CORT · Daily open interest

OI update signal: Not confirmed 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: $108.25 · 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

464 contracts / 6 expirationsClick OI for history

Nov 20, 2026EXPIRATION100 contracts / 50 strikes

SAVED STOCK PRICE$108.25Nearest ATM strike $110.00

Jump to ATM

CORT option chain expiring 2026-11-20, open interest on 2026-10-23 compared with 2026-10-20
Calls				Strike	Puts
Prev OI	Open interest	Change	IV	Strike	Prev OI	Open interest	Change	IV
0	0In the money	0New	249.84%	17.50	0	0	0New	408.62%
0	0In the money	0New	225.30%	20.00	0	0	0New	377.98%
0	0In the money	0New	228.90%	22.50	0	0	0New	351.53%
0	0In the money	0New	210.22%	25.00	1	1	0	328.28%
0	0In the money	0New	208.90%	27.50	1	1	0	307.54%
0	0In the money	0New	177.18%	30.00	0	0	0New	288.83%
0	0In the money	0New	0.00%	32.50	0	0	0New	271.79%
5	5In the money	0	166.34%	35.00	0	0	0New	256.14%
0	0In the money	0New	131.74%	37.50	1	1	0	241.66%
0	0In the money	0New	112.35%	40.00	0	0	0New	228.20%
3	3In the money	0	131.08%	42.50	3	3	0	215.60%
6	6In the money	0	120.15%	45.00	1	1	0	203.77%
5	5In the money	0	123.66%	47.50	1	1	0	146.30%
148	148In the money	0	0.00%	50.00	0	0	0New	182.04%
0	0In the money	0New	114.57%	52.50	0	0	0New	171.99%
134	134In the money	0	106.37%	55.00	0	0	0New	162.41%
7	7In the money	0	88.59%	57.50	0	0	0New	153.25%
11	11In the money	0	90.97%	60.00	3	3	0	142.03%
2	2In the money	0	83.69%	62.50	1	1	0	136.78%
16	16In the money	0	88.24%	65.00	0	0	0New	128.62%
0	0In the money	0New	91.63%	67.50	3	3	0	121.41%
23	23In the money	0	87.48%	70.00	0	0	0New	114.39%
3	3In the money	0	83.17%	72.50	9	9	0	107.52%
246	246In the money	0	76.76%	75.00	58	58	0	96.08%
5	5In the money	0	77.46%	77.50	12	12	0	94.73%
14	14In the money	0	73.92%	80.00	203	203	0	88.70%
21	21In the money	0	72.37%	82.50	4	4	0	83.15%
1,000	1,000In the money	0	70.93%	85.00	8	8	0	73.15%
50	50In the money	0	71.04%	87.50	2	2	0	72.26%
72	72In the money	0	69.88%	90.00	11	11	0	65.75%
3	3In the money	0	70.22%	92.50	4	4	0	64.85%
93	93In the money	0	70.95%	95.00	182	183	+1	64.88%
4	4In the money	0	73.40%	97.50	16	16	0	64.45%
390	390In the money	0	72.60%	100.00	491	491	0	74.08%
56	56In the money	0	66.56%	105.00	50	50	0	64.17%
STOCK PRICE $108.25
148	155	+7	65.32%	110.00NEAREST ATM	422	422In the money	0	62.20%
256	256	0	66.82%	115.00	50	50In the money	0	63.16%
588	591	+3	65.81%	120.00	56	56In the money	0	59.05%
85	85	0	72.94%	125.00	43	43In the money	0	61.72%
122	132	+10	66.51%	130.00	8	8In the money	0	61.30%
193	193	0	63.65%	135.00	10	10In the money	0	58.88%
489	489	0	69.42%	140.00	0	0In the money	0New	57.65%
102	103	+1	68.28%	145.00	0	0In the money	0New	55.18%
25	25	0	64.70%	150.00	0	0In the money	0New	64.75%
57	57	0	90.92%	155.00	0	0In the money	0New	0.00%
45	45	0	98.95%	160.00	0	0In the money	0New	0.00%
0	0	0New	102.97%	165.00	0	0In the money	0New	0.00%
104	104	0	107.14%	170.00	0	0In the money	0New	0.00%
5	5	0	111.55%	175.00	0	0In the money	0New	0.00%
5	5	0	88.30%	180.00	0	0In the money	0New	0.00%

