BIIB · Option chain

BIIB Option Chain

Every listed BIIB strike within 25% of spot, across the next 6 expirations — calls and puts side by side with last price, volume and open interest, plus the closing bid and ask.

Open interest and pricing as of the close on 2026-09-03. Recomputed every morning before the open.

Spot

$224.51

Call open interest

8,450

Put open interest

5,533

Put/call (volume)

0.45

620 contracts changed hands across these expirations — 429 calls against 191 puts. Calls outtraded puts 2.25 to one.

Sep 11, 20266 days

call OI 516 · put OI 289

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	38.00 / 41.60	—	—	185	—	0.00 / 1.15	—	3
—	33.00 / 36.60	—	—	190	—	0.00 / 1.35	—	1
—	28.00 / 31.70	—	—	195	—	0.00 / 1.45	—	4
—	23.20 / 26.70	—	9	200	—	0.00 / 1.95	—	85
—	20.80 / 24.20	—	63	202.5	—	0.00 / 2.20	—	2
—	18.10 / 21.80	—	57	205	—	0.00 / 1.95	—	56
—	15.70 / 19.40	—	1	207.5	—	0.00 / 2.60	—	9
—	13.50 / 17.00	—	64	210	—	0.00 / 2.60	—	19
—	11.00 / 14.70	—	2	212.5	0.65	0.00 / 2.05	1	14
—	8.80 / 12.50	—	14	215	1.00	0.00 / 2.80	13	44
—	6.50 / 10.40	—	8	217.5	1.50	0.00 / 3.60	42	7
5.80	4.70 / 8.70	3	24	220	—	0.05 / 4.10	—	11
—	3.00 / 7.00	—	18	222.5	—	0.60 / 4.70	—	30
3.40	1.55 / 4.10	1	144	225	—	1.80 / 5.70	—	—
2.55	0.25 / 4.60	13	6	227.5	5.75	4.10 / 6.20	1	3
—	0.05 / 4.00	—	64	230	—	5.50 / 8.70	—	—
—	0.00 / 2.80	—	11	232.5	11.40	7.10 / 10.80	1	1
1.30	0.00 / 2.45	1	23	235	—	9.30 / 13.00	—	—
0.97	0.00 / 2.70	1	—	237.5	—	11.60 / 15.20	—	—
—	0.15 / 2.65	—	5	240	—	14.00 / 17.50	—	—
—	0.00 / 2.30	—	1	245	—	18.70 / 22.30	—	—
—	0.00 / 1.10	—	1	250	—	23.60 / 27.20	—	—
—	0.00 / 2.15	—	1	280	—	53.60 / 57.20	—	—
A dash means the contract did not trade — not a price of zero.

Sep 18, 202613 days

call OI 5,280 · put OI 3,875

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	53.30 / 56.90	—	23	170	—	0.00 / 1.95	—	674
—	48.30 / 51.90	—	8	175	—	0.00 / 1.40	—	529
—	43.40 / 47.00	—	367	180	—	0.00 / 1.80	—	346
39.81	38.40 / 42.00	3	23	185	—	0.00 / 1.60	—	313
34.91	33.40 / 37.00	3	79	190	0.15	0.00 / 1.15	62	886
—	28.50 / 31.00	—	210	195	0.58	0.00 / 1.35	2	217
—	26.00 / 29.60	—	—	197.5	—	0.00 / 2.50	—	3
25.49	23.50 / 27.10	13	967	200	0.35	0.00 / 0.95	1	435
—	21.10 / 24.70	—	—	202.5	—	0.00 / 2.80	—	1
—	18.70 / 22.30	—	—	205	1.60	0.20 / 2.75	1	2
—	16.50 / 20.00	—	1	207.5	—	0.00 / 2.55	—	1
15.80	14.30 / 17.70	8	875	210	—	0.00 / 3.20	—	185
—	10.00 / 13.80	—	—	215	2.25	1.00 / 4.00	1	—
9.61	8.20 / 12.10	1	1	217.5	2.95	1.10 / 4.70	3	1
8.00	6.50 / 9.40	37	777	220	3.80	1.50 / 5.50	1	233
6.90	5.10 / 9.00	3	7	222.5	4.50	2.80 / 6.50	1	1
—	3.70 / 7.70	—	8	225	—	3.70 / 7.70	—	—
4.30	2.55 / 5.60	11	5	227.5	—	5.10 / 9.00	—	—
3.32	2.00 / 5.00	8	689	230	—	6.60 / 10.50	—	38
—	0.75 / 4.70	—	4	232.5	—	8.40 / 12.10	—	—
—	0.05 / 2.50	—	30	235	—	10.20 / 13.90	—	—
—	0.00 / 3.90	—	30	237.5	—	12.30 / 15.90	—	—
—	0.40 / 1.55	—	614	240	—	14.50 / 18.10	—	9
—	0.45 / 2.95	—	1	245	—	19.00 / 22.60	—	—
0.54	0.00 / 1.55	4	57	250	—	24.10 / 27.40	—	1
—	0.00 / 2.25	—	1	255	—	28.60 / 32.20	—	—
—	0.00 / 1.45	—	467	260	—	33.60 / 37.20	—	—
—	0.00 / 0.70	—	22	270	—	43.60 / 47.20	—	—
—	0.00 / 2.15	—	14	280	—	53.60 / 57.20	—	—
A dash means the contract did not trade — not a price of zero.

