RGEN · Repligen Corp · Options Chain

Track RGEN — free

$165.05 -3.48 (-2.06%)

S&P 400 member Russell 1000 member Rebalance outlook locked

Market Cap

$9.46B

56.44M

Options Chain

Underlying $165.05 · today Options Calculator

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Positioning

Sep 18, 2026 · 9 days to expiry · 48 contracts · mixed daily-bar sessions · Jul 21, 2026–Sep 9, 2026; 13 unknown

Put / call OI

1.23

Balanced positioning

Open interest

1,567

as of Sep 4, 2026

Volume

—

dated and unknown daily-bar sessions

Max pain

$160.00

$5.05 below spot

ATM implied vol

48.2%

market's expected move

Open interest by strike

Calls Puts

100

105

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

200

210

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Sep 18 9d Oct 16 37d Nov 20 72d Dec 18 100d Feb 19 163d Jun 17 281d Dec 17 464d

Calls								Puts
OI	Vol	IV	Δ	Bid	Ask	Last	Strike	Last	Bid	Ask	Δ	IV	Vol	OI
—	—	—	—	$73.70	$77.20	—		—	$0.00	$2.15	—	—	—	—
Call · $90 In the money Daily-bar session Unknown Quote as of 2026-09-09 19:59:55.442 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $90 Daily-bar session Unknown Quote as of 2026-09-09 19:59:50.079 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$69.00	$72.20	—		—	$0.00	$2.15	—	—	—	—
Call · $95 In the money Daily-bar session Unknown Quote as of 2026-09-09 19:59:57.475 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $95 Daily-bar session Unknown Quote as of 2026-09-09 19:59:50.217 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
1	1	—	—	$63.50	$67.20	$38.40		—	$0.00	$0.55	—	—	—	—
Call · $100 In the money Daily-bar session Jul 21, 2026 Quote as of 2026-09-09 19:59:52.080 UTC Last $38.40 Breakeven $138.40 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 4, 2026 Model this call Put · $100 Daily-bar session Unknown Quote as of 2026-09-09 19:56:44.247 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
1	1	—	—	$58.60	$62.20	$29.90		—	$0.00	$2.15	—	—	—	—
Call · $105 In the money Daily-bar session Jul 21, 2026 Quote as of 2026-09-09 19:59:58.606 UTC Last $29.90 Breakeven $134.90 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 4, 2026 Model this call Put · $105 Daily-bar session Unknown Quote as of 2026-09-09 19:59:41.536 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
1	1	—	—	$53.60	$57.20	$30.10		$1.20	$0.00	$2.15	—	—	1	1
Call · $110 In the money Daily-bar session Jul 21, 2026 Quote as of 2026-09-09 19:59:55.442 UTC Last $30.10 Breakeven $140.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 4, 2026 Model this call Put · $110 Daily-bar session Jul 28, 2026 Quote as of 2026-09-09 19:59:41.536 UTC Last $1.20 Breakeven $108.80 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 4, 2026 Model this put
—	—	—	—	$48.50	$52.20	—		$2.00	$0.00	$2.15	—	—	1	1
Call · $115 In the money Daily-bar session Unknown Quote as of 2026-09-09 19:59:56.838 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $115 Daily-bar session Jul 28, 2026 Quote as of 2026-09-09 19:59:41.536 UTC Last $2.00 Breakeven $113.00 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 4, 2026 Model this put
—	—	—	—	$43.60	$47.20	—		—	$0.00	$2.15	—	—	—	—
Call · $120 In the money Daily-bar session Unknown Quote as of 2026-09-09 19:59:57.641 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $120 Daily-bar session Unknown Quote as of 2026-09-09 19:59:30.479 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
