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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)1,685,972

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 4:00:30 PM EDT

228.76USD-0.238%(-0.54)187,141

OverviewOption ChainHistoricalExchangesShortsMore

Expiration Dates

ITM/OTM for Aug 21, 2026View All Dates

Calls ITM	Calls OTM	Puts ITM	Puts OTM
527	4,980	1,499	1,457

Puts

Calls

Puts

Calls

Puts

Calls

In the Money (ITM)

Calls

Strike	Price	Change	Vol	OI	Last	Contract Name
450 C	0	0%	0			ALNY260821C00450000
440 C	0	0%	0			ALNY260821C00440000
430 C	0	0%	0			ALNY260821C00430000
420 C	7.00	+366.67%	64	63	07-09	ALNY260821C00420000
410 C	0.10	-80.00%	1	3	07-22	ALNY260821C00410000
400 C	0.01	-80.00%	2	200	08-11	ALNY260821C00400000
390 C	1.77	-50.14%	1	3	07-10	ALNY260821C00390000
380 C	1.00	-82.39%	1	2	07-13	ALNY260821C00380000
370 C	0.85	+2.41%	10	25	07-28	ALNY260821C00370000
360 C	0.01	-99.15%	6	26	07-30	ALNY260821C00360000
350 C	0.22	-12.00%	1	214	08-03	ALNY260821C00350000
340 C	0.10	+100.00%	4	425	08-12	ALNY260821C00340000
330 C	0.01	-75.00%	1	487	08-18	ALNY260821C00330000
320 C	0.05	-70.59%	5	74	08-11	ALNY260821C00320000
310 C	0.16	+60.00%	1	55	08-17	ALNY260821C00310000
300 C	0.10	+100.00%	3	1,151	08-19	ALNY260821C00300000
290 C	0.05	0.00%	2	94	08-18	ALNY260821C00290000
280 C	0.05	0.00%	15	301	08-19	ALNY260821C00280000
270 C	0.05	-89.36%	2	55	08-19	ALNY260821C00270000
260 C	0.25	-70.59%	25	238	08-19	ALNY260821C00260000
250 C	1.07	+205.71%	135	542	08-19	ALNY260821C00250000
240 C	4.65	+447.06%	123	524	08-19	ALNY260821C00240000
230 C	12.77	+219.25%	18	498	08-19	ALNY260821C00230000
220 C	22.70	+115.98%	10	235	08-19	ALNY260821C00220000
210 C	32.40	+96.36%	1	130	08-19	ALNY260821C00210000
200 C	38.20	+90.05%	51	133	08-19	ALNY260821C00200000
195 C	29.00	+11.54%	5	5	08-17	ALNY260821C00195000
190 C	34.33	-10.83%	1	1	08-17	ALNY260821C00190000
185 C	82.50	0%	1	1	07-24	ALNY260821C00185000
180 C	50.20	+12.30%	2	20	08-18	ALNY260821C00180000
175 C	34.00	-0.82%	1	1	07-31	ALNY260821C00175000
170 C	59.00	+68.57%	1	1	08-05	ALNY260821C00170000

Puts

Strike	Price	Change	Vol	OI	Last	Contract Name
450 P	130.50	0%	1	0	07-10	ALNY260821P00450000
440 P	120.50	0%	1	0	07-10	ALNY260821P00440000
430 P	0	0%	0			ALNY260821P00430000
420 P	113.50	0%	2	1	07-01	ALNY260821P00420000
410 P	0	0%	0			ALNY260821P00410000
400 P	0	0%	0			ALNY260821P00400000
390 P	0	0%	0			ALNY260821P00390000
380 P	0	0%	0			ALNY260821P00380000
370 P	154.50	-6.24%	1	4	08-06	ALNY260821P00370000
360 P	153.87	+63.69%	9	12	07-30	ALNY260821P00360000
350 P	144.89	+96.35%	15	20	07-30	ALNY260821P00350000
340 P	134.89	+307.52%	2	1	07-30	ALNY260821P00340000
330 P	123.92	+371.18%	4	2	07-30	ALNY260821P00330000
320 P	103.85	-0.75%	36	18	08-06	ALNY260821P00320000
310 P	97.50	+8.94%	1	4	08-03	ALNY260821P00310000
300 P	77.20	-2.28%	3	18	08-17	ALNY260821P00300000
290 P	60.90	-29.19%	1	147	08-05	ALNY260821P00290000
280 P	52.52	-16.14%	100	100	08-14	ALNY260821P00280000
270 P	56.38	-11.93%	2	54	08-07	ALNY260821P00270000
260 P	44.65	+44.97%	2	178	08-07	ALNY260821P00260000
250 P	24.90	-15.16%	1	722	08-17	ALNY260821P00250000
240 P	3.00	-84.54%	33	177	08-19	ALNY260821P00240000
230 P	0.84	-80.24%	8	41	08-19	ALNY260821P00230000
220 P	0.15	-83.33%	4	263	08-19	ALNY260821P00220000
210 P	0.27	+80.00%	10	204	08-19	ALNY260821P00210000
200 P	0.05	-85.71%	5	402	08-19	ALNY260821P00200000
195 P	0.20	-51.22%	3	80	08-14	ALNY260821P00195000
190 P	0.10	-75.00%	2	202	08-18	ALNY260821P00190000
185 P	1.27	+323.33%	1	92	08-14	ALNY260821P00185000
180 P	0.20	+300.00%	1	126	08-12	ALNY260821P00180000
175 P	0.26	-13.33%	1	20	08-14	ALNY260821P00175000
170 P	0.10	-9.09%	1	68	08-11	ALNY260821P00170000