Dec 18, 2026EXPIRATION46 contracts / 23 strikes

SAVED STOCK PRICE$108.25Nearest ATM strike $110.00

Jump to ATM

CORT option chain expiring 2026-12-18, open interest on 2026-10-23 compared with 2026-10-20
Calls				Strike	Puts
Prev OI	Open interest	Change	IV	Strike	Prev OI	Open interest	Change	IV
0	0In the money	0New	85.94%	65.00	26	26	0	98.20%
0	0In the money	0New	86.17%	70.00	62	62	0	87.01%
0	0In the money	0New	81.31%	75.00	5	5	0	78.64%
0	0In the money	0New	81.58%	80.00	0	1	+1New	82.58%
0	0In the money	0New	81.02%	85.00	20	27	+7	77.61%
0	0In the money	0New	80.20%	90.00	41	41	0	77.90%
0	0In the money	0New	80.16%	95.00	0	0	0New	77.60%
0	0In the money	0New	79.70%	100.00	14	15	+1	78.45%
0	0In the money	0New	79.22%	105.00	1	1	0	78.17%
STOCK PRICE $108.25
0	0	0New	77.90%	110.00NEAREST ATM	7	17In the money	+10	77.57%
11	20	+9	77.29%	115.00	7	7In the money	0	76.74%
95	107	+12	75.99%	120.00	6	6In the money	0	75.48%
0	0	0New	73.72%	125.00	0	0In the money	0New	74.46%
0	0	0New	71.06%	130.00	0	0In the money	0New	72.14%
0	0	0New	71.62%	135.00	0	0In the money	0New	70.88%
7	7	0	69.74%	140.00	0	0In the money	0New	69.52%
3	3	0	69.46%	145.00	0	0In the money	0New	69.69%
28	40	+12	68.37%	150.00	0	0In the money	0New	66.04%
49	53	+4	69.30%	155.00	0	0In the money	0New	64.05%
12	16	+4	72.91%	160.00	0	0In the money	0New	64.33%
4	13	+9	77.22%	165.00	0	0In the money	0New	59.95%
9	9	0	81.68%	170.00	0	0In the money	0New	0.00%
4	23	+19	83.38%	175.00	0	0In the money	0New	0.00%

