BMRN · Daily open interest

OI update signal: Not checked today MSFT / AAPL · Checked Oct 23, 09:56 EDT

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AADX,AAMI,AAP,ABAT,ABCB,ABEO,ABG,ABM,ABOS,ABSI,ABTC,ABUS,ABVC,ACB,ACET,ACH,ACHC,ACLS,ACMR,ACNB,ACOG,ACRS,ACTG,ADIG,ADTN,ADUR,ADUS,AER,AESI,AEXA,AFCG,AGEN,AGI,AGIO,AGL,AGNT,AGYS,AHRT,AIFC,AIFU,AIP,AIRJ,AIRO,AIRS,AKBA,ALC,ALDX,ALEC,ALGT,ALH,ALKS,ALKT,ALLO,ALLT,ALMS,ALNY,ALT,ALTI,ALTO,AMAL,AMBA,AMBQ,AMCX,AMPG,AMPL,AMPY,AMR,AMRC,AMRZ,AMTM,AMTX,ANAB,ANGI,ANGO,ANGX,ANIK,ANIP,ANIX,ANNX,ANRO,ANVS,AOSL,APEI,APLE,APOG,ARAY,ARCO,ARDT,ARDX,AREC,ARIS,ARLO,AROC,AROW,ARQ,ARTV,ARX,ARXS,ASAN,ASC,ASLE,ASMB,ASO,ASPN,ASTE,ASTH,ASTI,ASTL,ASUR,ASYS,ATEC,ATEN,ATLO,ATNI,ATRC,ATRO,AU,AUDC,AUGO,AUPH,AVAH,AVBC,AVPT,AVR,AWI,AWR,AWRE,AXGN,AXSM,AYA,AZ,BANC,BAND,BANF,BBD,BBVA,BCPC,BCSF,BKKT,BLZE,BMI,BMO,BMRC,BNS,BSBR,BUSE,CENN,COLD,CUE,DDD,DOX,DRTS,EZPW,FAC,FATE,FBIO,FBNC,FCBC,FDMT,FDXF,FELE,FER,FERG,FFBC,FHTX,FIRY,FISI,FLD,FLL,FLNA,FLNG,FLOC,FLUT,FLWS,FLY,FMAO,FMBH,FMNB,FNLC,FORM,FORR,FOSL,FPH,FRHC,FSBC,FSTR,FSUN,FSV,FTRE,FWDI,FWRG,GDYN,GFI,GH,GLBS,GLOO,GPI,GPRE,GRBK,GRDN,GSBC,GSIT,GTN,HAFN,HAPN,HASI,HAWK,HBM,HBNC,HBT,HCSG,HDB,HDSN,HE,HEI,HELP,HESM,HHH,HITI,HLF,HMY,HNGE,HNRG,HNST,HONA,HOS,HPK,HPP,HRI,HROW,HRZN,HSBC,HTFL,HTGC,HTT,HUBG,HUCK,HUMA,HUN,HY,IA,IART,ICHR,ICL,ICLR,IDYA,IESC,IGIC,IIPR,IMMX,IMNM,IMPP,IMTX,IMUX,IMVT,IMXI,INBK,INBX,ING,INGN,INIO,INMB,INMD,INOD,INR,INSE,INSM,INSP,INV,INVE,INVX,IOND,IONS,IPWR,IRLA,IRMD,IRTC,IRWD,IVR,IVVD,LFWD,MT,NTLA,PI,RAIL,RCEL,RCUS,SBC,SEV,SPRY,SRCE,THFF,TKNO,TRAX,TXG

Saved stock price: $55.33 · Expirations before Oct 23, 2026 hidden automatically.

