VICOR CORP

Ticker: VICR CUSIP: 925815102 Class: Common Stock

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q4 2025

Shares 4,379 Value ($000) $480 Avg Close $85.01 Range $48.53 - $116.33

Q3 2025

Shares 5,408 Value ($000) $269 Avg Close $48.71 Range $41.76 - $63.00

Q2 2025

Shares 6,451 Value ($000) $293 Avg Close $44.69 Range $38.92 - $53.23

Q1 2025

Shares 5,163 Value ($000) $242 Avg Close $53.00 Range $45.45 - $65.70

Q4 2024

Shares 2,360 Value ($000) $114 Avg Close $49.95 Range $39.99 - $61.05

Q2 2024

Shares 639 Value ($000) $21 Avg Close $34.51 Range $30.90 - $38.90

Q4 2020

Shares 4,789 Value ($000) $442 Avg Close $83.99 Range $73.71 - $96.64

Q3 2020

Shares 16,534 Value ($000) $1,285 Avg Close $79.56 Range $70.90 - $90.88

Q2 2020

Shares 6,674 Value ($000) $480 Avg Close $56.15 Range $37.28 - $73.76

Q1 2020

Shares 55,330 Value ($000) $2,464 Avg Close $47.42 Range $30.42 - $57.86

Q4 2019

Shares 47,900 Value ($000) $2,238 Avg Close $38.08 Range $28.69 - $46.89

Q3 2019

Shares 62,244 Value ($000) $1,837 Avg Close $30.85 Range $26.50 - $34.58

Q2 2019

Shares 6,796 Value ($000) $211 Avg Close $32.14 Range $27.82 - $38.98

Q1 2019

Shares 18,711 Value ($000) $580 Avg Close $36.89 Range $28.76 - $49.27

Q4 2018

Shares 23,313 Value ($000) $881 Avg Close $36.53 Range $31.03 - $47.50

Q3 2018

Shares 17,780 Value ($000) $818 Avg Close $54.98 Range $43.27 - $64.50

Q1 2018

Shares 10,071 Value ($000) $288 Avg Close $21.48 Range $16.30 - $29.00

Q4 2017

Shares 1,500 Value ($000) $31 Avg Close $22.39 Range $20.00 - $25.65

Q4 2016

Shares 1,501 Value ($000) $23 Avg Close $13.82 Range $11.35 - $16.15

Q3 2016

Shares 401 Value ($000) $5 Avg Close $10.82 Range $9.61 - $12.19

Q3 2015

Shares 5,120 Value ($000) $52 Avg Close $10.38 Range $8.88 - $12.42

Q2 2015

Shares 10,920 Value ($000) $133 Avg Close $14.67 Range $11.07 - $17.72

Q1 2015

Shares 5,620 Value ($000) $85 Avg Close $12.92 Range $10.70 - $15.96

Q4 2014

Shares 2,532 Value ($000) $31 Avg Close $11.85 Range $8.43 - $13.96

Q3 2014

Shares 532 Value ($000) $5 Avg Close $8.32 Range $7.20 - $10.20

Q2 2014

Shares 532 Value ($000) $4 Avg Close $8.11 Range $6.76 - $11.25

Q1 2014

Shares 1,900 Value ($000) $19 Avg Close $11.21 Range $9.63 - $13.81

Q3 2013

Shares 153 Value ($000) $1 Avg Close $7.98 Range $6.45 - $9.04

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	4,379	$480	$85.01	$48.53 - $116.33
Q3 2025	5,408	$269	$48.71	$41.76 - $63.00
Q2 2025	6,451	$293	$44.69	$38.92 - $53.23
Q1 2025	5,163	$242	$53.00	$45.45 - $65.70
Q4 2024	2,360	$114	$49.95	$39.99 - $61.05
Q2 2024	639	$21	$34.51	$30.90 - $38.90
Q4 2020	4,789	$442	$83.99	$73.71 - $96.64
Q3 2020	16,534	$1,285	$79.56	$70.90 - $90.88
Q2 2020	6,674	$480	$56.15	$37.28 - $73.76
Q1 2020	55,330	$2,464	$47.42	$30.42 - $57.86
Q4 2019	47,900	$2,238	$38.08	$28.69 - $46.89
Q3 2019	62,244	$1,837	$30.85	$26.50 - $34.58
Q2 2019	6,796	$211	$32.14	$27.82 - $38.98
Q1 2019	18,711	$580	$36.89	$28.76 - $49.27
Q4 2018	23,313	$881	$36.53	$31.03 - $47.50
Q3 2018	17,780	$818	$54.98	$43.27 - $64.50
Q1 2018	10,071	$288	$21.48	$16.30 - $29.00
Q4 2017	1,500	$31	$22.39	$20.00 - $25.65
Q4 2016	1,501	$23	$13.82	$11.35 - $16.15
Q3 2016	401	$5	$10.82	$9.61 - $12.19
Q3 2015	5,120	$52	$10.38	$8.88 - $12.42
Q2 2015	10,920	$133	$14.67	$11.07 - $17.72
Q1 2015	5,620	$85	$12.92	$10.70 - $15.96
Q4 2014	2,532	$31	$11.85	$8.43 - $13.96
Q3 2014	532	$5	$8.32	$7.20 - $10.20
Q2 2014	532	$4	$8.11	$6.76 - $11.25
Q1 2014	1,900	$19	$11.21	$9.63 - $13.81
Q3 2013	153	$1	$7.98	$6.45 - $9.04