First Interstate BancSystem, Inc.
DE ˙ DB ˙ US32055Y2019
30,20 € 0,00 (0,00%)
2026-06-01
DEL PRIS
SecurityDE:4FB / First Interstate BancSystem, Inc.
InstitutionCitadel Advisors Llc
ManagerKen Griffin
Latest Disclosed Ownership93,374 shares
Latest Disclosed Value $ 3,118,692
Citadel Advisors Llc ownership in 4FB / First Interstate BancSystem, Inc.

On May 15, 2026 - Citadel Advisors Llc filed a 13F-HR form disclosing ownership of 93,374 shares of First Interstate BancSystem, Inc. (DE:4FB) valued at $2,651,822 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 200,815 shares of First Interstate BancSystem, Inc.. This represents a change in shares of -53.50% during the quarter. The current value of the position is $2,819,895 USD.

Citadel Advisors Llc has a history of taking positions in derivatives of the underlying security (4FB) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

DE:4FB / First Interstate BancSystem, Inc. Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F FIRST INTST BANCSYSTEM COM 32055Y201 93,374 -107,441 -53.50 3,119 -55.12 0.0004
2026-02-17 2025-12-31 13F FIRST INTST BANCSYSTEM COM 32055Y201 200,815 181,481 938.66 6,948 1,027.92 0.0009
2025-11-14 2025-09-30 13F FIRST INTST BANCSYSTEM COM 32055Y201 19,334 -7,570 -28.14 616 -20.52 0.0001
2025-08-14 2025-06-30 13F FIRST INTST BANCSYSTEM COM 32055Y201 26,904 -21,019 -43.86 775 -43.51 0.0001
2025-05-15 2025-03-31 13F FIRST INTST BANCSYSTEM COM 32055Y201 47,923 -9,121 -15.99 1,373 -25.92 0.0003
2025-02-14 2024-12-31 13F FIRST INTST BANCSYSTEM COM 32055Y201 57,044 -1,698,676 -96.75 1,852 -96.56 0.0003
2024-11-14 2024-09-30 13F FIRST INTST BANCSYSTEM COM 32055Y201 1,755,720 -171,574 -8.90 53,865 0.64 0.0104
2024-08-14 2024-06-30 13F FIRST INTST BANCSYSTEM COM 32055Y201 1,927,294 723,002 60.04 53,521 63.33 0.0108
2024-05-15 2024-03-31 13F FIRST INTST BANCSYSTEM COM 32055Y201 1,204,292 1,202,096 54,740.26 32,769 48,807.46 0.0063
2024-02-14 2023-12-31 13F FIRST INTST BANCSYSTEM COM 32055Y201 2,196 -48,277 -95.65 68 -94.67 0.0000
2023-11-14 2023-09-30 13F FIRST INTST BANCSYSTEM COM 32055Y201 50,473 -745,006 -93.66 1,259 -93.37 0.0003
2023-08-14 2023-06-30 13F FIRST INTST BANCSYSTEM COM 32055Y201 795,479 -681,759 -46.15 18,964 -57.01 0.0039
2023-05-15 2023-03-31 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 1,477,238 866,285 141.79 44,110 86.80 0.0097
2023-02-14 2022-12-31 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 610,953 -887,964 -59.24 23,613 -60.96 0.0055
2022-11-14 2022-09-30 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 1,498,917 232,304 18.34 60,481 25.29 0.0138
2022-08-15 2022-06-30 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 1,266,613 -543,510 -30.03 48,271 -27.48 0.0124
2022-05-16 2022-03-31 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 1,810,123 1,599,297 758.59 66,558 676.28 0.0137
2022-02-14 2021-12-31 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 210,826 -11,671 -5.25 8,574 -4.28 0.0018