Jan 15, 2027EXPIRATION100 contracts / 50 strikes

SAVED STOCK PRICE$108.25Nearest ATM strike $110.00

Jump to ATM

CORT option chain expiring 2027-01-15, open interest on 2026-10-23 compared with 2026-10-20
Calls				Strike	Puts
Prev OI	Open interest	Change	IV	Strike	Prev OI	Open interest	Change	IV
0	0In the money	0New	0.00%	17.50	11	11	0	239.84%
20	20In the money	0	0.00%	20.00	61	61	0	221.91%
287	287In the money	0	111.75%	23.00	14	14	0	226.62%
15	15In the money	0	0.00%	25.00	15	15	0	140.48%
2	2In the money	0	93.53%	28.00	1	1	0	179.32%
89	89In the money	0	0.00%	30.00	10	10	0	170.61%
4	4In the money	0	98.71%	33.00	7	7	0	159.48%
265	265In the money	0	0.00%	35.00	10	10	0	152.15%
4	4In the money	0	97.82%	37.00	1	1	0	145.98%
58	58In the money	0	97.32%	40.00	3	3	0	136.99%
44	44In the money	0	94.91%	42.00	2	2	0	131.59%
20	20In the money	0	95.09%	45.00	18	18	0	123.64%
1	1In the money	0	89.74%	47.00	6	6	0	118.81%
254	254In the money	0	88.61%	50.00	7	7	0	112.68%
2	2In the money	0	90.72%	52.50	1	1	0	101.97%
67	67In the money	0	88.78%	55.00	47	47	0	102.56%
1	1In the money	0	87.60%	57.50	9	9	0	98.19%
38	38In the money	0	85.95%	60.00	17	17	0	94.30%
4	4In the money	0	87.92%	62.50	13	13	0	90.44%
48	48In the money	0	83.88%	65.00	197	197	0	86.61%
105	105In the money	0	83.80%	67.50	17	17	0	82.81%
42	42In the money	0	81.98%	70.00	222	222	0	81.09%
4	4In the money	0	81.45%	72.50	7	7	0	78.29%
252	252In the money	0	77.59%	75.00	844	844	0	68.05%
492	492In the money	0	79.08%	77.50	302	302	0	72.37%
1,003	1,003In the money	0	75.37%	80.00	406	406	0	74.33%
160	160In the money	0	76.95%	82.50	12	12	0	70.27%
110	110In the money	0	75.74%	85.00	175	175	0	71.47%
3	3In the money	0	73.88%	87.50	15	15	0	72.35%
27	27In the money	0	73.97%	90.00	9	9	0	72.34%
11	11In the money	0	72.14%	92.50	24	24	0	69.23%
162	162In the money	0	72.05%	95.00	5,151	5,151	0	71.08%
20	20In the money	0	72.39%	97.50	14	14	0	68.56%
163	163In the money	0	72.59%	100.00	1,037	1,027	-10	71.87%
41	41In the money	0	70.40%	105.00	134	134	0	69.88%
STOCK PRICE $108.25
112	111	-1	69.72%	110.00NEAREST ATM	360	361In the money	+1	67.64%
60	92	+32	70.22%	115.00	77	77In the money	0	68.02%
2,990	3,044	+54	68.59%	120.00	119	119In the money	0	66.43%
243	245	+2	68.03%	125.00	48	48In the money	0	66.61%
272	273	+1	66.65%	130.00	36	36In the money	0	67.26%
62	62	0	66.04%	135.00	12	15In the money	+3	65.51%
4,439	4,440	+1	65.73%	140.00	1	1In the money	0	65.53%
366	366	0	67.63%	145.00	2	2In the money	0	62.77%
405	405	0	68.16%	150.00	53	53In the money	0	61.77%
1,061	1,061	0	63.65%	155.00	12	12In the money	0	61.26%
2,661	2,688	+27	63.29%	160.00	0	0In the money	0New	61.76%
721	721	0	63.34%	165.00	0	0In the money	0New	61.98%
29	29	0	63.54%	170.00	0	0In the money	0New	61.01%
7	7	0	70.54%	175.00	0	0In the money	0New	62.92%
29	29	0	71.30%	180.00	1	1In the money	0	0.00%

