OI update signal: Not confirmed MSFT / AAPL · Checked Oct 23, 09:56 EDT
The latest collection has not completed. Some symbols may not be updated yet.
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

FIBK

Daily option chain

Daily open interest

vs Oct 20, 2026

Saved stock price: $35.97 · 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
72 contracts / 4 expirationsClick OI for history
Nov 20, 2026EXPIRATION18 contracts / 9 strikes
SAVED STOCK PRICE$35.97Nearest ATM strike $35.00
Jump to ATM
FIBK option chain expiring 2026-11-20, open interest on 2026-10-23 compared with 2026-10-20
CallsStrikePuts
Prev OIOpen interestChangeIVPrev OIOpen interestChangeIV
0 0In the money 0New 0.00% 20.00 0 0 0New 121.95%
5 5In the money 0 0.00% 22.50 0 0 0New 112.30%
6 6In the money 0 0.00% 25.00 0 0 0New 93.72%
0 0In the money 0New 46.49% 30.00 1 1 0 57.36%
14 14In the money 0 37.12% 35.00NEAREST ATM 1 1 0 30.62%
STOCK PRICE $35.97
29 25 -4 25.37% 40.00 0 0In the money 0New 30.27%
0 0 0New 56.49% 45.00 0 0In the money 0New 48.22%
0 0 0New 72.49% 50.00 0 0In the money 0New 42.52%
0 0 0New 88.43% 55.00 0 0In the money 0New 71.82%
Dec 18, 2026EXPIRATION18 contracts / 9 strikes
SAVED STOCK PRICE$35.97Nearest ATM strike $35.00
Jump to ATM
FIBK option chain expiring 2026-12-18, open interest on 2026-10-23 compared with 2026-10-20
CallsStrikePuts
Prev OIOpen interestChangeIVPrev OIOpen interestChangeIV
0 0In the money 0New 0.00% 17.50 0 0 0New 114.98%
0 0In the money 0New 0.00% 20.00 0 0 0New 96.62%
0 0In the money 0New 0.00% 22.50 0 0 0New 82.07%
0 0In the money 0New 0.00% 25.00 3 3 0 68.50%
0 0In the money 0New 37.76% 30.00 1,003 1,003 0 43.04%
26 26In the money 0 33.86% 35.00NEAREST ATM 16 16 0 31.27%
STOCK PRICE $35.97
79 79 0 25.04% 40.00 0 0In the money 0New 25.34%
168 168 0 41.18% 45.00 1 1In the money 0 30.07%
2 2 0 52.87% 50.00 0 0In the money 0New 0.00%
Mar 19, 2027EXPIRATION18 contracts / 9 strikes
SAVED STOCK PRICE$35.97Nearest ATM strike $35.00
Jump to ATM
FIBK option chain expiring 2027-03-19, open interest on 2026-10-23 compared with 2026-10-20
CallsStrikePuts
Prev OIOpen interestChangeIVPrev OIOpen interestChangeIV
0 0In the money 0New 0.00% 20.00 0 0 0New 64.19%
0 0In the money 0New 0.00% 22.50 0 0 0New 54.55%
0 0In the money 0New 37.14% 25.00 3 3 0 46.40%
0 0In the money 0New 33.70% 30.00 6 6 0 34.46%
11 11In the money 0 30.38% 35.00NEAREST ATM 3 3 0 30.17%
STOCK PRICE $35.97
16 16 0 26.21% 40.00 0 0In the money 0New 26.29%
41 41 0 28.04% 45.00 0 0In the money 0New 26.84%
0 0 0New 34.35% 50.00 0 0In the money 0New 32.83%
0 0 0New 37.77% 55.00 0 0In the money 0New 39.28%
Jun 17, 2027EXPIRATION18 contracts / 9 strikes
SAVED STOCK PRICE$35.97Nearest ATM strike $35.00
Jump to ATM
FIBK option chain expiring 2027-06-17, open interest on 2026-10-23 compared with 2026-10-20
CallsStrikePuts
Prev OIOpen interestChangeIVPrev OIOpen interestChangeIV
0 0In the money 0New 0.00% 17.50 0 0 0New 60.76%
0 0In the money 0New 0.00% 20.00 0 0 0New 52.01%
0 0In the money 0New 0.00% 22.50 0 0 0New 44.79%
0 0In the money 0New 38.56% 25.00 0 0 0New 39.58%
0 0In the money 0New 35.40% 30.00 0 0 0New 32.69%
0 0In the money 0New 31.11% 35.00NEAREST ATM 0 0 0New 29.65%
STOCK PRICE $35.97
0 20 +20New 28.04% 40.00 0 0In the money 0New 26.69%
0 0 0New 26.53% 45.00 0 0In the money 0New 24.74%
0 0 0New 28.15% 50.00 0 0In the money 0New 25.49%

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