RGEN · Repligen Corp

Track RGEN — free Ask ALVIS about RGEN

$131.96 -5.65 (-4.10%) At close · Jul 24

Market Cap

$7.44B

56.41M

Options Chain

15-min delayed Underlying $131.96 · today Options Calculator

Positioning

Aug 21, 2026 · 26 days to expiry · 68 contracts

Put / call OI

0.57

Call-heavy positioning

Open interest

3,113

contracts outstanding

Volume

520

traded today

Max pain

$125.00

$6.96 below spot

ATM implied vol

62.7%

market's expected move

Open interest by strike · near the money

Calls Puts

100

105

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

200

210

220

230

240

250

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 26d Sep 18 54d Nov 20 117d Dec 18 145d Feb 19 208d Jun 17 326d Dec 17 509d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	124.7%	0.995	—		$0.60	-0.018	159.1%	1	1
Call · $60 In the money Last — Breakeven — Implied vol 124.7% Delta 0.995 ≈99% ITM Gamma 0 Theta -0.018 Vega 0.005 Open interest 0 Model this call Put · $60 Last $0.60 Breakeven $59.40 Implied vol 159.1% Delta -0.018 ≈2% ITM Gamma 0.001 Theta -0.047 Vega 0.012 Open interest 1 Model this put
0	—	124.4%	0.99	—		$0.90	-0.02	144.9%	1	3
Call · $65 In the money Last — Breakeven — Implied vol 124.4% Delta 0.99 ≈99% ITM Gamma 0.001 Theta -0.029 Vega 0.012 Open interest 0 Model this call Put · $65 Last $0.90 Breakeven $64.10 Implied vol 144.9% Delta -0.02 ≈2% ITM Gamma 0.001 Theta -0.047 Vega 0.025 Open interest 3 Model this put
0	—	145.9%	0.966	—		$1.35	-0.025	134.8%	1	6
Call · $70 In the money Last — Breakeven — Implied vol 145.9% Delta 0.966 ≈97% ITM Gamma 0.001 Theta -0.08 Vega 0.026 Open interest 0 Model this call Put · $70 Last $1.35 Breakeven $68.65 Implied vol 134.8% Delta -0.025 ≈2% ITM Gamma 0.001 Theta -0.053 Vega 0.026 Open interest 6 Model this put
1	1	118.6%	0.975	$52.60		$2.05	-0.024	117.9%	1	6
Call · $75 In the money Last $52.60 Breakeven $127.60 Implied vol 118.6% Delta 0.975 ≈98% ITM Gamma 0.001 Theta -0.053 Vega 0.026 Open interest 1 Model this call Put · $75 Last $2.05 Breakeven $72.95 Implied vol 117.9% Delta -0.024 ≈2% ITM Gamma 0.001 Theta -0.045 Vega 0.026 Open interest 6 Model this put
0	—	102.3%	0.978	—		$1.20	-0.026	105.7%	1	8
Call · $80 In the money Last — Breakeven — Implied vol 102.3% Delta 0.978 ≈98% ITM Gamma 0.001 Theta -0.045 Vega 0.027 Open interest 0 Model this call Put · $80 Last $1.20 Breakeven $78.80 Implied vol 105.7% Delta -0.026 ≈3% ITM Gamma 0.002 Theta -0.043 Vega 0.027 Open interest 8 Model this put
1	1	84.2%	0.982	$42.10		$1.65	-0.062	120.3%	1	6
Call · $85 In the money Last $42.10 Breakeven $127.10 Implied vol 84.2% Delta 0.982 ≈98% ITM Gamma 0.002 Theta -0.034 Vega 0.014 Open interest 1 Model this call Put · $85 Last $1.65 Breakeven $83.35 Implied vol 120.3% Delta -0.062 ≈6% ITM Gamma 0.003 Theta -0.099 Vega 0.049 Open interest 6 Model this put
0	—	81.3%	0.971	—		$1.11	-0.062	103.5%	20	25
Call · $90 In the money Last — Breakeven — Implied vol 81.3% Delta 0.971 ≈97% ITM Gamma 0.002 Theta -0.045 Vega 0.029 Open interest 0 Model this call Put · $90 Last $1.11 Breakeven $88.89 Implied vol 103.5% Delta -0.062 ≈6% ITM Gamma 0.003 Theta -0.085 Vega 0.05 Open interest 25 Model this put