ITM In the money Unshaded: out of the money ATM Strike equals stock price Based on the saved stock price

326 contracts / 7 expirationsClick OI for history

Nov 20, 2026EXPIRATION36 contracts / 18 strikes

SAVED STOCK PRICE$55.33Nearest ATM strike $55.00

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BMRN option chain expiring 2026-11-20, open interest on 2026-10-23 compared with 2026-10-21
Calls				Strike	Puts
Prev OI	Open interest	Change	IV	Strike	Prev OI	Open interest	Change	IV
0	0In the money	0New	78.82%	42.50	0	0	0New	96.20%
1	1In the money	0	67.22%	45.00	7	7	0	82.09%
0	0In the money	0New	56.94%	47.50	9	9	0	49.58%
0	0In the money	0New	49.37%	50.00	107	107	0	39.41%
0	0In the money	0New	45.98%	52.50	34	35	+1	33.14%
1,083	1,086In the money	+3	51.07%	55.00NEAREST ATM	127	127	0	37.07%
STOCK PRICE $55.33
117	118	+1	45.91%	57.50	32	32In the money	0	19.93%
355	540	+185	41.94%	60.00	341	373In the money	+32	0.00%
657	692	+35	39.82%	62.50	50	50In the money	0	0.00%
57	62	+5	42.16%	65.00	21	21In the money	0	0.00%
38	39	+1	57.40%	67.50	0	0In the money	0New	0.00%
420	420	0	45.74%	70.00	0	0In the money	0New	0.00%
11	10	-1	89.24%	72.50	0	0In the money	0New	0.00%
12	12	0	72.59%	75.00	0	0In the money	0New	0.00%
31	31	0	98.55%	80.00	0	0In the money	0New	0.00%
5	5	0	120.35%	85.00	0	0In the money	0New	0.00%
0	0	0New	131.04%	90.00	0	0In the money	0New	0.00%
0	0	0New	140.88%	95.00	0	0In the money	0New	0.00%

Dec 18, 2026EXPIRATION34 contracts / 17 strikes

SAVED STOCK PRICE$55.33Nearest ATM strike $55.00

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BMRN option chain expiring 2026-12-18, open interest on 2026-10-23 compared with 2026-10-21
Calls				Strike	Puts
Prev OI	Open interest	Change	IV	Strike	Prev OI	Open interest	Change	IV
0	0In the money	0New	77.48%	32.50	0	0	0New	115.15%
0	0In the money	0New	66.98%	35.00	0	0	0New	102.49%
0	0In the money	0New	69.72%	37.50	0	0	0New	91.26%
0	0In the money	0New	63.24%	40.00	0	0	0New	80.53%
0	0In the money	0New	57.77%	42.50	0	0	0New	70.72%
0	0In the money	0New	51.54%	45.00	0	0	0New	47.82%
0	0In the money	0New	47.42%	47.50	0	0	0New	52.72%
0	0In the money	0New	42.50%	50.00	0	0	0New	36.62%
0	0In the money	0New	41.70%	52.50	3	3	0	37.62%
7	7In the money	0	39.90%	55.00NEAREST ATM	0	0	0New	32.75%
STOCK PRICE $55.33
33	33	0	35.52%	57.50	6	6In the money	0	34.19%
310	310	0	33.02%	60.00	300	300In the money	0	29.14%
3	3	0	35.44%	62.50	0	0In the money	0New	29.79%
96	96	0	40.00%	65.00	0	0In the money	0New	26.18%
0	0	0New	45.00%	70.00	0	0In the money	0New	0.00%
4	4	0	68.37%	75.00	0	0In the money	0New	0.00%
0	0	0New	77.19%	80.00	0	0In the money	0New	0.00%