2021-11-15 2021-09-30 13F FIRST INTST BANCSYSTEM Cmn 32055Y201 222,497 99,432 80.80 8,957 73.99 0.0019
2021-08-16 2021-06-30 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 123,065 38,872 46.17 5,148 32.82 0.0012
2021-05-21 2021-03-31 13F/A-1 FIRST INTST BANCSYSTEM COM CL A 32055Y201 84,193 42,640 102.62 3,876 128.81 0.0010
2021-05-17 2021-03-31 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 84,193 42,640 3,876 0.0010
2021-02-16 2020-12-31 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 41,553 17,331 71.55 1,694 119.71 0.0004
2020-11-16 2020-09-30 13F FIRST INTST BANCSYSTEM COM CL A 32055Y201 24,222 -230,501 -90.49 771 -90.22 0.0002
2020-08-14 2020-06-30 13F FIRST INTST BANCSYSTEM Cmn 32055Y201 254,723 -350,345 -57.90 7,886 -54.81 0.0028
2020-05-15 2020-03-31 13F FIRST INTST BANCSYSTEM Cmn 32055Y201 605,068 -49,637 -7.58 17,450 -36.42 0.0078
2020-02-14 2019-12-31 13F FIRST INTST BANCSYSTEM Cmn 32055Y201 654,705 -2,688 -0.41 27,445 3.75 0.0119
2019-11-14 2019-09-30 13F FIRST INTST BANCSYSTEM Cmn 32055Y201 657,393 4,626 0.71 26,453 2.31 0.0125
2019-08-14 2019-06-30 13F FIRST INTST BANCSYSTEM Cmn 32055Y201 652,767 4,838 0.75 25,856 0.22 0.0119
2019-05-15 2019-03-31 13F FIRST INTST BANCSYSTEM Cmn 32055Y201 647,929 19,175 3.05 25,800 12.24 0.0128
2019-02-14 2018-12-31 13F FIRST INTST BANCSYSTEM Cmn 32055Y201 628,754 617,339 5,408.14 22,987 4,398.43 0.0126
2018-11-13 2018-09-30 13F FIRST INTST BANCSYSTEM Cmn 32055Y201 11,415 3,160 38.28 511 46.84 0.0002
2018-08-14 2018-06-30 13F/A-1 FIRST INTST BANCSYSTEM Cmn 32055Y201 8,255 -518 -5.90 348 0.29 0.0002
2018-08-10 2018-06-30 13F FIRST INTST BANCSYSTEM Cmn 32055Y201 8,255 -518 348
2018-05-14 2018-03-31 13F/A-1 FIRST INTST BANCSYSTEM Cmn 32055Y201 8,773 -67,064 -88.43 347 -88.58 0.0002
2018-05-11 2018-03-31 13F FIRST INTST BANCSYSTEM Cmn 32055Y201 8,773 -67,064 347
2018-02-09 2017-12-31 13F FIRST INTST BANCSYSTEM Cmn 32055Y201 75,837 -31,995 -29.67 3,038 -26.33 0.0018
2017-11-09 2017-09-30 13F FIRST INTST BANCSYSTEM Cmn 32055Y201 107,832 46,131 74.77 4,124 79.69 0.0032
2017-08-11 2017-06-30 13F FIRST INTST BANCSYSTEM Cmn 32055Y201 61,701 50,317 442.00 2,295 408.87 0.0019
2017-05-12 2017-03-31 13F FIRST INTST BANCSYSTEM Cmn 32055Y201 11,384 4,450 64.18 451 52.88 0.0004
2017-02-10 2016-12-31 13F FIRST INTST BANCSYSTEM Cmn 32055Y201 6,934 -3,646 -34.46 295 -11.41 0.0003
2017-01-31 2016-09-30 13F/A-1 FIRST INTST BANCSYSTEM Cmn 32055Y201 10,580 10,580 0.00 333 0.0003
2016-11-10 2016-09-30 13F FIRST INTERSTATE BANCSYS Cmn 32055Y201 10,580 333
2016-02-12 2015-12-31 13F FIRST INTERSTATE BANCSYS Cmn 32055Y201 0 -49,146 -100.00 0 -100.00
2015-11-16 2015-09-30 13F FIRST INTERSTATE BANCSYS Cmn 32055Y201 49,146 -20,383 -29.32 1,368 -29.08 0.0013
2015-08-14 2015-06-30 13F FIRST INTERSTATE BANCSYS Cmn 32055Y201 69,529 -29,289 -29.64 1,929 -29.83 0.0017
2015-05-15 2015-03-31 13F FIRST INTERSTATE BANCSYS Cmn 32055Y201 98,818 56,050 131.06 2,749 131.01 0.0031
