Alnylam Pharmaceuticals (ALNY) Options Chain

NASDAQ: ALNYHealth CareBiotechnology: Pharmaceutical PreparationsUSD

232.68+8.15 (+3.63%)

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

Expiration date

Expiration: Jan 15, 2027
Days to expiration: 96
Share price: $232.68
Put/call ratio (OI): 0.46
Put/call ratio (volume): 3.62
ATM implied volatility: 53.2%
Expected move: ±$63.47
Open interest (C / P): 13.36K / 6.20K

ALNY options summary

The ALNY options chain for the January 15, 2027 expiration lists 55 call and 52 put contracts, with 96 days until expiration. Open interest stands at 13,364 calls and 6,204 puts, a put/call ratio of 0.46, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $230.00 strike is 53.2%, which implies the market expects a move of about ±$63.47 (27.3%) in Alnylam Pharmaceuticals stock by expiration.

The most open interest sits at the $280.00 call (3.67K contracts) and the $250.00 put (1.15K contracts).

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

ALNY options chain · January 15, 2027

ALNY 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
—	—	—	—	—	—	110.00	0.20	0.80	0.40	72.6%	1	9
5	1	244.9%	102.50	147.10	150.80	120.00	0.00	3.80	0.62	83.5%	3	61
3	1	—	338.48	328.00	332.50	125.00	0.00	2.80	2.36	74.1%	1	4
0	—	507.6%	247.50	197.50	202.50	130.00	0.00	2.90	3.90	70.6%	1	8
2	3	173.9%	128.55	117.50	122.50	140.00	0.00	4.10	1.35	67.9%	—	3
2	1	—	322.50	319.50	324.00	145.00	0.00	0.00	2.80	25.0%	4	0
1	1	208.4%	143.00	123.50	127.10	150.00	1.10	3.90	1.65	63.3%	2	30
12	10	401.9%	170.00	174.00	178.50	155.00	0.45	4.70	1.06	60.0%	549	333
—	—	—	—	—	—	160.00	0.90	5.10	2.40	58.7%	3	33
—	—	—	—	—	—	165.00	1.40	5.50	2.70	57.2%	3	24
50	7	165.4%	47.60	100.00	103.90	170.00	0.00	0.00	8.40	12.5%	—	0
4	—	158.3%	43.20	95.50	98.60	175.00	2.75	6.90	5.10	55.5%	1	60
0	14	—	64.00	0.00	0.00	180.00	3.60	7.80	6.85	54.9%	4	51
2	—	147.9%	40.30	87.00	90.00	185.00	4.60	8.80	9.30	54.3%	2	55
6	3	60.8%	83.60	51.00	54.80	190.00	5.80	9.90	7.90	53.8%	2	85
4	1	60.0%	49.70	47.30	51.20	195.00	7.10	11.30	7.10	53.4%	2	73
31	2	61.1%	35.70	44.80	48.10	200.00	9.10	11.40	10.45	51.9%	1	47
24	6	58.2%	48.50	37.30	41.20	210.00	12.20	16.10	18.24	52.5%	10	738
35	2	55.9%	24.00	31.40	34.10	220.00	16.10	20.20	22.00	51.6%	100	308
62	1	56.2%	19.00	26.00	30.00	230.00	21.20	23.80	26.80	50.2%	1	196
ALNY $232.68
164	1	56.5%	17.50	22.50	25.20	240.00	26.90	29.90	22.00	50.7%	1	144
630	1	53.1%	15.25	17.10	19.90	250.00	31.90	35.70	38.80	52.8%	4	1,150
40	9	53.6%	25.50	13.50	17.60	260.00	38.30	42.20	37.50	52.2%	1	251
133	1	53.0%	14.32	10.50	14.60	270.00	45.40	49.30	37.00	51.7%	1	68