Sep 25, 202620 days

call OI 189 · put OI 15

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	43.50 / 47.10	—	1	180	—	0.00 / 2.40	—	5
—	28.90 / 32.50	—	1	195	—	0.00 / 3.00	—	1
—	24.20 / 27.80	—	4	200	—	0.00 / 3.10	—	—
—	19.60 / 23.30	—	1	205	1.25	0.00 / 3.10	1	7
—	15.60 / 19.00	—	1	210	2.30	1.55 / 2.55	2	1
—	11.80 / 15.20	—	104	215	3.20	1.30 / 4.90	1	—
—	7.90 / 11.90	—	10	220	—	2.65 / 6.70	—	1
—	5.00 / 9.00	—	3	225	7.04	4.80 / 8.80	1	—
4.30	3.50 / 6.80	1	30	230	—	7.70 / 11.50	—	—
3.35	1.00 / 5.30	1	4	235	—	11.20 / 14.90	—	—
2.27	0.50 / 4.30	1	20	240	—	15.10 / 18.80	—	—
—	0.00 / 3.20	—	5	250	—	24.00 / 27.60	—	—
—	0.00 / 2.80	—	1	255	—	28.80 / 32.40	—	—
—	0.00 / 2.60	—	3	260	—	33.60 / 37.20	—	—
—	0.00 / 2.45	—	1	265	—	38.50 / 42.70	—	—
A dash means the contract did not trade — not a price of zero.

Oct 02, 202627 days

call OI 37 · put OI 47

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	38.80 / 42.50	—	—	185	—	0.00 / 2.65	—	1
—	33.60 / 37.70	—	—	190	—	0.00 / 2.90	—	2
—	29.40 / 33.00	—	—	195	—	0.00 / 1.35	—	21
—	24.80 / 28.50	—	—	200	1.40	0.30 / 1.65	2	19
—	20.40 / 24.10	—	—	205	—	0.50 / 4.00	—	1
—	16.00 / 19.90	—	—	210	—	0.70 / 4.40	—	1
—	12.40 / 16.10	—	1	215	—	3.50 / 5.70	—	2
—	9.00 / 12.70	—	3	220	—	3.40 / 7.10	—	—
8.33	6.20 / 10.00	1	2	225	—	5.80 / 9.30	—	—
6.03	4.00 / 7.90	1	10	230	10.50	8.60 / 12.50	9	—
4.00	3.20 / 5.90	3	8	235	—	11.90 / 15.70	—	—
—	0.60 / 4.50	—	4	240	—	15.50 / 19.40	—	—
—	0.00 / 3.60	—	2	245	—	19.70 / 23.30	—	—
—	0.00 / 2.75	—	7	250	—	24.20 / 28.00	—	—
A dash means the contract did not trade — not a price of zero.

Oct 09, 202634 days

call OI 10 · put OI 0

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	1.50 / 5.30	—	10	240	—	16.20 / 20.00	—	—
2.66	0.70 / 4.10	1	—	245	—	20.20 / 24.00	—	—
A dash means the contract did not trade — not a price of zero.

Oct 16, 202641 days

call OI 2,418 · put OI 1,307

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	54.10 / 57.70	—	3	170	0.20	0.00 / 1.05	1	52
—	49.20 / 52.80	—	7	175	—	0.00 / 1.20	—	187
—	44.40 / 47.90	—	14	180	—	0.00 / 0.85	—	165
—	39.60 / 43.10	—	3	185	1.05	0.00 / 1.10	1	10
—	34.80 / 38.40	—	608	190	—	0.00 / 1.35	—	493
—	30.20 / 33.80	—	6	195	—	0.20 / 1.75	—	8
27.31	25.60 / 29.30	11	313	200	1.82	1.30 / 2.30	27	45
—	17.50 / 21.10	—	221	210	4.30	1.50 / 5.00	16	208
12.64	10.50 / 14.30	58	296	220	—	4.80 / 8.30	—	129
7.70	6.50 / 8.60	208	354	230	—	10.00 / 13.80	—	8
4.61	2.10 / 4.50	8	81	240	—	16.90 / 20.50	—	1
1.94	1.80 / 2.55	25	301	250	—	24.80 / 28.50	—	1
—	0.90 / 1.60	—	168	260	—	34.10 / 37.60	—	—
—	0.00 / 0.80	—	21	270	—	43.60 / 47.50	—	—
—	0.00 / 2.50	—	22	280	—	53.60 / 57.40	—	—
A dash means the contract did not trade — not a price of zero.

How to read this chain

Calls sit on the left, puts on the right, and every row is one strike. The highlighted row is the strike closest to spot. Open interest is the number of contracts still outstanding at that strike — positions that exist right now. Volume is how many traded on the session shown. Open interest builds slowly and marks where positioning has accumulated; volume spikes and marks where attention went today.

Strikes with no open interest and no trades on either side are omitted, and the ladder is trimmed to within 25% of spot — the far wings are almost entirely empty and say nothing about positioning.

More on BIIB

BIIB options score BIIB gamma walls BIIB max pain BIIB IV rank BIIB put/call ratio BIIB options flow

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Educational, not investment advice. Options involve risk. Open interest is reported with a one-session lag by OCC, so these levels describe positioning as of the last settled session, not live intraday flow.