1	1	93.8%	0.976	$38.60	$42.20	$58.60		$2.00	$0.00	$2.15	—	—	1	1
Call · $125 In the money Daily-bar session Aug 20, 2026 Quote as of 2026-09-09 19:59:34.388 UTC Last $58.60 Breakeven $183.60 Implied vol 93.8% Delta 0.976 ≈98% ITM Gamma 0.002 Theta -0.09 Vega 0.015 Open interest 1 OI effective date Sep 4, 2026 Model this call Put · $125 Daily-bar session Aug 5, 2026 Quote as of 2026-09-09 19:59:30.479 UTC Last $2.00 Breakeven $123.00 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 4, 2026 Model this put
1	3	82.1%	0.973	$33.50	$37.30	$27.50		$2.84	$0.00	$2.20	—	—	1	2
Call · $130 In the money Daily-bar session Aug 5, 2026 Quote as of 2026-09-09 19:59:50.722 UTC Last $27.50 Breakeven $157.50 Implied vol 82.1% Delta 0.973 ≈97% ITM Gamma 0.003 Theta -0.087 Vega 0.016 Open interest 1 OI effective date Sep 4, 2026 Model this call Put · $130 Daily-bar session Aug 5, 2026 Quote as of 2026-09-09 19:59:30.479 UTC Last $2.84 Breakeven $127.16 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 OI effective date Sep 4, 2026 Model this put
—	—	75.8%	0.96	$28.70	$32.30	—		$3.58	$0.00	$2.20	—	—	100	1
Call · $135 In the money Daily-bar session Unknown Quote as of 2026-09-09 19:59:55.442 UTC Last — Breakeven — Implied vol 75.8% Delta 0.96 ≈96% ITM Gamma 0.004 Theta -0.106 Vega 0.022 Open interest — OI effective date — Model this call Put · $135 Daily-bar session Aug 5, 2026 Quote as of 2026-09-09 19:59:30.479 UTC Last $3.58 Breakeven $131.42 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 4, 2026 Model this put
5	3	75.7%	0.927	$24.30	$27.40	$28.86		$1.70	$0.05	$2.30	-0.102	87.9%	25	25
Call · $140 In the money Daily-bar session Aug 17, 2026 Quote as of 2026-09-09 19:59:54.383 UTC Last $28.86 Breakeven $168.86 Implied vol 75.7% Delta 0.927 ≈93% ITM Gamma 0.007 Theta -0.165 Vega 0.036 Open interest 5 OI effective date Sep 4, 2026 Model this call Put · $140 Daily-bar session Aug 10, 2026 Quote as of 2026-09-09 19:59:30.740 UTC Last $1.70 Breakeven $138.30 Implied vol 87.9% Delta -0.102 ≈10% ITM Gamma 0.008 Theta -0.224 Vega 0.046 Open interest 25 OI effective date Sep 4, 2026 Model this put
3	3	61.7%	0.918	$19.00	$22.60	$42.60		$1.50	$0.00	$2.40	—	—	2	12
Call · $145 In the money Daily-bar session Aug 20, 2026 Quote as of 2026-09-09 19:59:41.942 UTC Last $42.60 Breakeven $187.60 Implied vol 61.7% Delta 0.918 ≈92% ITM Gamma 0.009 Theta -0.147 Vega 0.039 Open interest 3 OI effective date Sep 4, 2026 Model this call Put · $145 Daily-bar session Aug 14, 2026 Quote as of 2026-09-09 19:59:52.796 UTC Last $1.50 Breakeven $143.50 Implied vol — Delta — Gamma — Theta — Vega — Open interest 12 OI effective date Sep 4, 2026 Model this put
10	2	56.2%	0.872	$14.30	$18.00	$35.03		$0.62	$0.00	$2.70	—	—	1	581
Call · $150 In the money Daily-bar session Aug 25, 2026 Quote as of 2026-09-09 19:59:43.065 UTC Last $35.03 Breakeven $185.03 Implied vol 56.2% Delta 0.872 ≈87% ITM Gamma 0.014 Theta -0.182 Vega 0.054 Open interest 10 OI effective date Sep 4, 2026 Model this call Put · $150 Daily-bar session Sep 4, 2026 Quote as of 2026-09-09 19:59:49.647 UTC Last $0.62 Breakeven $149.38 Implied vol — Delta — Gamma — Theta — Vega — Open interest 581 OI effective date Sep 4, 2026 Model this put
