DATA I O CORP

Ticker: DAIO CUSIP: 237690102 Class: Stock

VANGUARD GROUP INC's Holding History (CIK: 0000102909)

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

Q4 2025

Shares 350,374 Value ($000) $1,111 Avg Close $3.00 Range $2.49 - $3.42

Q3 2025

Shares 358,458 Value ($000) $1,197 Avg Close $3.24 Range $2.63 - $3.57

Q2 2025

Shares 358,458 Value ($000) $1,100 Avg Close $2.52 Range $1.88 - $3.12

Q1 2025

Shares 358,458 Value ($000) $878 Avg Close $2.79 Range $2.31 - $3.14

Q4 2024

Shares 359,954 Value ($000) $997 Avg Close $2.62 Range $2.40 - $2.97

Q3 2024

Shares 361,854 Value ($000) $930 Avg Close $2.57 Range $2.29 - $2.88

Q2 2024

Shares 361,854 Value ($000) $999 Avg Close $3.10 Range $2.64 - $3.99

Q1 2024

Shares 351,389 Value ($000) $1,237 Avg Close $3.28 Range $2.83 - $3.73

Q4 2023

Shares 329,369 Value ($000) $968 Avg Close $3.22 Range $2.87 - $3.98

Q3 2023

Shares 328,956 Value ($000) $1,253 Avg Close $4.05 Range $3.60 - $4.80

Q2 2023

Shares 328,956 Value ($000) $1,411 Avg Close $4.43 Range $3.78 - $4.99

Q1 2023

Shares 328,956 Value ($000) $1,635 Avg Close $4.38 Range $3.70 - $4.97

Q4 2022

Shares 328,956 Value ($000) $1,306 Avg Close $3.61 Range $2.61 - $4.44

Q3 2022

Shares 328,844 Value ($000) $917 Avg Close $3.21 Range $2.76 - $3.85

Q2 2022

Shares 328,844 Value ($000) $1,010 Avg Close $3.31 Range $2.95 - $4.34

Q1 2022

Shares 328,844 Value ($000) $1,398 Avg Close $4.67 Range $4.19 - $5.12

Q4 2021

Shares 330,939 Value ($000) $1,526 Avg Close $5.35 Range $4.19 - $6.87

Q3 2021

Shares 331,391 Value ($000) $2,164 Avg Close $6.09 Range $4.80 - $7.52

Q2 2021

Shares 331,391 Value ($000) $2,257 Avg Close $5.94 Range $5.15 - $7.24

Q1 2021

Shares 326,267 Value ($000) $1,768 Avg Close $5.33 Range $4.03 - $6.10

Q4 2020

Shares 326,267 Value ($000) $1,345 Avg Close $3.85 Range $2.99 - $4.85

Q3 2020

Shares 326,267 Value ($000) $1,038 Avg Close $3.52 Range $2.86 - $4.06

Q2 2020

Shares 326,267 Value ($000) $1,103 Avg Close $3.13 Range $2.69 - $3.93

Q1 2020

Shares 326,267 Value ($000) $917 Avg Close $3.66 Range $2.34 - $4.48

Q4 2019

Shares 326,267 Value ($000) $1,367 Avg Close $4.01 Range $3.23 - $4.52

Q3 2019

Shares 326,267 Value ($000) $1,269 Avg Close $4.04 Range $3.60 - $4.63

Q2 2019

Shares 324,798 Value ($000) $1,461 Avg Close $4.78 Range $4.12 - $5.78

Q1 2019

Shares 324,798 Value ($000) $1,803 Avg Close $5.88 Range $5.00 - $6.88

Q4 2018

Shares 320,840 Value ($000) $1,604 Avg Close $4.94 Range $4.27 - $5.65

Q3 2018

Shares 365,200 Value ($000) $1,910 Avg Close $5.62 Range $4.88 - $6.75

Q2 2018

Shares 366,197 Value ($000) $2,325 Avg Close $7.06 Range $6.04 - $7.97

Q1 2018

Shares 371,447 Value ($000) $2,764 Avg Close $9.95 Range $6.75 - $12.52

Q4 2017

Shares 365,792 Value ($000) $4,404 Avg Close $11.84 Range $8.53 - $16.49

Q3 2017

Shares 326,680 Value ($000) $3,254 Avg Close $8.55 Range $7.03 - $10.19

Q2 2017

Shares 272,922 Value ($000) $2,170 Avg Close $6.67 Range $4.56 - $9.37

Q1 2017

Shares 256,408 Value ($000) $1,279 Avg Close $4.63 Range $4.01 - $5.30

Q4 2016

Shares 250,808 Value ($000) $1,049 Avg Close $3.97 Range $3.39 - $4.40

Q3 2016

Shares 251,208 Value ($000) $877 Avg Close $3.26 Range $2.39 - $3.95

