PLEXUS CORP

Ticker: PLXS CUSIP: 729132100 Class: EQTY

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

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

Q1 2017

Shares 256 Value ($000) $15 Avg Close $55.75 Range $50.91 - $58.74

Q3 2013

Shares 703 Value ($000) $26 Avg Close $34.02 Range $29.57 - $37.38

Q2 2013

Shares 403 Value ($000) $12 Avg Close $27.78 Range $23.71 - $30.67

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2017	256	$15	$55.75	$50.91 - $58.74
Q3 2013	703	$26	$34.02	$29.57 - $37.38
Q2 2013	403	$12	$27.78	$23.71 - $30.67