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ALNY
Alnylam Pharmaceuticals, Inc.
stock NASDAQ

At Close

Aug 20, 2026 3:59:57 PM EDT

229.30USD-5.484%(-13.31)1,686,514

212.80Bid 255.91Ask 43.11Spread

Pre-market

Aug 20, 2026 9:19:30 AM EDT

241.13USD-0.610%(-1.48)515

After-hours

Aug 20, 2026 4:50:30 PM EDT

229.30USD-0.002%(0.00)187,601

OverviewOption ChainHistoricalExchangesShortsMore

Expiration Dates

Aug 21, 2026 Sep 18, 2026 Oct 16, 2026 Dec 18, 2026 Jan 15, 2027 Mar 19, 2027 Dec 17, 2027

ITM/OTM for Sep 18, 2026View All Dates

Calls ITM	Calls OTM	Puts ITM	Puts OTM
1,386	5,465	2,931	1,195

ALNY Sep 18, 2026 Exp. - Volume by Strike

Puts

Calls

ALNY Sep 18, 2026 Exp. - Open Interest by Strike

Puts

Calls

ALNY Sep 18, 2026 Exp. - Max Pain @ $240.00

Puts

Calls

ALNY Sep 18, 2026 Exp. - Option Chain

In the Money (ITM)

Calls

Strike	Price	Change	Vol	OI	Last	Contract Name
540 C	3.10	+44.19%	1	2	03-26	ALNY260918C00540000
520 C	0.30	-91.43%	1	1	05-07	ALNY260918C00520000
510 C	3.30	0%	1	1	03-25	ALNY260918C00510000
500 C	7.00	-22.31%	3	3	02-11	ALNY260918C00500000
490 C	0	0%	0			ALNY260918C00490000
480 C	0	0%	0			ALNY260918C00480000
470 C	5.60	-55.91%	4	5	04-14	ALNY260918C00470000
460 C	5.80	+294.56%	1	6	07-09	ALNY260918C00460000
450 C	8.00	+17.65%	1	36	04-15	ALNY260918C00450000
440 C	9.10	-27.20%	2	5	04-15	ALNY260918C00440000
430 C	2.12	-79.42%	1	4	05-12	ALNY260918C00430000
420 C	1.00	-56.52%	1	23	07-14	ALNY260918C00420000
410 C	16.40	+518.87%	6	114	07-09	ALNY260918C00410000
400 C	0.20	-13.04%	4	36	07-31	ALNY260918C00400000
390 C	1.80	-55.00%	1	156	07-14	ALNY260918C00390000
380 C	1.54	-78.00%	51	89	07-20	ALNY260918C00380000
370 C	0.23	-86.86%	3	15	07-31	ALNY260918C00370000
360 C	0.55	+10.00%	1	36	08-04	ALNY260918C00360000
350 C	1.66	-5.14%	1	72	08-19	ALNY260918C00350000
340 C	6.25	+20.19%	3	337	07-27	ALNY260918C00340000
330 C	0.32	-96.44%	6	82	07-30	ALNY260918C00330000
320 C	0.44	+450.00%	10	241	08-19	ALNY260918C00320000
310 C	0.25	+150.00%	5	607	08-19	ALNY260918C00310000
300 C	1.96	+335.56%	1	279	08-19	ALNY260918C00300000
290 C	1.15	+61.97%	2	283	08-19	ALNY260918C00290000
280 C	2.02	+92.38%	23	127	08-19	ALNY260918C00280000
270 C	3.25	+400.00%	41	64	08-19	ALNY260918C00270000
260 C	5.71	+174.52%	18	190	08-19	ALNY260918C00260000
250 C	9.40	+120.66%	117	1,375	08-19	ALNY260918C00250000
240 C	13.92	+90.68%	43	509	08-19	ALNY260918C00240000
230 C	20.10	+74.78%	11	767	08-19	ALNY260918C00230000
220 C	27.75	+58.57%	18	409	08-19	ALNY260918C00220000
210 C	35.45	+53.80%	2	53	08-19	ALNY260918C00210000
200 C	39.06	+17.47%	204	884	08-19	ALNY260918C00200000
195 C	28.59	-14.32%	16	19	08-06	ALNY260918C00195000
190 C	49.20	+24.21%	1	16	08-19	ALNY260918C00190000
185 C	46.50	0%	1	1	08-05	ALNY260918C00185000
180 C	49.01	+64.02%	1	1	08-05	ALNY260918C00180000
175 C	0	0%	0			ALNY260918C00175000
170 C	150.50	0%	1	1	07-10	ALNY260918C00170000
165 C	0	0%	0			ALNY260918C00165000
160 C	0	0%	0			ALNY260918C00160000
155 C	66.50	+15.25%	3	2	08-11	ALNY260918C00155000
150 C	0	0%	0			ALNY260918C00150000