2015-02-17 2014-12-31 13F FIRST INTERSTATE BANCSYS Cmn 32055Y201 42,768 -26,602 -38.35 1,190 -35.47 0.0014
2014-11-14 2014-09-30 13F FIRST INTERSTATE BANCSYS Cmn 32055Y201 69,370 2,296 3.42 1,844 1.15 0.0023
2014-08-14 2014-06-30 13F FIRST INTERSTATE BANCSYS Cmn 32055Y201 67,074 14,226 26.92 1,823 22.27 0.0025
2014-05-15 2014-03-31 13F FIRST INTERSTATE BANCSYS Cmn 32055Y201 52,848 33,548 173.82 1,491 172.08 0.0021
2014-02-14 2013-12-31 13F FIRST INTERSTATE BANCSYS Cmn 32055Y201 19,300 8,831 84.35 548 116.60 0.0007
2013-11-14 2013-09-30 13F FIRST INTERSTATE BANCSYS Cmn 32055Y201 10,469 6,345 153.86 253 197.65 0.0004
2013-08-14 2013-06-30 13F FIRST INTERSTATE BANCSYS Cmn 32055Y201 4,124 4,124 85 0.0001
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2025-08-14 2025-06-30 13F FIRST INTST BANCSYSTEM COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-05-15 2025-03-31 13F FIRST INTST BANCSYSTEM COM Call 4,700 422.22 135 362.07 n/a n/a n/a
2025-02-14 2024-12-31 13F FIRST INTST BANCSYSTEM COM Call 900 -82.00 29 -81.05 n/a n/a n/a
2024-11-14 2024-09-30 13F FIRST INTST BANCSYSTEM COM Call 5,000 108.33 153 131.82 n/a n/a n/a
2024-08-14 2024-06-30 13F FIRST INTST BANCSYSTEM COM Call 2,400 -59.32 67 -58.75 n/a n/a n/a
2024-05-15 2024-03-31 13F FIRST INTST BANCSYSTEM COM Call 5,900 -13.24 161 -23.44 n/a n/a n/a
2024-02-14 2023-12-31 13F FIRST INTST BANCSYSTEM COM Call 6,800 119.35 209 171.43 n/a n/a n/a
2023-11-14 2023-09-30 13F FIRST INTST BANCSYSTEM COM Call 3,100 -59.21 77 -57.46 n/a n/a n/a
2023-08-14 2023-06-30 13F FIRST INTST BANCSYSTEM COM Call 7,600 -29.63 181 -43.79 n/a n/a n/a
2023-05-15 2023-03-31 13F FIRST INTST BANCSYSTEM COM CL A Call 10,800 2,600.00 322 2,046.67 n/a n/a n/a
2023-02-14 2022-12-31 13F FIRST INTST BANCSYSTEM COM CL A Call 400 -94.67 15 -95.05 n/a n/a n/a
2022-11-14 2022-09-30 13F FIRST INTST BANCSYSTEM COM CL A Call 7,500 -87.24 303 -86.48 n/a n/a n/a
2022-08-15 2022-06-30 13F FIRST INTST BANCSYSTEM COM CL A Call 58,800 25.91 2,241 30.52 n/a n/a n/a
2022-05-16 2022-03-31 13F FIRST INTST BANCSYSTEM COM CL A Call 46,700 491.14 1,717 434.89 n/a n/a n/a
2022-02-14 2021-12-31 13F FIRST INTST BANCSYSTEM COM CL A Call 7,900 321 n/a n/a n/a
2022-03-11 2021-09-30 13F/A FIRST INTST BANCSYSTEM COM CL A Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-11-15 2021-09-30 13F FIRST INTST BANCSYSTEM COM CL A Call 0 0 n/a n/a n/a
2021-08-16 2021-06-30 13F FIRST INTST BANCSYSTEM COM CL A Call 8,900 -65.50 372 -68.69 n/a n/a n/a
2021-05-21 2021-03-31 13F/A FIRST INTST BANCSYSTEM COM CL A Call 25,800 69.74 1,188 91.61 n/a n/a n/a
2021-05-17 2021-03-31 13F FIRST INTST BANCSYSTEM COM CL A Call 25,800 1,188 n/a n/a n/a
2021-02-16 2020-12-31 13F FIRST INTST BANCSYSTEM COM CL A Call 15,200 -42.21 620 -26.01 n/a n/a n/a
2020-11-16 2020-09-30 13F FIRST INTST BANCSYSTEM COM CL A Call 26,300 2.73 838 5.67 n/a n/a n/a
2020-08-14 2020-06-30 13F FIRST INTST BANCSYSTEM Cmn Call 25,600 134.86 793 152.55 n/a n/a n/a
2020-05-15 2020-03-31 13F FIRST INTST BANCSYSTEM Cmn Call 10,900 109.62 314 44.04 n/a n/a n/a
