Question 1

How many shares of RGEN does FRED ALGER MANAGEMENT, LLC own?

Accepted Answer

As of 2026-Q1, FRED ALGER MANAGEMENT, LLC holds 434,774 shares of RGEN (REPLIGEN CORP).

Question 2

What is FRED ALGER MANAGEMENT, LLC's RGEN position worth?

Accepted Answer

As of 2026-Q1, FRED ALGER MANAGEMENT, LLC's RGEN position is worth $51.2M.

Question 3

Is FRED ALGER MANAGEMENT, LLC buying or selling RGEN?

Accepted Answer

In 2026-Q1, FRED ALGER MANAGEMENT, LLC decreased their RGEN position (-52.3% change in shares).

Question 4

When did FRED ALGER MANAGEMENT, LLC first buy RGEN?

Accepted Answer

Based on available 13F filings, FRED ALGER MANAGEMENT, LLC first reported a position in RGEN in 2024-Q2. They have held the position across 30 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q1 Latest	Decreased	434,774	-52.3%	$51.2M	0.2%	$123.06	0
2025-Q4	Increased	911,527	+154.3%	$149.4M	0.6%	$166.59	69
2025-Q3	Increased	358,422	+19.6%	$47.9M	0.2%	$124.09	41
2025-Q2	Decreased	299,556	-31.5%	$37.3M	0.2%	$123.56	0
2025-Q1	Increased	437,037	+21.6%	$55.6M	0.3%	$133.41	42
2024-Q4	Decreased	359,507	-9.8%	$51.7M	0.2%	$143.81	0
2024-Q3	Increased	398,554	+29.5%	$59.3M	0.3%	$145.93	44
2024-Q2	Decreased	307,723	-27.8%	$38.8M	0.2%	$126.06	0

RGENShowing 8 of 30 quarters

RGEN
Showing 8 of 30 quarters