46 Range $9.65 - $13.31
Q4 2014
Shares 6,950,687 Value ($000) $70,410 Avg Close $8.78 Range $6.76 - $10.44
Q3 2014
Shares 3,414,730 Value ($000) $30,528 Avg Close $9.24 Range $8.32 - $9.94