Jan 15, 2027EXPIRATION64 contracts / 32 strikes

SAVED STOCK PRICE$55.33Nearest ATM strike $55.00

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BMRN option chain expiring 2027-01-15, open interest on 2026-10-23 compared with 2026-10-21
Calls				Strike	Puts
Prev OI	Open interest	Change	IV	Strike	Prev OI	Open interest	Change	IV
6	6In the money	0	83.16%	27.50	15	15	0	96.23%
41	41In the money	0	68.89%	30.00	11	11	0	89.88%
6	6In the money	0	83.47%	32.50	1	1	0	92.03%
51	51In the money	0	77.50%	35.00	6	6	0	79.39%
7	7In the money	0	72.44%	37.50	5	5	0	67.69%
41	41In the money	0	63.92%	40.00	44	44	0	54.33%
0	0In the money	0New	51.87%	42.50	86	86	0	57.95%
172	172In the money	0	54.75%	45.00	399	399	0	51.29%
7	7In the money	0	42.71%	47.50	267	267	0	45.76%
213	213In the money	0	43.47%	50.00	1,099	1,094	-5	33.77%
179	179In the money	0	40.29%	52.50	203	203	0	34.36%
902	902In the money	0	38.30%	55.00NEAREST ATM	489	489	0	26.40%
STOCK PRICE $55.33
959	951	-8	36.09%	57.50	341	341In the money	0	25.02%
1,646	1,647	+1	30.36%	60.00	1,430	1,430In the money	0	26.68%
710	710	0	35.57%	62.50	165	165In the money	0	0.00%
318	318	0	38.58%	65.00	253	253In the money	0	0.00%
311	311	0	42.23%	67.50	113	113In the money	0	0.00%
648	648	0	44.16%	70.00	199	199In the money	0	0.00%
774	774	0	40.17%	72.50	18	18In the money	0	0.00%
1,312	1,312	0	41.59%	75.00	12	12In the money	0	0.00%
538	538	0	44.33%	77.50	0	0In the money	0New	0.00%
495	495	0	47.52%	80.00	0	0In the money	0New	0.00%
241	241	0	65.64%	82.50	0	0In the money	0New	0.00%
479	479	0	68.98%	85.00	0	0In the money	0New	0.00%
64	64	0	71.73%	87.50	0	0In the money	0New	0.00%
339	339	0	50.10%	90.00	0	0In the money	0New	0.00%
137	137	0	76.28%	92.50	0	0In the money	0New	0.00%
46	46	0	79.06%	95.00	0	0In the money	0New	0.00%
344	344	0	58.88%	100.00	0	0In the money	0New	0.00%
32	32	0	87.09%	105.00	0	0In the money	0New	0.00%
5	5	0	91.06%	110.00	0	0In the money	0New	0.00%
291	291	0	92.90%	115.00	0	0In the money	0New	0.00%

Apr 16, 2027EXPIRATION44 contracts / 22 strikes

SAVED STOCK PRICE$55.33Nearest ATM strike $55.00

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BMRN option chain expiring 2027-04-16, open interest on 2026-10-23 compared with 2026-10-21
Calls				Strike	Puts
Prev OI	Open interest	Change	IV	Strike	Prev OI	Open interest	Change	IV
0	0In the money	0New	48.93%	35.00	0	0	0New	62.08%
0	0In the money	0New	51.19%	37.50	0	0	0New	56.22%
0	0In the money	0New	44.17%	40.00	0	0	0New	51.19%
0	0In the money	0New	42.77%	42.50	38	38	0	46.71%
0	0In the money	0New	40.43%	45.00	12	12	0	37.12%
0	0In the money	0New	38.76%	47.50	5	10	+5	39.01%
2	2In the money	0	38.95%	50.00	19	19	0	31.34%
0	0In the money	0New	37.89%	52.50	0	0	0New	33.92%
324	324In the money	0	36.82%	55.00NEAREST ATM	27	27	0	34.37%
STOCK PRICE $55.33
300	300	0	37.00%	57.50	302	302In the money	0	35.46%
9	9	0	37.42%	60.00	3	3In the money	0	33.13%
16	16	0	36.86%	62.50	2	2In the money	0	32.12%
320	320	0	35.30%	65.00	309	309In the money	0	28.82%
53	54	+1	33.10%	67.50	0	0In the money	0New	23.86%
17	19	+2	38.15%	70.00	0	14In the money	+14New	0.00%
12	12	0	33.53%	72.50	0	0In the money	0New	0.00%
15	16	+1	34.22%	75.00	1	1In the money	0	0.00%
2	13	+11	43.10%	80.00	0	0In the money	0New	0.00%
74	74	0	38.47%	85.00	0	0In the money	0New	0.00%
1,001	1,001	0	40.99%	90.00	0	0In the money	0New	0.00%
0	0	0New	45.56%	95.00	0	0In the money	0New	0.00%
1,010	1,010	0	48.90%	100.00	0	0In the money	0New	0.00%

