Price Alert

Repligen Corporation (RGEN)

NASDAQ: RGEN · Real-Time Price · USD

148.73

3.50 (2.41%)

At close: Oct 03, 2025, 3:59 PM

148.85

0.08%

After-hours: Oct 03, 2025, 07:53 PM EDT

RGEN Option Overview

Overview for all option chains of RGEN. As of October 05, 2025, RGEN options have an IV of 137.63% and an IV rank of 111.25%. The volume is 742 contracts, which is 356.73% of average daily volume of 208 contracts. The volume put-call ratio is 0.29, indicating a bullish sentiment in the market.

Implied Volatility

Implied Volatility (30d)

137.63%

IV Rank

100%

Historical Volatility

52.13%

IV Low

45.52% on Feb 10, 2025

IV High

128.32% on Oct 03, 2025

Open Interest (OI)

Today's Open Interest

11,198

Put-Call Ratio

1.87

Put Open Interest

7,302

Call Open Interest

3,896

Open Interest Avg (30-day)

9,747

Today vs Open Interest Avg (30-day)

114.89%

Option Volume

Today's Volume

742

Put-Call Ratio

0.29

Put Volume

167

Call Volume

575

Volume Avg (30-day)

208

Today vs Volume Avg (30-day)

356.73%

Option Chain Statistics

This table provides a comprehensive overview of all RGEN options grouped by their expiration dates.

Expiration	Call Vol	Put Vol	P/C Vol	Call OI	Put OI	P/C OI	Implied Volatility	Max Pain
Oct 17, 2025	194	9	0.05	822	262	0.32	137.63%	115
Nov 21, 2025	308	150	0.49	370	287	0.78	90.38%	125
Dec 19, 2025	70	2	0.03	2,110	5,954	2.82	76.9%	140
Jan 16, 2026	0	0	0	0	0	0	n/a	170
Feb 20, 2026	1	6	6	111	40	0.36	64.74%	110
May 15, 2026	0	0	0	23	0	0	60.57%	65
Jun 18, 2026	2	0	0	460	759	1.65	60.11%	130