0	—	75.8%	0.959	—		$4.80	-0.037	73.6%	1	141
Call · $95 In the money Last — Breakeven — Implied vol 75.8% Delta 0.959 ≈96% ITM Gamma 0.003 Theta -0.054 Vega 0.03 Open interest 0 Model this call Put · $95 Last $4.80 Breakeven $90.20 Implied vol 73.6% Delta -0.037 ≈4% ITM Gamma 0.003 Theta -0.04 Vega 0.03 Open interest 141 Model this put
32	40	81.1%	0.919	$47.00		$1.38	-0.057	71.6%	21	26
Call · $100 In the money Last $47.00 Breakeven $147.00 Implied vol 81.1% Delta 0.919 ≈92% ITM Gamma 0.005 Theta -0.091 Vega 0.053 Open interest 32 Model this call Put · $100 Last $1.38 Breakeven $98.62 Implied vol 71.6% Delta -0.057 ≈6% ITM Gamma 0.005 Theta -0.056 Vega 0.053 Open interest 26 Model this put
0	—	76.5%	0.893	—		$1.15	-0.06	59.1%	2	4
Call · $105 In the money Last — Breakeven — Implied vol 76.5% Delta 0.893 ≈89% ITM Gamma 0.007 Theta -0.106 Vega 0.055 Open interest 0 Model this call Put · $105 Last $1.15 Breakeven $103.85 Implied vol 59.1% Delta -0.06 ≈6% ITM Gamma 0.006 Theta -0.047 Vega 0.054 Open interest 4 Model this put
0	1	66.9%	0.869	$18.60		$1.10	-0.096	56.3%	3	10
Call · $110 In the money Last $18.60 Breakeven $128.60 Implied vol 66.9% Delta 0.869 ≈87% ITM Gamma 0.009 Theta -0.106 Vega 0.084 Open interest 0 Model this call Put · $110 Last $1.10 Breakeven $108.90 Implied vol 56.3% Delta -0.096 ≈10% ITM Gamma 0.009 Theta -0.064 Vega 0.056 Open interest 10 Model this put
28	25	65.5%	0.813	$33.85		$2.20	-0.175	61.2%	1	6
Call · $115 In the money Last $33.85 Breakeven $148.85 Implied vol 65.5% Delta 0.813 ≈81% ITM Gamma 0.012 Theta -0.129 Vega 0.086 Open interest 28 Model this call Put · $115 Last $2.20 Breakeven $112.80 Implied vol 61.2% Delta -0.175 ≈17% ITM Gamma 0.012 Theta -0.105 Vega 0.086 Open interest 6 Model this put
254	1	64.5%	0.742	$26.98		$2.12	-0.246	59.8%	33	549
Call · $120 In the money Last $26.98 Breakeven $146.98 Implied vol 64.5% Delta 0.742 ≈74% ITM Gamma 0.014 Theta -0.15 Vega 0.115 Open interest 254 Model this call Put · $120 Last $2.12 Breakeven $117.88 Implied vol 59.8% Delta -0.246 ≈25% ITM Gamma 0.015 Theta -0.125 Vega 0.115 Open interest 549 Model this put
1.1k	20	65.6%	0.66	$14.20		$4.80	-0.336	62%	50	85
Call · $125 In the money Last $14.20 Breakeven $139.20 Implied vol 65.6% Delta 0.66 ≈66% ITM Gamma 0.016 Theta -0.172 Vega 0.135 Open interest 1.1k Model this call Put · $125 Last $4.80 Breakeven $120.20 Implied vol 62% Delta -0.336 ≈34% ITM Gamma 0.017 Theta -0.151 Vega 0.135 Open interest 85 Model this put
65	2	64.2%	0.574	$11.85		$6.70	-0.427	61.2%	34	159
Call · $130 In the money Last $11.85 Breakeven $141.85 Implied vol 64.2% Delta 0.574 ≈57% ITM Gamma 0.017 Theta -0.178 Vega 0.138 Open interest 65 Model this call Put · $130 Last $6.70 Breakeven $123.30 Implied vol 61.2% Delta -0.427 ≈43% ITM Gamma 0.018 Theta -0.158 Vega 0.138 Open interest 159 Model this put
Underlying $131.96
110	3	67.9%	0.493	$9.00		$11.00	-0.516	62.8%	1	1
