DATA I O CORP

Ticker: DAIO CUSIP: 237690102 Class: Stock

PDT Partners, LLC's Holding History (CIK: 0001564702)

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

Q3 2018

Shares 19,050 Value ($000) $100 Avg Close $5.62 Range $4.88 - $6.75

Q2 2018

Shares 31,506 Value ($000) $200 Avg Close $7.06 Range $6.04 - $7.97

Q1 2018

Shares 54,600 Value ($000) $406 Avg Close $9.95 Range $6.75 - $12.52

Q4 2017

Shares 131,600 Value ($000) $1,584 Avg Close $11.84 Range $8.53 - $16.49

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2018	19,050	$100	$5.62	$4.88 - $6.75
Q2 2018	31,506	$200	$7.06	$6.04 - $7.97
Q1 2018	54,600	$406	$9.95	$6.75 - $12.52
Q4 2017	131,600	$1,584	$11.84	$8.53 - $16.49