Regeneron Pharmaceuticals (REGN) Options Chain

NASDAQ: REGNHealthcareBiotechnologyUSD

746.54+6.97 (+0.94%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

Expiration date

Expiration: Jan 15, 2027
Days to expiration: 96
Share price: $746.54
Put/call ratio (OI): 0.79
Put/call ratio (volume): 1.41
ATM implied volatility: 35.0%
Expected move: ±$133.89
Open interest (C / P): 4.13K / 3.25K

REGN options summary

The REGN options chain for the January 15, 2027 expiration lists 64 call and 51 put contracts, with 96 days until expiration. Open interest stands at 4,129 calls and 3,255 puts, a put/call ratio of 0.79, which is fairly balanced between calls and puts. At-the-money implied volatility near the $740.00 strike is 35.0%, which implies the market expects a move of about ±$133.89 (17.9%) in Regeneron Pharmaceuticals stock by expiration.

The most open interest sits at the $780.00 call (504 contracts) and the $780.00 put (606 contracts).

Summary generated from market data by MetaCap's automated system. Methodology

REGN options chain · January 15, 2027

REGN calls and puts by strike price. Shaded cells are in the money.
Calls							Puts
OI	Vol	IV	Last	Bid	Ask	Strike	Bid	Ask	Last	IV	Vol	OI
1	—	—	323.70	376.10	385.30	290.00	0.00	0.00	1.02	25.0%	3	0
1	1	98.8%	515.50	445.20	454.80	300.00	0.00	5.00	4.80	93.4%	1	24
1	—	—	304.60	356.70	365.30	310.00	0.00	4.80	3.50	89.7%	3	69
0	—	—	337.90	0.00	0.00	320.00	0.05	5.00	3.00	87.5%	4	27
—	—	—	—	—	—	330.00	0.00	6.80	2.27	89.2%	3	179
—	—	—	—	—	—	340.00	0.00	8.20	2.02	89.4%	2	9
2	2	167.2%	431.00	435.00	445.00	350.00	0.00	0.00	2.23	25.0%	1	0
1	1	223.5%	331.37	469.00	478.50	360.00	0.00	0.00	2.23	25.0%	1	0
1	—	111.8%	317.20	388.00	397.00	370.00	0.00	0.00	2.23	25.0%	2	0
—	—	—	—	—	—	380.00	0.00	4.90	2.43	71.0%	2	49
1	1	151.7%	418.60	398.00	407.00	390.00	0.00	4.90	2.40	68.6%	6	70
1	1	76.5%	350.00	347.00	356.40	400.00	0.00	4.90	6.72	66.2%	2	31
0	—	—	391.00	0.00	0.00	410.00	0.00	0.00	0.30	25.0%	2	0
1	1	105.2%	270.45	344.00	353.00	420.00	4.20	12.70	3.30	80.0%	84	60
0	1	—	368.00	0.00	0.00	430.00	0.00	7.00	3.00	63.6%	8	13
1	1	103.7%	250.00	327.00	337.00	440.00	0.00	6.90	2.70	61.1%	6	10
4	1	88.4%	336.00	309.00	319.00	450.00	0.00	7.00	4.20	59.0%	3	43
1	1	101.1%	223.30	310.00	320.00	460.00	3.00	10.00	14.70	65.1%	2	39
1	—	165.2%	238.20	361.30	369.60	470.00	0.00	0.00	17.50	12.5%	2	0
—	—	—	—	—	—	480.00	0.00	4.90	0.73	56.5%	1	32
1	2	156.8%	230.90	341.60	351.00	490.00	0.00	4.90	1.19	54.4%	3	10
6	1	56.6%	351.80	248.90	258.00	500.00	0.00	4.90	1.65	52.2%	1	67
12	13	148.5%	203.10	322.10	331.60	510.00	0.05	8.10	2.10	56.7%	1	28
0	2	—	287.23	0.00	0.00	520.00	0.05	8.20	2.50	54.6%	1	16
0	2	—	277.73	0.00	0.00	530.00	0.05	8.30	2.90	52.5%	2	7
0	3	—	275.50	0.00	0.00	540.00	0.00	0.00	3.00	12.5%	4	0
24	1	55.1%	195.90	202.40	209.60	550.00	0.05	8.40	3.60	48.3%	1	97
10	1	53.3%	195.86	192.90	200.00	560.00	0.45	8.90	3.75	46.9%	28	34
8	1	51.8%	226.47	183.50	190.70	570.00	0.90	8.70	5.85	44.4%	1	37
14	1	51.0%	167.60	173.30	182.00	580.00	0.05	9.20	6.10	43.0%	6	92
2	1	—	87.10	101.00	110.20	590.00	0.80	9.80	5.73	41.6%	1	41
18	1	48.4%	249.70	155.10	164.00	600.00	1.65	10.70	8.30	40.6%	2	177
