OI update signal: Likely updated MSFT / AAPL · Checked Oct 26, 11:45 EDT
The latest collection was incomplete. Some data may be out of date.
View affected symbolsAADX,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

EFX

Daily option chain

Daily open interest

vs Oct 21, 2026

Saved stock price: $182.44 · 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
258 contracts / 4 expirationsClick OI for history
Nov 20, 2026EXPIRATION50 contracts / 25 strikes
SAVED STOCK PRICE$182.44Nearest ATM strike $180.00
Jump to ATM
EFX option chain expiring 2026-11-20, open interest on 2026-10-23 compared with 2026-10-21
CallsStrikePuts
Prev OIOpen interestChangeIVPrev OIOpen interestChangeIV
0 0In the money 0New 86.49% 105.00 0 0 0New 124.31%
0 0In the money 0New 78.19% 110.00 27 27 0 67.28%
0 0In the money 0New 83.50% 115.00 54 54 0 92.81%
8 8In the money 0 70.68% 120.00 51 51 0 99.13%
0 0In the money 0New 0.00% 125.00 152 151 -1 91.15%
0 0In the money 0New 61.75% 130.00 895 906 +11 58.07%
7 7In the money 0 52.79% 135.00 223 226 +3 67.06%
4 4In the money 0 0.00% 140.00 125 128 +3 59.35%
36 36In the money 0 42.42% 145.00 277 256 -21 63.83%
30 30In the money 0 43.29% 150.00 111 111 0 57.81%
40 35In the money -5 38.00% 155.00 35 36 +1 46.88%
24 22In the money -2 41.88% 160.00 105 126 +21 49.32%
68 66In the money -2 41.44% 165.00 55 55 0 42.90%
181 180In the money -1 41.08% 170.00 103 99 -4 44.65%
227 240In the money +13 41.77% 175.00 21 57 +36 42.35%
47 87In the money +40 42.27% 180.00NEAREST ATM 67 78 +11 42.57%
STOCK PRICE $182.44
40 41 +1 41.91% 185.00 7 7In the money 0 42.43%
40 47 +7 42.80% 190.00 1 2In the money +1 43.05%
86 201 +115 39.87% 195.00 0 0In the money 0New 44.51%
548 557 +9 40.51% 200.00 1 51In the money +50 44.70%
42 42 0 45.94% 210.00 0 0In the money 0New 38.59%
50 51 +1 53.27% 220.00 1 1In the money 0 37.56%
1 1 0 59.58% 230.00 0 0In the money 0New 0.00%
0 0 0New 66.55% 240.00 0 0In the money 0New 0.00%
170 211 +41 73.17% 250.00 1 1In the money 0 0.00%
Dec 18, 2026EXPIRATION74 contracts / 37 strikes
SAVED STOCK PRICE$182.44Nearest ATM strike $180.00
Jump to ATM
EFX option chain expiring 2026-12-18, open interest on 2026-10-23 compared with 2026-10-21
CallsStrikePuts
Prev OIOpen interestChangeIVPrev OIOpen interestChangeIV
0 0In the money 0New 89.56% 85.00 0 0 0New 116.51%
0 0In the money 0New 96.27% 90.00 10 10 0 109.31%
0 0In the money 0New 87.32% 95.00 16 16 0 102.00%
0 0In the money 0New 71.50% 100.00 3 3 0 95.04%
0 0In the money 0New 74.02% 105.00 10 10 0 88.83%
23 23In the money 0 69.42% 110.00 7 7 0 82.46%
3 3In the money 0 66.15% 115.00 23 23 0 77.08%
0 0In the money 0New 54.70% 120.00 25 25 0 71.16%