Puts

Strike	Price	Change	Vol	OI	Last	Contract Name
540 P	0	0%	0			ALNY260918P00540000
520 P	0	0%	0			ALNY260918P00520000
510 P	0	0%	0			ALNY260918P00510000
500 P	181.00	0%	2	0	07-07	ALNY260918P00500000
490 P	201.29	+18.06%	1	0	07-13	ALNY260918P00490000
480 P	191.26	+19.17%	1	1	07-13	ALNY260918P00480000
470 P	150.50	-7.95%	2	1	07-10	ALNY260918P00470000
460 P	140.50	-8.47%	1	0	07-10	ALNY260918P00460000
450 P	143.50	0%	1	0	07-01	ALNY260918P00450000
440 P	0	0%	0			ALNY260918P00440000
430 P	0	0%	0			ALNY260918P00430000
420 P	0	0%	0			ALNY260918P00420000
410 P	0	0%	0			ALNY260918P00410000
400 P	193.84	+98.61%	1	2	07-30	ALNY260918P00400000
390 P	183.84	+105.91%	2	1	07-30	ALNY260918P00390000
380 P	173.88	0%	2	0	07-30	ALNY260918P00380000
370 P	163.72	+121.24%	1	0	07-30	ALNY260918P00370000
360 P	153.57	+122.60%	4	4	07-30	ALNY260918P00360000
350 P	144.83	+112.05%	9	9	07-30	ALNY260918P00350000
340 P	112.52	-9.21%	100	197	08-14	ALNY260918P00340000
330 P	112.20	-1.50%	15	25	08-07	ALNY260918P00330000
320 P	114.40	+361.85%	13	50	07-30	ALNY260918P00320000
310 P	51.80	+290.94%	5	24	07-22	ALNY260918P00310000
300 P	74.23	-10.46%	3	350	08-13	ALNY260918P00300000
290 P	64.25	-12.64%	1	600	08-06	ALNY260918P00290000
280 P	44.00	-12.78%	2	29	08-19	ALNY260918P00280000
270 P	52.67	-20.62%	1	486	08-03	ALNY260918P00270000
260 P	38.10	-15.86%	1	151	08-12	ALNY260918P00260000
250 P	15.20	-47.59%	77	181	08-19	ALNY260918P00250000
240 P	16.10	-29.23%	246	265	08-18	ALNY260918P00240000
230 P	6.50	-39.53%	11	555	08-19	ALNY260918P00230000
220 P	3.90	-38.49%	26	140	08-19	ALNY260918P00220000
210 P	2.70	-20.59%	2	199	08-19	ALNY260918P00210000
200 P	1.10	-61.94%	12	458	08-19	ALNY260918P00200000
195 P	1.10	-24.14%	12	207	08-19	ALNY260918P00195000
190 P	1.00	-33.33%	1	88	08-18	ALNY260918P00190000
185 P	0.68	-69.51%	1	6	08-19	ALNY260918P00185000
180 P	0.46	-82.31%	5	29	08-19	ALNY260918P00180000
175 P	0.37	-26.00%	2	10	08-19	ALNY260918P00175000
170 P	0.85	-43.33%	4	13	08-13	ALNY260918P00170000
165 P	4.10	+70.83%	18	22	07-30	ALNY260918P00165000
160 P	1.55	-38.00%	1	3	08-03	ALNY260918P00160000
155 P	0.80	-52.94%	1	20	08-04	ALNY260918P00155000
150 P	0	0%	0			ALNY260918P00150000