REPLIGEN CORP

Ticker: RGEN CUSIP: 759916109 Class: Common Stock

Rafferty Asset Management, LLC's Holding History (CIK: 0001389426)

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

Q3 2019

Shares 81,308 Value ($000) $6,236 Avg Close $87.47 Range $75.80 - $99.25

Q2 2019

Shares 45,141 Value ($000) $3,880 Avg Close $68.16 Range $52.87 - $86.16

Q1 2019

Shares 52,395 Value ($000) $3,095 Avg Close $57.51 Range $49.07 - $63.41

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2019	81,308	$6,236	$87.47	$75.80 - $99.25
Q2 2019	45,141	$3,880	$68.16	$52.87 - $86.16
Q1 2019	52,395	$3,095	$57.51	$49.07 - $63.41