Jan 21, 2028EXPIRATION48 contracts / 24 strikes

SAVED STOCK PRICE$55.33Nearest ATM strike $55.00

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BMRN option chain expiring 2028-01-21, open interest on 2026-10-23 compared with 2026-10-21
Calls				Strike	Puts
Prev OI	Open interest	Change	IV	Strike	Prev OI	Open interest	Change	IV
0	0In the money	0New	45.47%	27.50	0	0	0New	69.84%
0	0In the money	0New	44.88%	30.00	0	0	0New	63.35%
0	0In the money	0New	43.52%	32.50	2	2	0	57.40%
0	0In the money	0New	42.23%	35.00	2	2	0	52.10%
0	0In the money	0New	40.94%	37.50	1	1	0	36.99%
0	0In the money	0New	39.25%	40.00	1	1	0	42.09%
0	30In the money	+30New	42.08%	42.50	2	2	0	37.47%
0	0In the money	0New	38.01%	45.00	15	20	+5	31.06%
0	0In the money	0New	38.80%	47.50	17	15	-2	31.57%
2	2In the money	0	38.68%	50.00	10	10	0	35.39%
0	0In the money	0New	37.64%	52.50	0	0	0New	36.05%
0	0In the money	0New	36.90%	55.00NEAREST ATM	13	13	0	34.38%
STOCK PRICE $55.33
0	0	0New	36.20%	57.50	17	17In the money	0	34.60%
2	2	0	34.93%	60.00	0	0In the money	0New	34.73%
0	0	0New	35.74%	62.50	0	0In the money	0New	33.72%
3	3	0	35.37%	65.00	0	0In the money	0New	33.49%
33	22	-11	35.28%	67.50	0	0In the money	0New	32.50%
362	347	-15	34.87%	70.00	0	0In the money	0New	31.54%
36	34	-2	34.13%	72.50	0	0In the money	0New	31.19%
237	240	+3	31.56%	75.00	35	35In the money	0	29.87%
56	56	0	33.57%	80.00	0	0In the money	0New	0.00%
0	0	0New	35.74%	85.00	0	0In the money	0New	0.00%
0	0	0New	38.83%	90.00	0	0In the money	0New	0.00%
1	1	0	35.42%	95.00	0	0In the money	0New	0.00%