0 0In the money 0New 0.00% 125.00 13 13 0 66.69%
1 1In the money 0 35.77% 130.00 120 120 0 61.63%
1 1In the money 0 42.24% 135.00 35 35 0 56.13%
12 12In the money 0 48.83% 140.00 168 168 0 51.74%
12 12In the money 0 41.85% 145.00 27 27 0 48.35%
7 7In the money 0 39.66% 150.00 35 38 +3 44.67%
10 10In the money 0 39.70% 155.00 8 15 +7 44.30%
36 37In the money +1 39.66% 160.00 33 27 -6 40.38%
15 15In the money 0 40.77% 165.00 14 15 +1 40.18%
2 2In the money 0 39.07% 170.00 9 21 +12 39.20%
20 27In the money +7 38.98% 175.00 121 126 +5 39.53%
20 24In the money +4 40.46% 180.00NEAREST ATM 19 24 +5 39.60%
STOCK PRICE $182.44
71 54 -17 39.75% 185.00 14 14In the money 0 40.88%
86 93 +7 39.79% 190.00 24 24In the money 0 39.71%
97 97 0 39.96% 195.00 58 58In the money 0 40.65%
115 136 +21 40.41% 200.00 38 38In the money 0 39.95%
91 98 +7 40.70% 210.00 0 0In the money 0New 38.35%
74 74 0 41.60% 220.00 0 0In the money 0New 40.32%
21 25 +4 39.65% 230.00 0 0In the money 0New 42.70%
36 35 -1 49.35% 240.00 0 0In the money 0New 43.46%
154 154 0 52.82% 250.00 0 0In the money 0New 0.00%
8 8 0 56.66% 260.00 0 0In the money 0New 0.00%
13 13 0 57.96% 270.00 0 0In the money 0New 0.00%
4 4 0 64.89% 280.00 0 0In the money 0New 0.00%
0 0 0New 68.63% 290.00 0 0In the money 0New 0.00%
20 20 0 72.46% 300.00 0 0In the money 0New 0.00%
0 0 0New 76.13% 310.00 0 0In the money 0New 0.00%
2 2 0 79.63% 320.00 0 0In the money 0New 0.00%
1 1 0 82.99% 330.00 0 0In the money 0New 0.00%
Jan 15, 2027EXPIRATION66 contracts / 33 strikes
SAVED STOCK PRICE$182.44Nearest ATM strike $180.00
Jump to ATM
EFX option chain expiring 2027-01-15, open interest on 2026-10-23 compared with 2026-10-21
CallsStrikePuts
Prev OIOpen interestChangeIVPrev OIOpen interestChangeIV
0 0In the money 0New 74.70% 85.00 1 1 0 64.30%
1 1In the money 0 74.16% 90.00 5 5 0 89.80%
1 1In the money 0 67.99% 95.00 8 6 -2 84.21%
1 1In the money 0 66.33% 100.00 9 9 0 78.46%
0 0In the money 0New 61.81% 105.00 16 16 0 73.36%
0 0In the money 0New 58.41% 110.00 17 17 0 68.46%
0 0In the money 0New 48.40% 115.00 7 7 0 63.72%
7 7In the money 0 44.41% 120.00 9 9 0 60.22%
5 5In the money 0 45.50% 125.00 21 21 0 55.44%
2 2In the money 0 42.22% 130.00 7 7 0 51.28%
2 2In the money 0 44.41% 135.00 46 47 +1 48.42%
1 1In the money 0 41.42% 140.00 90 84 -6 41.75%
12 12In the money 0 40.41% 145.00 12 12 0 42.15%
19 19In the money 0 39.27% 150.00 7 7 0 40.44%
9 8In the money -1 38.41% 155.00 175 175 0 41.66%
16 16In the money 0 38.83% 160.00 180 181 +1 39.33%
4 4In the money 0 37.83% 165.00 6 6 0 37.69%
25 27In the money +2 40.15% 170.00 2 2 0 38.18%
13 17In the money +4 37.91% 175.00 60 64 +4 38.74%
32 32In the money 0 39.10% 180.00NEAREST ATM 34 34 0 38.49%