Call · $135 Last $9.00 Breakeven $144.00 Implied vol 67.9% Delta 0.493 ≈49% ITM Gamma 0.017 Theta -0.19 Vega 0.141 Open interest 110 Model this call Put · $135 In the money Last $11.00 Breakeven $124.00 Implied vol 62.8% Delta -0.516 ≈52% ITM Gamma 0.018 Theta -0.164 Vega 0.141 Open interest 1 Model this put
41	3	60.9%	0.393	$6.80		$10.55	-0.614	59.2%	11	10
Call · $140 Last $6.80 Breakeven $146.80 Implied vol 60.9% Delta 0.393 ≈39% ITM Gamma 0.018 Theta -0.166 Vega 0.144 Open interest 41 Model this call Put · $140 In the money Last $10.55 Breakeven $129.45 Implied vol 59.2% Delta -0.614 ≈61% ITM Gamma 0.019 Theta -0.148 Vega 0.126 Open interest 10 Model this put
15	3	59.9%	0.312	$4.40		$15.60	-0.691	60%	2	50
Call · $145 Last $4.40 Breakeven $149.40 Implied vol 59.9% Delta 0.312 ≈31% ITM Gamma 0.017 Theta -0.148 Vega 0.129 Open interest 15 Model this call Put · $145 In the money Last $15.60 Breakeven $129.40 Implied vol 60% Delta -0.691 ≈69% ITM Gamma 0.017 Theta -0.135 Vega 0.128 Open interest 50 Model this put
21	29	57.2%	0.229	$3.40		$11.60	-0.788	54.7%	1	1
Call · $150 Last $3.40 Breakeven $153.40 Implied vol 57.2% Delta 0.229 ≈23% ITM Gamma 0.015 Theta -0.121 Vega 0.101 Open interest 21 Model this call Put · $150 In the money Last $11.60 Breakeven $138.40 Implied vol 54.7% Delta -0.788 ≈79% ITM Gamma 0.016 Theta -0.098 Vega 0.1 Open interest 1 Model this put
61	129	59.2%	0.178	$2.30		$21.70	-0.871	51%	10	30
Call · $155 Last $2.30 Breakeven $157.30 Implied vol 59.2% Delta 0.178 ≈18% ITM Gamma 0.013 Theta -0.107 Vega 0.103 Open interest 61 Model this call Put · $155 In the money Last $21.70 Breakeven $133.30 Implied vol 51% Delta -0.871 ≈87% ITM Gamma 0.013 Theta -0.064 Vega 0.067 Open interest 30 Model this put
86	1	64.5%	0.152	$5.10		—	-0.974	40.3%	—	0
Call · $160 Last $5.10 Breakeven $165.10 Implied vol 64.5% Delta 0.152 ≈15% ITM Gamma 0.01 Theta -0.106 Vega 0.07 Open interest 86 Model this call Put · $160 In the money Last — Breakeven — Implied vol 40.3% Delta -0.974 ≈97% ITM Gamma 0.007 Theta -0.012 Vega 0.025 Open interest 0 Model this put
49	4	59.8%	0.095	$1.03		$43.30	—	—	1	1
Call · $165 Last $1.03 Breakeven $166.03 Implied vol 59.8% Delta 0.095 ≈10% ITM Gamma 0.008 Theta -0.07 Vega 0.071 Open interest 49 Model this call Put · $165 In the money Last $43.30 Breakeven $121.70 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this put
55	1	65.6%	0.087	$2.89		$21.90	—	—	6	0
Call · $170 Last $2.89 Breakeven $172.89 Implied vol 65.6% Delta 0.087 ≈9% ITM Gamma 0.007 Theta -0.072 Vega 0.072 Open interest 55 Model this call Put · $170 In the money Last $21.90 Breakeven $148.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
30	3	65.4%	0.065	$0.42		$23.10	—	—	24	0
Call · $175 Last $0.42 Breakeven $175.42 Implied vol 65.4% Delta 0.065 ≈6% ITM Gamma 0.005 Theta -0.057 Vega 0.042 Open interest 30 Model this call Put · $175 In the money Last $23.10 Breakeven $151.90 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
15	7	68%	0.054	$1.74		—	—	—	—	0
