Avista Corporation
US ˙ NYSE ˙ US05379B1070

SecurityAVA / Avista Corporation
InstitutionSei Investments Co
Latest Disclosed Ownership483,391 shares
Latest Disclosed Value $ 18,629,891
Sei Investments Co ownership in AVA / Avista Corporation

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 483,391 shares of Avista Corporation (US:AVA) valued at $18,629,889 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 477,238 shares of Avista Corporation. This represents a change in shares of 1.29% during the quarter. The current value of the position is $19,857,702 USD.

Sei Investments Co has a history of taking positions in derivatives of the underlying security (AVA) in the form of stock options.

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.

AVA / Avista Corporation 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)
2026-02-13 2025-12-31 13F AVISTA COM 05379B107 483,391 6,153 1.29 18,630 3.24 0.0184
2025-11-13 2025-09-30 13F AVISTA COM 05379B107 477,238 326,469 216.54 18,044 215.40 0.0194
2025-08-14 2025-06-30 13F AVISTA COM 05379B107 150,769 47,745 46.34 5,722 32.65 0.0066
2025-05-14 2025-03-31 13F/A-1 AVISTA COM 05379B107 103,024 -23,025 -18.27 4,314 -6.58 0.0056
2025-05-13 2025-03-31 13F AVISTA COM 05379B107 119,211 -6,838 4,373 0.0048
2025-02-11 2024-12-31 13F AVISTA COM 05379B107 126,049 6,261 5.23 4,617 -0.52 0.0059
2024-11-12 2024-09-30 13F AVISTA COM 05379B107 119,788 29,880 33.23 4,642 49.18 0.0060
2024-08-13 2024-06-30 13F AVISTA COM 05379B107 89,908 69,857 348.40 3,112 343.16 0.0044
2024-05-07 2024-03-31 13F AVISTA COM 05379B107 20,051 -73,450 -78.56 703 -78.99 0.0010
2024-02-14 2023-12-31 13F AVISTA COM 05379B107 93,501 -1,554 -1.63 3,342 8.62 0.0054
2023-11-14 2023-09-30 13F AVISTA COM 05379B107 95,055 21,260 28.81 3,077 6.18 0.0055
2023-08-11 2023-06-30 13F AVISTA COM 05379B107 73,795 -516 -0.69 2,898 -8.15 0.0051
2023-05-12 2023-03-31 13F AVISTA COM 05379B107 74,311 -7,361 -9.01 3,154 -12.90 0.0059
2023-02-10 2022-12-31 13F AVISTA COM 05379B107 81,672 -1,251 -1.51 3,621 17.83 0.0080
2022-11-14 2022-09-30 13F AVISTA COM 05379B107 82,923 -2,340 -2.74 3,073 -17.17 0.0069
2022-08-15 2022-06-30 13F AVISTA COM 05379B107 85,263 -6,383 -6.96 3,710 -10.34 0.0080
2022-05-13 2022-03-31 13F AVISTA COM 05379B107 91,646 -2,972 -3.14 4,138 2.91 0.0083
2022-02-14 2021-12-31 13F AVISTA COM 05379B107 94,618 69,059 270.19 4,021 302.10 0.0075
2021-11-12 2021-09-30 13F AVISTA COM 05379B107 25,559 -47 -0.18 1,000 -8.51 0.0021
2021-08-06 2021-06-30 13F AVISTA COM 05379B107 25,606 1,698 7.10 1,093 2.44 0.0024
2021-05-12 2021-03-31 13F AVISTA COM 05379B107 23,908 -1,300 -5.16 1,067 5.43 0.0027
2021-02-08 2020-12-31 13F AVISTA COM 05379B107 25,208 467 1.89 1,012 19.91 0.0026
2020-12-04 2020-09-30 13F/A-1 AVISTA COM 05379B107 24,741 -7,236 -22.63 844 -29.14 0.0024
2020-11-06 2020-09-30 13F AVISTA COM 05379B107 24,741 -7,236 844 2,032.1643
2020-08-17 2020-06-30 13F/A-1 AVISTA COM 05379B107 31,977 184 0.58 1,191 -11.52 0.0037
2020-08-11 2020-06-30 13F AVISTA COM 05379B107 28,456 -3,337 1,209 3,279.4769
2020-05-14 2020-03-31 13F AVISTA COM 05379B107 31,793 -552 -1.71 1,346 -12.88 0.0049
2020-02-06 2019-12-31 13F AVISTA COM 05379B107 32,345 -1,115 -3.33 1,545 -4.39 0.0046
2019-11-12 2019-09-30 13F AVISTA COM 05379B107 33,460 254 0.76 1,616 9.41 0.0041
2019-08-14 2019-06-30 13F AVISTA COM 05379B107 33,206 2,625 8.58 1,477 18.63 0.0048
2019-05-15 2019-03-31 13F AVISTA COM 05379B107 30,581 30,581 1,245 0.0042
2018-11-08 2018-09-30 13F AVISTA COM 05379B107 0 -528 -100.00 0 -100.00
2018-08-03 2018-06-30 13F AVISTA COM 05379B107 528 -47,617 -98.90 28 -98.87 0.0001
2018-05-11 2018-03-31 13F AVISTA COM 05379B107 48,145 -22,210 -31.57 2,468 -31.88 0.0095
2018-02-08 2017-12-31 13F AVISTA COM 05379B107 70,355 -8,578 -10.87 3,623 -11.33 0.0126
2017-11-06 2017-09-30 13F AVISTA COM 05379B107 78,933 -11,141 -12.37 4,086 6.85 0.0145
2017-07-31 2017-06-30 13F AVISTA COM 05379B107 90,074 10,758 13.56 3,824 23.47 0.0152
2017-05-05 2017-03-31 13F AVISTA COM 05379B107 79,316 672 0.85 3,097 -1.53 0.0136
2017-02-02 2016-12-31 13F AVISTA COM 05379B107 78,644 12,509 18.91 3,145 13.78 0.0152
2016-11-04 2016-09-30 13F AVISTA COM 05379B107 66,135 5,176 8.49 2,764 1.21 0.0140
2016-08-11 2016-06-30 13F AVISTA COM 05379B107 60,959 -1,025 -1.65 2,731 8.07 0.0164
2016-05-10 2016-03-31 13F/A-1 AVISTA COM 05379B107 61,984 6,671 12.06 2,527 29.13 0.0157
2016-02-03 2015-12-31 13F AVISTA COM 05379B107 55,313 5,680 11.44 1,957 18.53 0.0119
2015-11-02 2015-09-30 13F/A-1 AVISTA COM 05379B107 49,633 6,000 13.75 1,651 23.39 0.0152
2015-10-30 2015-09-30 13F AVISTA COM 05379B107 49,633 1,651
2015-08-07 2015-06-30 13F/A-1 AVISTA COM 05379B107 43,633 1,241 2.93 1,338 -7.66 0.0121
2015-08-04 2015-06-30 13F AVISTA COM 05379B107 43,633 1,241 1,338 0.0121
2015-05-14 2015-03-31 13F/A-1 AVISTA COM 05379B107 42,392 -5,028 -10.60 1,449 -13.54 0.0126
2015-05-01 2015-03-31 13F AVIS BUDGET GROUP PUT 05379B107 42,392 42,392 1,449 0.0126
2015-02-10 2014-12-31 13F AVISTA COM 05379B107 47,420 47,420 1,676 0.0148
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
(%)
2015-05-01 2015-03-31 13F AVIS BUDGET GROUP PUT 42,392 1,449 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.