14	1	47.7%	142.20	146.50	155.70	610.00	2.60	11.70	9.70	39.6%	4	39
0	1	—	207.60	0.00	0.00	620.00	4.90	12.40	11.20	38.2%	1	144
0	2	—	194.00	0.00	0.00	630.00	7.30	12.30	10.30	35.9%	5	53
47	15	43.1%	169.45	121.70	128.70	640.00	8.00	15.30	11.80	36.7%	2	70
29	1	43.5%	105.10	113.00	122.10	650.00	8.60	17.30	16.80	36.3%	1	49
27	1	42.6%	109.15	105.00	114.10	660.00	11.00	19.30	16.80	35.6%	5	34
28	1	41.3%	91.18	90.10	99.40	680.00	16.40	24.30	24.20	34.7%	3	106
210	1	40.2%	67.90	77.10	85.80	700.00	22.00	30.50	30.63	33.9%	2	189
205	1	38.9%	133.00	64.40	72.80	720.00	29.30	37.90	32.90	33.2%	2	178
80	2	37.5%	50.55	53.00	60.50	740.00	38.50	46.40	50.00	32.5%	2	88
REGN $746.54
99	2	36.9%	38.70	43.30	50.60	760.00	48.30	56.30	52.50	31.9%	1	227
504	1	36.3%	34.49	34.60	41.70	780.00	60.70	67.50	71.80	31.2%	103	606
288	1	34.4%	26.70	27.40	32.00	800.00	72.40	81.10	77.40	31.4%	1	131
285	51	34.2%	19.87	22.90	25.90	820.00	87.90	94.40	67.20	30.6%	2	22
332	1	36.0%	20.45	15.50	23.30	840.00	103.10	109.70	62.60	30.5%	1	46
166	11	36.4%	16.99	12.20	19.50	860.00	119.40	126.00	69.80	30.4%	1	8
321	1	36.8%	12.67	9.80	16.30	880.00	136.50	143.20	91.20	30.6%	2	2
333	7	34.5%	9.62	8.00	11.00	900.00	154.40	161.00	114.10	30.7%	2	2
148	1	37.8%	7.80	4.70	11.70	920.00	—	—	—	—	—	—
78	1	38.9%	2.85	1.65	10.40	940.00	—	—	—	—	—	—
193	1	40.3%	7.00	0.45	9.60	960.00	—	—	—	—	—	—
54	2	41.9%	6.00	0.90	9.10	980.00	—	—	—	—	—	—
248	2	43.5%	5.60	0.30	8.70	1,000.00	—	—	—	—	—	—
22	1	44.5%	3.41	0.10	8.70	1,010.00	—	—	—	—	—	—
67	1	44.5%	12.10	0.05	8.00	1,020.00	—	—	—	—	—	—
1	—	40.6%	11.00	0.00	4.90	1,030.00	—	—	—	—	—	—
40	2	41.5%	9.00	0.00	4.90	1,040.00	—	—	—	—	—	—
3	2	42.4%	6.72	0.00	4.90	1,050.00	—	—	—	—	—	—
36	1	43.3%	8.99	0.00	4.90	1,060.00	—	—	—	—	—	—
14	5	45.0%	7.20	0.00	4.90	1,080.00	—	—	—	—	—	—
138	70	46.6%	5.00	0.00	4.90	1,100.00	—	—	—	—	—	—
2	—	73.6%	21.95	20.10	30.00	1,120.00	—	—	—	—	—	—
0	1	12.5%	24.00	0.00	0.00	1,140.00	524.10	534.00	390.00	156.4%	1	0
2	—	70.2%	18.80	13.00	23.00	1,160.00	—	—	—	—	—	—
3	—	69.7%	14.32	12.00	20.00	1,180.00	—	—	—	—	—	—
0	3	12.5%	0.95	0.00	0.00	1,200.00	—	—	—	—	—	—

In-the-money callsIn-the-money puts. IV = implied volatility, OI = open interest (contracts). Each contract covers 100 shares. Quotes delayed at least 15 minutes.

Frequently asked questions

What is the REGN put/call ratio?

For the January 15, 2027 expiration, the REGN put/call ratio based on open interest is 0.79 (3,255 puts vs 4,129 calls), and 1.41 based on today's volume. A ratio above 1 means more puts than calls.

What is REGN's implied volatility?

At-the-money implied volatility for REGN options expiring January 15, 2027 is about 35.0%, an annualized estimate of how much the market expects Regeneron Pharmaceuticals stock to move.

How many REGN option expiration dates are there?

REGN has 16 listed expiration dates, from Oct 16, 2026 to Jan 19, 2029.

What does "in the money" mean?

A call is in the money when the strike price is below the current share price; a put is in the money when the strike is above it. In-the-money contracts have intrinsic value and are shaded in the table.