1	1	52.5%	0.792	$10.30	$13.40	$15.04		$1.71	$0.00	$3.40	—	—	130	130
Call · $155 In the money Daily-bar session Sep 8, 2026 Quote as of 2026-09-09 19:59:41.537 UTC Last $15.04 Breakeven $170.04 Implied vol 52.5% Delta 0.792 ≈79% ITM Gamma 0.021 Theta -0.228 Vega 0.074 Open interest 1 OI effective date Sep 4, 2026 Model this call Put · $155 Daily-bar session Sep 1, 2026 Quote as of 2026-09-09 19:59:52.795 UTC Last $1.71 Breakeven $153.29 Implied vol — Delta — Gamma — Theta — Vega — Open interest 130 OI effective date Sep 4, 2026 Model this put
111	1	49.5%	0.674	$6.90	$9.20	$11.14		$1.70	$2.10	$4.90	-0.342	56.3%	2	2
Call · $160 In the money Daily-bar session Sep 8, 2026 Quote as of 2026-09-09 19:59:52.789 UTC Last $11.14 Breakeven $171.14 Implied vol 49.5% Delta 0.674 ≈67% ITM Gamma 0.028 Theta -0.267 Vega 0.093 Open interest 111 OI effective date Sep 4, 2026 Model this call Put · $160 Daily-bar session Aug 28, 2026 Quote as of 2026-09-09 19:59:46.250 UTC Last $1.70 Breakeven $158.30 Implied vol 56.3% Delta -0.342 ≈34% ITM Gamma 0.025 Theta -0.292 Vega 0.095 Open interest 2 OI effective date Sep 4, 2026 Model this put
162	50	48.4%	0.522	$4.30	$5.90	$4.60		$4.00	$3.50	$6.20	-0.479	47.9%	2	56
Call · $165 In the money Daily-bar session Sep 9, 2026 Quote as of 2026-09-09 19:59:49.638 UTC Last $4.60 Breakeven $169.60 Implied vol 48.4% Delta 0.522 ≈52% ITM Gamma 0.032 Theta -0.286 Vega 0.103 Open interest 162 OI effective date Sep 4, 2026 Model this call Put · $165 Daily-bar session Sep 3, 2026 Quote as of 2026-09-09 19:59:52.898 UTC Last $4.00 Breakeven $161.00 Implied vol 47.9% Delta -0.479 ≈48% ITM Gamma 0.032 Theta -0.266 Vega 0.103 Open interest 56 OI effective date Sep 4, 2026 Model this put
Underlying $165.05
8	3	45.2%	0.357	$2.05	$3.40	$9.50		$2.95	$6.10	$8.90	-0.644	45%	38	37
Call · $170 Daily-bar session Sep 1, 2026 Quote as of 2026-09-09 19:59:45.239 UTC Last $9.50 Breakeven $179.50 Implied vol 45.2% Delta 0.357 ≈36% ITM Gamma 0.032 Theta -0.248 Vega 0.097 Open interest 8 OI effective date Sep 4, 2026 Model this call Put · $170 In the money Daily-bar session Aug 25, 2026 Quote as of 2026-09-09 19:59:39.848 UTC Last $2.95 Breakeven $167.05 Implied vol 45% Delta -0.644 ≈64% ITM Gamma 0.032 Theta -0.23 Vega 0.097 Open interest 37 OI effective date Sep 4, 2026 Model this put
25	1	51.6%	0.251	$0.45	$3.40	$11.13		$26.00	$10.10	$13.10	-0.756	50.1%	1	1
Call · $175 Daily-bar session Aug 26, 2026 Quote as of 2026-09-09 19:59:33.944 UTC Last $11.13 Breakeven $186.13 Implied vol 51.6% Delta 0.251 ≈25% ITM Gamma 0.024 Theta -0.24 Vega 0.083 Open interest 25 OI effective date Sep 4, 2026 Model this call Put · $175 In the money Daily-bar session Jul 28, 2026 Quote as of 2026-09-09 19:59:54.109 UTC Last $26.00 Breakeven $149.00 Implied vol 50.1% Delta -0.756 ≈76% ITM Gamma 0.024 Theta -0.213 Vega 0.081 Open interest 1 OI effective date Sep 4, 2026 Model this put
53	48	48.4%	0.138	$0.50	$1.20	$1.00		$14.00	$13.90	$16.40	-0.918	38.4%	1	10
Call · $180 Daily-bar session Sep 9, 2026 Quote as of 2026-09-09 19:59:06.735 UTC Last $1.00 Breakeven $181.00 Implied vol 48.4% Delta 0.138 ≈14% ITM Gamma 0.018 Theta -0.156 Vega 0.057 Open interest 53 OI effective date Sep 4, 2026 Model this call Put · $180 In the money Daily-bar session Sep 8, 2026 Quote as of 2026-09-09 19:59:41.536 UTC Last $14.00 Breakeven $166.00 Implied vol 38.4% Delta -0.918 ≈92% ITM Gamma 0.015 Theta -0.067 Vega 0.039 Open interest 10 OI effective date Sep 4, 2026 Model this put