Jun 16, 2028EXPIRATION52 contracts / 26 strikes

SAVED STOCK PRICE$55.33Nearest ATM strike $55.00

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BMRN option chain expiring 2028-06-16, open interest on 2026-10-23 compared with 2026-10-21
Calls				Strike	Puts
Prev OI	Open interest	Change	IV	Strike	Prev OI	Open interest	Change	IV
0	0In the money	0New	43.50%	27.50	2	2	0	50.10%
0	0In the money	0New	43.02%	30.00	0	0	0New	56.26%
4	4In the money	0	41.91%	32.50	0	0	0New	51.27%
10	10In the money	0	40.42%	35.00	1	1	0	46.46%
0	0In the money	0New	40.44%	37.50	0	0	0New	41.98%
90	90In the money	0	41.40%	40.00	0	0	0New	37.75%
1	1In the money	0	38.91%	42.50	3	3	0	36.38%
5	5In the money	0	38.89%	45.00	27	27	0	36.10%
0	0In the money	0New	38.43%	47.50	40	42	+2	32.85%
16	16In the money	0	37.20%	50.00	55	51	-4	35.29%
2	2In the money	0	36.13%	52.50	19	19	0	35.77%
9	9In the money	0	36.74%	55.00NEAREST ATM	25	25	0	34.83%
STOCK PRICE $55.33
2	2	0	36.42%	57.50	96	96In the money	0	32.05%
14	14	0	35.44%	60.00	95	95In the money	0	33.35%
402	401	-1	35.11%	62.50	72	72In the money	0	31.08%
42	42	0	35.40%	65.00	19	19In the money	0	33.27%
386	386	0	34.54%	67.50	1	1In the money	0	33.61%
2,191	2,182	-9	32.91%	70.00	4	4In the money	0	32.32%
54	61	+7	31.16%	72.50	0	0In the money	0New	31.76%
1,823	1,818	-5	31.16%	75.00	0	0In the money	0New	31.35%
50	53	+3	31.13%	77.50	0	0In the money	0New	30.11%
1,162	1,156	-6	30.27%	80.00	80	80In the money	0	0.00%
155	155	0	31.59%	85.00	0	0In the money	0New	0.00%
10	15	+5	32.77%	90.00	0	0In the money	0New	0.00%
6	10	+4	35.26%	95.00	0	0In the money	0New	0.00%
20	20	0	37.55%	100.00	0	0In the money	0New	0.00%

Jan 19, 2029EXPIRATION48 contracts / 24 strikes

SAVED STOCK PRICE$55.33Nearest ATM strike $55.00

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BMRN option chain expiring 2029-01-19, open interest on 2026-10-23 compared with 2026-10-21
Calls				Strike	Puts
Prev OI	Open interest	Change	IV	Strike	Prev OI	Open interest	Change	IV
0	0In the money	0New	42.92%	27.50	0	0	0New	54.46%
0	0In the money	0New	42.50%	30.00	0	0	0New	49.59%
0	0In the money	0New	41.22%	32.50	0	0	0New	45.30%
10	10In the money	0	40.71%	35.00	0	0	0New	41.16%
0	0In the money	0New	38.37%	37.50	0	0	0New	37.30%
17	17In the money	0	38.69%	40.00	0	0	0New	38.20%
0	0In the money	0New	37.36%	42.50	0	0	0New	36.07%
0	0In the money	0New	36.97%	45.00	4	4	0	40.15%
0	0In the money	0New	36.90%	47.50	0	0	0New	35.14%
0	0In the money	0New	36.90%	50.00	11	11	0	34.57%
0	0In the money	0New	35.73%	52.50	0	0	0New	34.06%
0	0In the money	0New	34.74%	55.00NEAREST ATM	6	6	0	34.09%
STOCK PRICE $55.33
3	3	0	34.06%	57.50	1	1In the money	0	33.79%
0	0	0New	33.99%	60.00	3	3In the money	0	33.19%
1	1	0	33.70%	62.50	0	0In the money	0New	33.10%
3	3	0	33.22%	65.00	0	0In the money	0New	32.69%
0	0	0New	32.54%	67.50	0	0In the money	0New	32.79%
0	120	+120New	33.21%	70.00	0	0In the money	0New	31.70%
1	1	0	32.18%	72.50	0	0In the money	0New	32.05%
5	5	0	32.51%	75.00	0	0In the money	0New	32.11%
22	22	0	30.18%	80.00	0	0In the money	0New	30.88%
1	1	0	31.25%	85.00	0	0In the money	0New	0.00%
14	14	0	28.06%	90.00	0	0In the money	0New	35.11%
0	0	0New	31.04%	95.00	0	0In the money	0New	0.00%

Click an OI number to view that contract's history. Click an expiration to show or hide its contracts. Unobserved daily OI is treated as zero; an empty call/put side means no contract at that strike.

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