3,674	1	52.5%	7.50	8.00	12.20	280.00	53.00	56.90	62.83	51.3%	1	251
347	2	52.1%	6.90	6.00	10.10	290.00	61.90	65.00	58.05	51.1%	1	99
513	1	51.8%	6.00	5.70	7.10	300.00	69.60	73.50	76.30	51.2%	1	548
144	67	52.9%	5.07	3.60	7.40	310.00	78.60	82.40	82.17	51.6%	2	108
64	1	51.1%	2.68	2.15	5.70	320.00	87.70	91.50	71.19	52.0%	4	194
97	1	52.3%	5.28	1.30	5.50	330.00	70.00	73.70	117.40	—	3	11
460	11	52.3%	4.80	0.65	4.80	340.00	78.10	81.80	126.60	—	1	301
139	6	54.8%	1.65	0.20	2.65	350.00	79.60	82.90	74.40	—	29	29
0	1	12.5%	2.05	0.00	0.00	360.00	87.80	91.00	81.60	—	47	46
1,103	1	57.1%	2.08	0.00	4.20	370.00	135.60	139.60	104.20	58.1%	3	6
0	1	25.0%	1.50	0.00	0.00	380.00	145.40	149.50	159.45	60.0%	100	100
0	3	25.0%	1.35	0.00	0.00	390.00	0.00	0.00	97.10	—	1	0
99	1	63.4%	1.65	0.00	4.00	400.00	132.40	136.10	195.70	—	100	100
67	10	71.7%	1.75	1.55	4.60	410.00	142.10	145.80	205.86	—	2	0
3,551	1	67.3%	2.80	0.00	3.90	420.00	151.90	155.60	215.82	—	2	3
357	2	69.3%	0.65	0.00	3.90	430.00	161.80	165.50	225.30	—	100	100
106	11	71.3%	0.70	0.00	3.90	440.00	149.00	152.00	124.00	—	6	14
333	1	74.0%	1.10	0.25	3.90	450.00	215.60	219.30	206.55	50.1%	5	287
9	1	71.1%	2.50	0.00	2.90	460.00	72.00	76.40	72.10	—	—	1
28	3	76.4%	0.55	0.00	3.80	470.00	235.60	239.40	225.30	54.8%	10	75
10	10	70.6%	0.56	0.00	2.10	480.00	245.60	249.30	259.95	54.4%	3	0
20	15	72.2%	0.21	0.00	2.10	490.00	255.60	259.40	258.48	57.6%	6	75
271	10	72.3%	0.25	0.00	1.85	500.00	265.60	269.30	279.92	56.9%	3	75
40	8	75.5%	0.35	0.00	1.90	520.00	285.60	289.30	293.55	59.5%	5	50
23	14	81.7%	1.75	0.00	2.50	540.00	305.60	309.40	308.52	63.9%	11	0
0	36	25.0%	5.80	0.00	0.00	560.00	—	—	—	—	—	—
15	4	92.8%	1.75	0.00	3.70	580.00	0.00	0.00	271.50	—	—	0
165	11	91.7%	6.50	0.00	2.90	600.00	0.00	0.00	289.50	—	3	0
30	3	93.1%	6.00	0.00	2.70	620.00	—	—	—	—	—	—
84	6	100.3%	5.00	0.00	3.70	640.00	—	—	—	—	—	—
157	2	102.6%	4.00	0.00	3.70	660.00	335.50	340.50	290.00	—	—	0
141	3	100.7%	3.30	0.00	2.85	680.00	—	—	—	—	—	—
105	3	107.0%	2.45	0.00	3.70	700.00	—	—	—	—	—	—
2	1	103.7%	1.90	0.00	2.65	720.00	—	—	—	—	—	—

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 ALNY put/call ratio?

For the January 15, 2027 expiration, the ALNY put/call ratio based on open interest is 0.46 (6,204 puts vs 13,364 calls), and 3.62 based on today's volume. A ratio above 1 means more puts than calls.

What is ALNY's implied volatility?

At-the-money implied volatility for ALNY options expiring January 15, 2027 is about 53.2%, an annualized estimate of how much the market expects Alnylam Pharmaceuticals stock to move.

How many ALNY option expiration dates are there?

ALNY has 8 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.