22	1	—	—	$0.00	$2.30	$1.80		$14.60	$18.00	$21.70	-0.979	34.9%	2	2
Call · $185 Daily-bar session Sep 2, 2026 Quote as of 2026-09-09 19:59:38.472 UTC Last $1.80 Breakeven $186.80 Implied vol — Delta — Gamma — Theta — Vega — Open interest 22 OI effective date Sep 4, 2026 Model this call Put · $185 In the money Daily-bar session Sep 1, 2026 Quote as of 2026-09-09 19:59:54.231 UTC Last $14.60 Breakeven $170.40 Implied vol 34.9% Delta -0.979 ≈98% ITM Gamma 0.006 Theta -0.007 Vega 0.013 Open interest 2 OI effective date Sep 4, 2026 Model this put
135	1	—	—	$0.00	$2.15	$0.75		$12.90	$22.90	$26.50	—	—	2	2
Call · $190 Daily-bar session Sep 3, 2026 Quote as of 2026-09-09 19:56:44.495 UTC Last $0.75 Breakeven $190.75 Implied vol — Delta — Gamma — Theta — Vega — Open interest 135 OI effective date Sep 4, 2026 Model this call Put · $190 In the money Daily-bar session Aug 24, 2026 Quote as of 2026-09-09 19:59:58.606 UTC Last $12.90 Breakeven $177.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 OI effective date Sep 4, 2026 Model this put
156	1	—	—	$0.00	$2.15	$0.70		—	$27.90	$31.10	—	—	—	—
Call · $195 Daily-bar session Sep 2, 2026 Quote as of 2026-09-09 19:59:41.536 UTC Last $0.70 Breakeven $195.70 Implied vol — Delta — Gamma — Theta — Vega — Open interest 156 OI effective date Sep 4, 2026 Model this call Put · $195 In the money Daily-bar session Unknown Quote as of 2026-09-09 19:59:56.992 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
6	5	—	—	$0.00	$2.15	$0.40		—	$32.90	$36.50	—	—	—	—
Call · $200 Daily-bar session Sep 2, 2026 Quote as of 2026-09-09 19:59:30.479 UTC Last $0.40 Breakeven $200.40 Implied vol — Delta — Gamma — Theta — Vega — Open interest 6 OI effective date Sep 4, 2026 Model this call Put · $200 In the money Daily-bar session Unknown Quote as of 2026-09-09 19:59:34.356 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
1	1	—	—	$0.00	$2.15	$0.69		—	$42.90	$46.10	—	—	—	—
Call · $210 Daily-bar session Aug 24, 2026 Quote as of 2026-09-09 19:58:46.507 UTC Last $0.69 Breakeven $210.69 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 4, 2026 Model this call Put · $210 In the money Daily-bar session Unknown Quote as of 2026-09-09 19:59:55.940 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put

About this data

Each contract's last price, day range and volume belong to the daily-bar session shown in its details; unknown means the source omitted that timestamp. Open interest has its own effective date shown separately; implied volatility and greeks are model values computed when fetched. This chain has mixed daily-bar sessions · Jul 21, 2026–Sep 9, 2026; 13 unknown. Positioning totals are shown only when every returned open-interest value has the same known effective date. Bid and ask are real-time consolidated OPRA readings.

In-the-money strikes are tinted, deepening toward the money, and the bar beside each open-interest figure scales to the heaviest strike shown. Max pain is the listed strike where the most open interest would expire worthless — a positioning reference, not a forecast.

Key facts CIK 730272 CUSIP 759916109 13F (30d) 277 filings 275 filers Visit website Investor relations