Feb 19, 2027EXPIRATION72 contracts / 36 strikes

SAVED STOCK PRICE$108.25Nearest ATM strike $110.00

Jump to ATM

CORT option chain expiring 2027-02-19, open interest on 2026-10-23 compared with 2026-10-20
Calls				Strike	Puts
Prev OI	Open interest	Change	IV	Strike	Prev OI	Open interest	Change	IV
0	0In the money	0New	68.88%	42.50	3	3	0	108.39%
1	1In the money	0	70.44%	45.00	0	0	0New	102.00%
0	0In the money	0New	74.91%	47.50	1	1	0	97.95%
2	2In the money	0	73.02%	50.00	4	4	0	93.52%
1	1In the money	0	73.45%	55.00	0	0	0New	84.82%
0	0In the money	0New	72.00%	60.00	2	2	0	79.15%
0	0In the money	0New	70.83%	65.00	6	6	0	73.35%
0	0In the money	0New	72.42%	70.00	8	8	0	69.94%
0	0In the money	0New	71.21%	72.50	0	0	0New	69.25%
2	2In the money	0	69.36%	75.00	27	27	0	68.61%
0	0In the money	0New	70.21%	77.50	1	1	0	67.26%
1	1In the money	0	68.54%	80.00	7	7	0	67.36%
2	2In the money	0	68.55%	82.50	0	0	0New	66.10%
0	0In the money	0New	67.59%	85.00	584	584	0	66.06%
1	1In the money	0	67.74%	87.50	0	0	0New	64.83%
0	0In the money	0New	67.28%	90.00	0	0	0New	64.40%
0	0In the money	0New	66.02%	92.50	0	0	0New	67.62%
4	4In the money	0	66.69%	95.00	0	0	0New	66.23%
0	0In the money	0New	66.09%	97.50	0	1	+1New	66.44%
166	166In the money	0	65.68%	100.00	2	3	+1	65.25%
21	21In the money	0	65.16%	105.00	0	0	0New	66.00%
STOCK PRICE $108.25
604	604	0	64.68%	110.00NEAREST ATM	29	29In the money	0	64.21%
20	20	0	64.07%	115.00	2	2In the money	0	63.75%
103	103	0	64.82%	120.00	5	5In the money	0	61.53%
2	2	0	63.51%	125.00	7	7In the money	0	62.32%
79	79	0	62.85%	130.00	4	4In the money	0	61.65%
0	0	0New	62.72%	135.00	11	11In the money	0	62.16%
21	21	0	62.12%	140.00	22	22In the money	0	60.73%
0	0	0New	62.02%	145.00	5	5In the money	0	61.22%
1	1	0	63.62%	150.00	0	0In the money	0New	60.48%
1	1	0	63.20%	155.00	4	4In the money	0	61.41%
0	0	0New	62.03%	160.00	0	0In the money	0New	59.67%
2	2	0	63.06%	165.00	0	0In the money	0New	59.59%
3	3	0	64.11%	170.00	0	0In the money	0New	58.63%
9	9	0	63.97%	175.00	0	0In the money	0New	58.93%
14	14	0	64.38%	180.00	0	0In the money	0New	58.32%

May 21, 2027EXPIRATION46 contracts / 23 strikes

SAVED STOCK PRICE$108.25Nearest ATM strike $110.00

Jump to ATM

CORT option chain expiring 2027-05-21, open interest on 2026-10-23 compared with 2026-10-20
Calls				Strike	Puts
Prev OI	Open interest	Change	IV	Strike	Prev OI	Open interest	Change	IV
0	0In the money	0New	62.61%	60.00	0	0	0New	63.56%
1	1In the money	0	61.45%	65.00	0	0	0New	61.03%
0	0In the money	0New	61.25%	70.00	0	0	0New	60.06%
0	0In the money	0New	61.79%	75.00	0	0	0New	60.47%
0	0In the money	0New	60.87%	80.00	0	0	0New	60.47%
0	0In the money	0New	61.48%	85.00	0	0	0New	58.83%
2	2In the money	0	60.71%	90.00	0	1	+1New	59.25%
0	0In the money	0New	59.77%	95.00	0	0	0New	59.10%
0	0In the money	0New	59.20%	100.00	0	0	0New	59.20%
0	0In the money	0New	58.64%	105.00	0	0	0New	59.22%
STOCK PRICE $108.25
1	1	0	58.26%	110.00NEAREST ATM	0	0In the money	0New	58.73%
25	25	0	57.60%	115.00	18	18In the money	0	57.01%
3	3	0	57.48%	120.00	3	3In the money	0	55.96%
130	130	0	56.98%	125.00	2	2In the money	0	56.82%
7	7	0	56.14%	130.00	5	5In the money	0	56.69%
8	8	0	56.54%	135.00	0	0In the money	0New	56.04%
10	10	0	55.57%	140.00	0	0In the money	0New	55.87%
26	26	0	55.30%	145.00	0	0In the money	0New	55.75%
5	5	0	55.32%	150.00	2	2In the money	0	55.15%
0	0	0New	55.16%	155.00	5	5In the money	0	55.43%
9	9	0	54.83%	160.00	0	0In the money	0New	54.43%
0	0	0New	54.54%	165.00	0	0In the money	0New	54.22%
14	14	0	54.99%	170.00	0	0In the money	0New	54.07%