2020-02-14 2019-12-31 13F FIRST INTST BANCSYSTEM Cmn Call 5,200 -53.15 218 -51.23 n/a n/a n/a
2019-11-14 2019-09-30 13F FIRST INTST BANCSYSTEM Cmn Call 11,100 447 n/a n/a n/a
2016-02-12 2015-12-31 13F FIRST INTERSTATE BANCSYS Cmn Call 0 -100.00 0 -100.00 n/a n/a n/a
2015-11-16 2015-09-30 13F FIRST INTERSTATE BANCSYS Cmn Call 300 -62.50 8 -63.64 n/a n/a n/a
2015-08-14 2015-06-30 13F FIRST INTERSTATE BANCSYS Cmn Call 800 166.67 22 175.00 n/a n/a n/a
2015-05-15 2015-03-31 13F FIRST INTERSTATE BANCSYS Cmn Call 300 0.00 8 0.00 n/a n/a n/a
2015-02-17 2014-12-31 13F FIRST INTERSTATE BANCSYS Cmn Call 300 -85.00 8 -84.91 n/a n/a n/a
2014-11-14 2014-09-30 13F FIRST INTERSTATE BANCSYS Cmn Call 2,000 53 n/a n/a n/a
2014-08-14 2014-06-30 13F FIRST INTERSTATE BANCSYS Cmn Call 0 -100.00 0 -100.00 n/a n/a n/a
2014-05-15 2014-03-31 13F FIRST INTERSTATE BANCSYS Cmn Call 1,100 0.00 31 0.00 n/a n/a n/a
2014-02-14 2013-12-31 13F FIRST INTERSTATE BANCSYS Cmn Call 1,100 31 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-02-17 2025-12-31 13F FIRST INTST BANCSYSTEM COM Put 0 -100.00 0 n/a n/a n/a
2025-11-14 2025-09-30 13F FIRST INTST BANCSYSTEM COM Put 68,300 2.40 2,177 13.22 n/a n/a n/a
2025-08-14 2025-06-30 13F FIRST INTST BANCSYSTEM COM Put 66,700 66,600.00 1,922 96,000.00 n/a n/a n/a
2025-05-15 2025-03-31 13F FIRST INTST BANCSYSTEM COM Put 100 3 n/a n/a n/a
2025-02-14 2024-12-31 13F FIRST INTST BANCSYSTEM COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-14 2024-09-30 13F FIRST INTST BANCSYSTEM COM Put 3,600 -36.84 110 -30.38 n/a n/a n/a
2024-08-14 2024-06-30 13F FIRST INTST BANCSYSTEM COM Put 5,700 90.00 158 95.06 n/a n/a n/a
2024-05-15 2024-03-31 13F FIRST INTST BANCSYSTEM COM Put 3,000 328.57 82 285.71 n/a n/a n/a
2024-02-14 2023-12-31 13F FIRST INTST BANCSYSTEM COM Put 700 -68.18 22 -61.11 n/a n/a n/a
2023-11-14 2023-09-30 13F FIRST INTST BANCSYSTEM COM Put 2,200 -68.57 55 -67.47 n/a n/a n/a
2023-08-14 2023-06-30 13F FIRST INTST BANCSYSTEM COM Put 7,000 9.38 167 -13.09 n/a n/a n/a
2023-05-15 2023-03-31 13F FIRST INTST BANCSYSTEM COM CL A Put 6,400 -73.22 191 -79.31 n/a n/a n/a
2023-02-14 2022-12-31 13F FIRST INTST BANCSYSTEM COM CL A Put 23,900 924 n/a n/a n/a
2022-08-15 2022-06-30 13F FIRST INTST BANCSYSTEM COM CL A Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-05-16 2022-03-31 13F FIRST INTST BANCSYSTEM COM CL A Put 15,200 559 n/a n/a n/a
2022-02-14 2021-12-31 13F FIRST INTST BANCSYSTEM Cmn Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-11-15 2021-09-30 13F FIRST INTST BANCSYSTEM Cmn Put 11,500 463 n/a n/a n/a
2015-08-14 2015-06-30 13F FIRST INTERSTATE BANCSYS Cmn Put 0 -100.00 0 -100.00 n/a n/a n/a
2015-05-15 2015-03-31 13F FIRST INTERSTATE BANCSYS Cmn Put 200 6 n/a n/a n/a
2014-08-14 2014-06-30 13F FIRST INTERSTATE BANCSYS Cmn Put 0 -100.00 0 -100.00 n/a n/a n/a
2014-05-15 2014-03-31 13F FIRST INTERSTATE BANCSYS Cmn Put 1,000 28 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.