STOCK PRICE $182.44
25 30 +5 39.38% 185.00 43 48In the money +5 37.67%
20 20 0 38.14% 190.00 6 6In the money 0 39.05%
1 1 0 38.28% 195.00 4 4In the money 0 38.76%
19 26 +7 38.73% 200.00 0 0In the money 0New 39.06%
24 25 +1 39.06% 210.00 0 0In the money 0New 38.59%
6 7 +1 39.22% 220.00 0 0In the money 0New 39.06%
7 8 +1 39.20% 230.00 0 0In the money 0New 40.30%
13 13 0 41.33% 240.00 0 0In the money 0New 38.80%
5 5 0 45.08% 250.00 0 0In the money 0New 41.32%
0 0 0New 48.07% 260.00 0 0In the money 0New 0.00%
0 0 0New 51.28% 270.00 0 0In the money 0New 0.00%
8 8 0 54.64% 280.00 0 0In the money 0New 0.00%
18 18 0 57.80% 290.00 0 0In the money 0New 0.00%
Apr 16, 2027EXPIRATION68 contracts / 34 strikes
SAVED STOCK PRICE$182.44Nearest ATM strike $180.00
Jump to ATM
EFX option chain expiring 2027-04-16, open interest on 2026-10-23 compared with 2026-10-21
CallsStrikePuts
Prev OIOpen interestChangeIVPrev OIOpen interestChangeIV
0 0In the money 0New 61.24% 80.00 0 0 0New 71.90%
0 0In the money 0New 53.72% 85.00 0 0 0New 67.55%
0 0In the money 0New 54.82% 90.00 0 0 0New 63.43%
0 0In the money 0New 37.14% 95.00 4 4 0 59.77%
2 2In the money 0 46.27% 100.00 21 21 0 56.25%
0 0In the money 0New 44.02% 105.00 4 4 0 47.26%
0 0In the money 0New 40.99% 110.00 5 5 0 50.59%
0 0In the money 0New 43.00% 115.00 15 15 0 47.51%
3 3In the money 0 40.67% 120.00 55 55 0 44.32%
0 0In the money 0New 41.64% 125.00 11 13 +2 43.31%
0 0In the money 0New 41.33% 130.00 19 19 0 40.65%
2 2In the money 0 39.56% 135.00 323 323 0 39.95%
10 10In the money 0 38.79% 140.00 329 324 -5 38.12%
37 36In the money -1 39.33% 145.00 16 11 -5 39.66%
4 4In the money 0 38.87% 150.00 7 7 0 38.80%
7 7In the money 0 39.60% 155.00 15 16 +1 38.28%
9 9In the money 0 39.20% 160.00 6 5 -1 39.33%
14 14In the money 0 38.48% 165.00 3 3 0 38.34%
4 10In the money +6 39.37% 170.00 3 3 0 38.86%
56 56In the money 0 39.42% 175.00 8 8 0 38.25%
11 9In the money -2 38.43% 180.00NEAREST ATM 4 4 0 39.08%
STOCK PRICE $182.44
5 7 +2 37.99% 185.00 2 2In the money 0 38.35%
1 3 +2 38.26% 190.00 3 3In the money 0 38.64%
2 14 +12 38.96% 195.00 5 5In the money 0 38.42%
5 5 0 38.40% 200.00 21 21In the money 0 38.34%
11 26 +15 38.09% 210.00 1 1In the money 0 38.00%
37 37 0 38.12% 220.00 8 8In the money 0 37.40%
2 2 0 38.04% 230.00 0 0In the money 0New 37.32%
33 34 +1 37.20% 240.00 0 0In the money 0New 37.36%
2 2 0 37.43% 250.00 0 0In the money 0New 36.87%
1 1 0 37.29% 260.00 0 0In the money 0New 39.52%
0 0 0New 37.79% 270.00 0 0In the money 0New 41.32%
0 0 0New 39.76% 280.00 0 0In the money 0New 0.00%
102 102 0 37.09% 290.00 0 0In the money 0New 0.00%

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