Call · $180 Last $1.74 Breakeven $181.74 Implied vol 68% Delta 0.054 ≈5% ITM Gamma 0.005 Theta -0.051 Vega 0.043 Open interest 15 Model this call Put · $180 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
11	1	69.4%	0.04	$1.15		$45.30	—	—	4	5
Call · $185 Last $1.15 Breakeven $186.15 Implied vol 69.4% Delta 0.04 ≈4% ITM Gamma 0.004 Theta -0.041 Vega 0.044 Open interest 11 Model this call Put · $185 In the money Last $45.30 Breakeven $139.70 Implied vol — Delta — Gamma — Theta — Vega — Open interest 5 Model this put
6	1	75.2%	0.042	$1.30		—	—	—	—	0
Call · $190 Last $1.30 Breakeven $191.30 Implied vol 75.2% Delta 0.042 ≈4% ITM Gamma 0.003 Theta -0.046 Vega 0.044 Open interest 6 Model this call Put · $190 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
2	1	76.5%	0.035	$0.80		$72.90	—	—	1	0
Call · $195 Last $0.80 Breakeven $195.80 Implied vol 76.5% Delta 0.035 ≈3% ITM Gamma 0.003 Theta -0.04 Vega 0.022 Open interest 2 Model this call Put · $195 In the money Last $72.90 Breakeven $122.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
4	2	88.7%	0.051	$0.15		—	-0.978	78.9%	—	0
Call · $200 Last $0.15 Breakeven $200.15 Implied vol 88.7% Delta 0.051 ≈5% ITM Gamma 0.003 Theta -0.063 Vega 0.045 Open interest 4 Model this call Put · $200 In the money Last — Breakeven — Implied vol 78.9% Delta -0.978 ≈98% ITM Gamma 0.003 Theta -0.022 Vega 0.018 Open interest 0 Model this put
5	1	90.8%	0.036	$0.40		$74.60	—	—	1	0
Call · $210 Last $0.40 Breakeven $210.40 Implied vol 90.8% Delta 0.036 ≈4% ITM Gamma 0.002 Theta -0.049 Vega 0.023 Open interest 5 Model this call Put · $210 In the money Last $74.60 Breakeven $135.40 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
3	1	104.1%	0.042	$1.00		—	—	—	—	0
Call · $220 Last $1.00 Breakeven $221.00 Implied vol 104.1% Delta 0.042 ≈4% ITM Gamma 0.002 Theta -0.064 Vega 0.023 Open interest 3 Model this call Put · $220 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
2	1	—	—	$0.45		$67.30	—	—	1	0
Call · $230 Last $0.45 Breakeven $230.45 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 Model this call Put · $230 In the money Last $67.30 Breakeven $162.70 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	2	—	—	$0.10		$108.70	—	—	1	0
Call · $240 Last $0.10 Breakeven $240.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $240 In the money Last $108.70 Breakeven $131.30 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
3	1	—	—	$0.09		—	—	—	—	0
Call · $250 Last $0.09 Breakeven $250.09 Implied vol — Delta — Gamma — Theta — Vega — Open interest 3 Model this call Put · $250 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put

About this data

Greeks, implied volatility, open interest and the last price come from the latest daily snapshot and are 15-minute delayed. Bid and ask are not included on this plan.

In-the-money strikes are tinted, deepening toward the money, and the bar beside each open-interest figure scales to the heaviest strike shown. The 25 strikes around the money are shown by default — switch to "All 34" for the wings. 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) 94 filings 94 filers Visit website Investor relations