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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)1,686,053

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

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

ITM/OTM for Dec 18, 2026View All Dates

Calls ITM	Calls OTM	Puts ITM	Puts OTM
673	1,384	607	785

ALNY Dec 18, 2026 Exp. - Volume by Strike

Puts

Calls

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

Puts

Calls

ALNY Dec 18, 2026 Exp. - Max Pain @ $220.00

Puts

Calls

ALNY Dec 18, 2026 Exp. - Option Chain

In the Money (ITM)

Calls

Strike	Price	Change	Vol	OI	Last	Contract Name
520 C	0	0%	0			ALNY261218C00520000
500 C	0	0%	0			ALNY261218C00500000
490 C	3.90	0%	2	2	07-06	ALNY261218C00490000
480 C	0	0%	0			ALNY261218C00480000
470 C	0	0%	0			ALNY261218C00470000
460 C	6.40	0%	2	1	07-09	ALNY261218C00460000
450 C	6.90	0%	2	1	06-09	ALNY261218C00450000
440 C	4.50	0%	3	3	06-22	ALNY261218C00440000
430 C	8.90	0%	2	1	06-09	ALNY261218C00430000
420 C	5.44	-37.47%	2	3	07-15	ALNY261218C00420000
410 C	15.10	+32.46%	4	4	07-08	ALNY261218C00410000
400 C	1.90	-84.99%	1	151	08-06	ALNY261218C00400000
390 C	0.85	-57.07%	1	59	07-31	ALNY261218C00390000
380 C	0.56	-94.72%	1	18	07-31	ALNY261218C00380000
370 C	1.21	-45.00%	1	5	08-03	ALNY261218C00370000
360 C	1.35	-85.64%	11	72	08-18	ALNY261218C00360000
350 C	1.73	+28.15%	58	58	08-18	ALNY261218C00350000
340 C	1.75	-89.26%	3	11	08-14	ALNY261218C00340000
330 C	4.60	+36.09%	3	207	08-19	ALNY261218C00330000
320 C	17.70	-8.29%	4	38	07-23	ALNY261218C00320000
310 C	3.11	-13.61%	4	22	08-11	ALNY261218C00310000
300 C	8.80	+72.55%	13	371	08-19	ALNY261218C00300000
290 C	10.90	+84.75%	203	210	08-19	ALNY261218C00290000
280 C	13.42	+78.93%	5	17	08-19	ALNY261218C00280000
270 C	16.46	+94.79%	2	16	08-19	ALNY261218C00270000
260 C	20.20	+68.33%	10	15	08-19	ALNY261218C00260000
250 C	24.08	+42.49%	16	28	08-19	ALNY261218C00250000
240 C	26.55	+28.88%	2	11	08-19	ALNY261218C00240000
230 C	31.00	+29.17%	1	60	08-19	ALNY261218C00230000
220 C	40.70	+30.87%	14	474	08-19	ALNY261218C00220000
210 C	43.62	+18.21%	4	13	08-19	ALNY261218C00210000
200 C	53.60	+48.23%	4	10	08-19	ALNY261218C00200000
195 C	43.50	+7.67%	1	1	08-14	ALNY261218C00195000
190 C	33.00	0%	1	1	07-30	ALNY261218C00190000
185 C	46.98	0%	3	3	08-11	ALNY261218C00185000
180 C	41.03	0%	159	157	07-31	ALNY261218C00180000
175 C	52.00	0%	1	1	07-30	ALNY261218C00175000
170 C	0	0%	0			ALNY261218C00170000
165 C	0	0%	0			ALNY261218C00165000
160 C	0	0%	0			ALNY261218C00160000
155 C	0	0%	0			ALNY261218C00155000
150 C	77.04	0%	1	1	08-10	ALNY261218C00150000
145 C	146.34	0%	10	10	07-28	ALNY261218C00145000
140 C	83.65	+9.50%	2	2	08-03	ALNY261218C00140000
135 C	0	0%	0			ALNY261218C00135000
130 C	0	0%	0			ALNY261218C00130000
125 C	0	0%	0			ALNY261218C00125000

Puts

Strike	Price	Change	Vol	OI	Last	Contract Name
520 P	0	0%	0			ALNY261218P00520000
500 P	0	0%	0			ALNY261218P00500000
490 P	0	0%	0			ALNY261218P00490000
480 P	0	0%	0			ALNY261218P00480000
470 P	0	0%	0			ALNY261218P00470000
460 P	0	0%	0			ALNY261218P00460000
450 P	0	0%	0			ALNY261218P00450000
440 P	0	0%	0			ALNY261218P00440000
430 P	0	0%	0			ALNY261218P00430000
420 P	0	0%	0			ALNY261218P00420000
410 P	0	0%	0			ALNY261218P00410000
400 P	193.62	+116.92%	1	1	07-30	ALNY261218P00400000
390 P	183.66	0%	1	0	07-30	ALNY261218P00390000
380 P	0	0%	0			ALNY261218P00380000
370 P	102.78	+125.15%	1	1	07-21	ALNY261218P00370000
360 P	0	0%	0			ALNY261218P00360000
350 P	0	0%	0			ALNY261218P00350000
340 P	136.60	+103.27%	8	9	07-30	ALNY261218P00340000
330 P	37.45	-10.26%	1	1	07-09	ALNY261218P00330000
320 P	54.00	+65.90%	1	4	07-16	ALNY261218P00320000
310 P	49.08	+157.64%	1	2	07-17	ALNY261218P00310000
300 P	73.78	-2.54%	1	205	08-06	ALNY261218P00300000
290 P	44.10	+16.05%	2	6	07-22	ALNY261218P00290000
280 P	78.40	+96.00%	1	10	07-31	ALNY261218P00280000
270 P	69.60	+0.72%	2	245	07-31	ALNY261218P00270000
260 P	43.90	-10.97%	1	13	08-13	ALNY261218P00260000
250 P	31.27	-13.14%	1	39	08-19	ALNY261218P00250000
240 P	23.39	-22.03%	1	53	08-19	ALNY261218P00240000
230 P	26.30	-13.77%	3	18	08-12	ALNY261218P00230000
220 P	15.20	-25.71%	2	15	08-19	ALNY261218P00220000
210 P	15.50	-6.06%	1	16	08-13	ALNY261218P00210000
200 P	10.30	-16.40%	202	204	08-19	ALNY261218P00200000
195 P	0	0%	0			ALNY261218P00195000
190 P	8.81	-16.10%	1	1	08-14	ALNY261218P00190000
185 P	9.60	-12.73%	3	436	08-11	ALNY261218P00185000
180 P	7.05	+0.71%	2	29	08-14	ALNY261218P00180000
175 P	8.20	0%	1	1	08-03	ALNY261218P00175000
170 P	6.65	-1.48%	18	28	08-10	ALNY261218P00170000
165 P	3.80	+79.25%	3	13	08-14	ALNY261218P00165000
160 P	3.70	+19.35%	7	11	08-17	ALNY261218P00160000
155 P	2.65	-64.67%	3	8	08-14	ALNY261218P00155000
150 P	3.80	-32.50%	3	15	08-03	ALNY261218P00150000
145 P	1.70	-43.71%	1	2	08-17	ALNY261218P00145000
140 P	1.75	+29.63%	3	5	08-14	ALNY261218P00140000
135 P	1.00	0%	1	1	08-18	ALNY261218P00135000
130 P	0	0%	0			ALNY261218P00130000
125 P	0	0%	0			ALNY261218P00125000