Q2 2016

Shares 250,108 Value ($000) $588 Avg Close $2.42 Range $2.07 - $2.70

Q1 2016

Shares 261,353 Value ($000) $674 Avg Close $2.28 Range $2.03 - $2.80

Q4 2015

Shares 261,353 Value ($000) $658 Avg Close $2.73 Range $2.34 - $3.20

Q3 2015

Shares 261,353 Value ($000) $609 Avg Close $2.85 Range $2.26 - $3.62

Q2 2015

Shares 261,353 Value ($000) $894 Avg Close $3.39 Range $2.85 - $3.80

Q1 2015

Shares 258,609 Value ($000) $957 Avg Close $3.30 Range $3.01 - $3.75

Q4 2014

Shares 256,409 Value ($000) $874 Avg Close $3.33 Range $2.92 - $3.83

Q3 2014

Shares 256,409 Value ($000) $844 Avg Close $3.08 Range $2.67 - $3.63

Q2 2014

Shares 228,498 Value ($000) $688 Avg Close $2.68 Range $2.18 - $3.15

Q1 2014

Shares 215,499 Value ($000) $517 Avg Close $2.77 Range $2.16 - $3.48

Q4 2013

Shares 196,113 Value ($000) $504 Avg Close $2.80 Range $2.27 - $3.25

Q3 2013

Shares 181,193 Value ($000) $556 Avg Close $2.40 Range $2.02 - $3.24

Q2 2013

Shares 181,193 Value ($000) $404 Avg Close $1.82 Range $1.41 - $2.25

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	350,374	$1,111	$3.00	$2.49 - $3.42
Q3 2025	358,458	$1,197	$3.24	$2.63 - $3.57
Q2 2025	358,458	$1,100	$2.52	$1.88 - $3.12
Q1 2025	358,458	$878	$2.79	$2.31 - $3.14
Q4 2024	359,954	$997	$2.62	$2.40 - $2.97
Q3 2024	361,854	$930	$2.57	$2.29 - $2.88
Q2 2024	361,854	$999	$3.10	$2.64 - $3.99
Q1 2024	351,389	$1,237	$3.28	$2.83 - $3.73
Q4 2023	329,369	$968	$3.22	$2.87 - $3.98
Q3 2023	328,956	$1,253	$4.05	$3.60 - $4.80
Q2 2023	328,956	$1,411	$4.43	$3.78 - $4.99
Q1 2023	328,956	$1,635	$4.38	$3.70 - $4.97
Q4 2022	328,956	$1,306	$3.61	$2.61 - $4.44
Q3 2022	328,844	$917	$3.21	$2.76 - $3.85
Q2 2022	328,844	$1,010	$3.31	$2.95 - $4.34
Q1 2022	328,844	$1,398	$4.67	$4.19 - $5.12
Q4 2021	330,939	$1,526	$5.35	$4.19 - $6.87
Q3 2021	331,391	$2,164	$6.09	$4.80 - $7.52
Q2 2021	331,391	$2,257	$5.94	$5.15 - $7.24
Q1 2021	326,267	$1,768	$5.33	$4.03 - $6.10
Q4 2020	326,267	$1,345	$3.85	$2.99 - $4.85
Q3 2020	326,267	$1,038	$3.52	$2.86 - $4.06
Q2 2020	326,267	$1,103	$3.13	$2.69 - $3.93
Q1 2020	326,267	$917	$3.66	$2.34 - $4.48
Q4 2019	326,267	$1,367	$4.01	$3.23 - $4.52
Q3 2019	326,267	$1,269	$4.04	$3.60 - $4.63
Q2 2019	324,798	$1,461	$4.78	$4.12 - $5.78
Q1 2019	324,798	$1,803	$5.88	$5.00 - $6.88
Q4 2018	320,840	$1,604	$4.94	$4.27 - $5.65
Q3 2018	365,200	$1,910	$5.62	$4.88 - $6.75
Q2 2018	366,197	$2,325	$7.06	$6.04 - $7.97
Q1 2018	371,447	$2,764	$9.95	$6.75 - $12.52
Q4 2017	365,792	$4,404	$11.84	$8.53 - $16.49
Q3 2017	326,680	$3,254	$8.55	$7.03 - $10.19
Q2 2017	272,922	$2,170	$6.67	$4.56 - $9.37
Q1 2017	256,408	$1,279	$4.63	$4.01 - $5.30
Q4 2016	250,808	$1,049	$3.97	$3.39 - $4.40
Q3 2016	251,208	$877	$3.26	$2.39 - $3.95
Q2 2016	250,108	$588	$2.42	$2.07 - $2.70
Q1 2016	261,353	$674	$2.28	$2.03 - $2.80
Q4 2015	261,353	$658	$2.73	$2.34 - $3.20
Q3 2015	261,353	$609	$2.85	$2.26 - $3.62
Q2 2015	261,353	$894	$3.39	$2.85 - $3.80
Q1 2015	258,609	$957	$3.30	$3.01 - $3.75
Q4 2014	256,409	$874	$3.33	$2.92 - $3.83
Q3 2014	256,409	$844	$3.08	$2.67 - $3.63
Q2 2014	228,498	$688	$2.68	$2.18 - $3.15
Q1 2014	215,499	$517	$2.77	$2.16 - $3.48
Q4 2013	196,113	$504	$2.80	$2.27 - $3.25
Q3 2013	181,193	$556	$2.40	$2.02 - $3.24
Q2 2013	181,193	$404	$1.82	$1.41 - $2.25