Jan 21, 2028EXPIRATION100 contracts / 50 strikes

SAVED STOCK PRICE$108.25Nearest ATM strike $110.00

Jump to ATM

CORT option chain expiring 2028-01-21, open interest on 2026-10-23 compared with 2026-10-20
Calls				Strike	Puts
Prev OI	Open interest	Change	IV	Strike	Prev OI	Open interest	Change	IV
11	11In the money	0	73.90%	17.50	2	2	0	89.36%
6	6In the money	0	0.00%	20.00	2	2	0	121.56%
0	0In the money	0New	74.20%	22.50	1	1	0	113.02%
2	2In the money	0	69.82%	25.00	0	0	0New	105.58%
0	0In the money	0New	71.00%	27.50	0	0	0New	99.01%
34	34In the money	0	63.59%	30.00	3	3	0	93.64%
48	48In the money	0	67.09%	32.50	1	1	0	87.79%
112	112In the money	0	61.01%	35.00	4	4	0	82.92%
23	23In the money	0	65.61%	37.50	12	12	0	78.44%
62	62In the money	0	63.92%	40.00	67	67	0	74.29%
6	6In the money	0	61.70%	42.50	1	1	0	70.42%
5	5In the money	0	61.78%	45.00	7	7	0	66.74%
9	9In the money	0	59.52%	47.50	11	11	0	63.33%
13	13In the money	0	59.17%	50.00	5	5	0	60.29%
3	3In the money	0	58.59%	52.50	1	1	0	57.06%
4	4In the money	0	57.83%	55.00	0	0	0New	57.22%
4	4In the money	0	58.30%	57.50	0	0	0New	54.32%
6	6In the money	0	57.21%	60.00	23	23	0	54.20%
1	1In the money	0	57.21%	62.50	0	0	0New	53.86%
0	0In the money	0New	55.93%	65.00	2	2	0	55.52%
2	2In the money	0	55.62%	67.50	1	1	0	54.73%
9	9In the money	0	55.17%	70.00	400	400	0	53.85%
7	7In the money	0	55.49%	72.50	0	0	0New	53.77%
33	33In the money	0	54.94%	75.00	183	183	0	52.52%
2	2In the money	0	54.77%	77.50	21	21	0	53.96%
29	29In the money	0	54.62%	80.00	81	81	0	52.36%
0	0In the money	0New	55.53%	82.50	0	0	0New	52.80%
39	39In the money	0	53.98%	85.00	0	0	0New	52.79%
0	0In the money	0New	55.69%	87.50	0	0	0New	52.38%
3	3In the money	0	53.61%	90.00	21	21	0	52.38%
49	49In the money	0	53.59%	92.50	1	1	0	53.29%
1	1In the money	0	53.47%	95.00	3	3	0	52.68%
3	3In the money	0	53.98%	97.50	0	0	0New	52.10%
185	195In the money	+10	55.93%	100.00	32	32	0	52.51%
22	22In the money	0	52.69%	105.00	0	0	0New	52.20%
STOCK PRICE $108.25
11	12	+1	52.66%	110.00NEAREST ATM	696	696In the money	0	51.76%
11	28	+17	51.79%	115.00	2	2In the money	0	51.44%
13	13	0	51.73%	120.00	1	1In the money	0	51.13%
528	529	+1	50.88%	125.00	0	0In the money	0New	50.42%
5	5	0	50.32%	130.00	0	0In the money	0New	50.70%
4	4	0	50.05%	135.00	0	0In the money	0New	49.83%
767	767	0	49.46%	140.00	4	4In the money	0	49.80%
118	134	+16	49.38%	145.00	3	3In the money	0	48.47%
41	42	+1	49.76%	150.00	0	0In the money	0New	48.79%
2	2	0	48.77%	155.00	0	0In the money	0New	48.79%
498	589	+91	48.01%	160.00	0	0In the money	0New	48.50%
10	10	0	49.55%	165.00	0	0In the money	0New	48.64%
7	7	0	46.69%	170.00	0	0In the money	0New	48.57%
0	0	0New	46.40%	175.00	0	0In the money	0New	48.96%
92	93	+1	47.84%	180.00	0	0In the money	0New	48.37%

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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