Unitil Corporation
US ˙ NYSE ˙ US9132591077

SecurityUTL / Unitil Corporation
InstitutionSei Investments Co
Latest Disclosed Ownership77,278 shares
Latest Disclosed Value $ 3,743,379
Sei Investments Co ownership in UTL / Unitil Corporation

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 77,278 shares of Unitil Corporation (US:UTL) valued at $3,743,346 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 95,571 shares of Unitil Corporation. This represents a change in shares of -19.14% during the quarter. The current value of the position is $3,773,485 USD.

Sei Investments Co has a history of taking positions in derivatives of the underlying security (UTL) 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.

UTL / Unitil 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 UNITIL COM 913259107 77,278 -18,293 -19.14 3,743 -18.17 0.0037
2025-11-13 2025-09-30 13F UNITIL COM 913259107 95,571 5,324 5.90 4,574 -2.80 0.0049
2025-08-14 2025-06-30 13F UNITIL COM 913259107 90,247 -2,668 -2.87 4,706 -12.20 0.0055
2025-05-14 2025-03-31 13F/A-1 UNITIL COM 913259107 92,915 -9,995 -9.71 5,360 -3.87 0.0069
2025-05-13 2025-03-31 13F UNITIL COM 913259107 102,987 77 5,581 0.0061
2025-02-11 2024-12-31 13F UNITIL COM 913259107 102,910 -2,454 -2.33 5,577 -12.63 0.0072
2024-11-12 2024-09-30 13F UNITIL COM 913259107 105,364 3,254 3.19 6,383 20.69 0.0083
2024-08-13 2024-06-30 13F UNITIL COM 913259107 102,110 -3,478 -3.29 5,288 -4.32 0.0075
2024-05-07 2024-03-31 13F UNITIL COM 913259107 105,588 -5,992 -5.37 5,528 -5.76 0.0081
2024-02-14 2023-12-31 13F UNITIL COM 913259107 111,580 81 0.07 5,866 23.16 0.0094
2023-11-14 2023-09-30 13F UNITIL COM 913259107 111,499 -9,914 -8.17 4,762 -22.64 0.0086
2023-08-11 2023-06-30 13F UNITIL COM 913259107 121,413 -992 -0.81 6,157 -11.82 0.0107
2023-05-12 2023-03-31 13F UNITIL COM 913259107 122,405 3,033 2.54 6,982 13.88 0.0130
2023-02-10 2022-12-31 13F UNITIL COM 913259107 119,372 -590 -0.49 6,131 10.01 0.0136
2022-11-14 2022-09-30 13F UNITIL COM 913259107 119,962 -6,727 -5.31 5,572 -25.10 0.0124
2022-08-15 2022-06-30 13F UNITIL COM 913259107 126,689 38,540 43.72 7,439 69.18 0.0161
2022-05-13 2022-03-31 13F UNITIL COM 913259107 88,149 0 0.00 4,397 8.46 0.0088
2022-02-14 2021-12-31 13F UNITIL COM 913259107 88,149 -13,209 -13.03 4,054 -6.50 0.0076
2021-11-12 2021-09-30 13F UNITIL COM 913259107 101,358 -6,098 -5.67 4,336 -23.82 0.0091
2021-08-06 2021-06-30 13F UNITIL COM 913259107 107,456 347 0.32 5,692 16.31 0.0126
2021-05-12 2021-03-31 13F UNITIL COM 913259107 107,109 -7,804 -6.79 4,894 -3.79 0.0123
2021-02-08 2020-12-31 13F UNITIL COM 913259107 114,913 11,454 11.07 5,087 27.24 0.0132
2020-12-04 2020-09-30 13F/A-1 UNITIL COM 913259107 103,459 2,929 2.91 3,998 -11.27 0.0116
2020-11-06 2020-09-30 13F UNITIL COM 913259107 114,470 13,940 4,423 10,649.6006
2020-08-17 2020-06-30 13F/A-1 UNITIL COM 913259107 100,530 -6,748 -6.29 4,506 -19.72 0.0140
2020-08-11 2020-06-30 13F UNITIL COM 913259107 100,007 -7,271 6,148 16,676.7773
2020-05-14 2020-03-31 13F UNITIL COM 913259107 107,278 -3,773 -3.40 5,613 -18.24 0.0206
2020-02-06 2019-12-31 13F UNITIL COM 913259107 111,051 5,824 5.53 6,865 2.83 0.0205
2019-11-12 2019-09-30 13F UNITIL COM 913259107 105,227 4,480 4.45 6,676 10.64 0.0171
2019-08-14 2019-06-30 13F UNITIL COM 913259107 100,747 7,085 7.56 6,034 18.94 0.0197
2019-05-15 2019-03-31 13F UNITIL COM 913259107 93,662 23,858 34.18 5,073 42.78 0.0170
2019-02-13 2018-12-31 13F UNITIL COM 913259107 69,804 -13 -0.02 3,553 -0.03 0.0126
2018-11-08 2018-09-30 13F UNITIL COM 913259107 69,817 5,457 8.48 3,554 8.19 0.0129
2018-08-03 2018-06-30 13F UNITIL COM 913259107 64,360 10,297 19.05 3,285 30.93 0.0112
2018-05-11 2018-03-31 13F UNITIL COM 913259107 54,063 12,078 28.77 2,509 30.95 0.0096
2018-02-08 2017-12-31 13F UNITIL COM 913259107 41,985 13,685 48.36 1,916 36.86 0.0067
2017-11-06 2017-09-30 13F UNITIL COM 913259107 28,300 2,849 11.19 1,400 13.91 0.0050
2017-07-31 2017-06-30 13F UNITIL COM 913259107 25,451 4,170 19.59 1,229 28.29 0.0049
2017-05-05 2017-03-31 13F UNITIL COM 913259107 21,281 11,304 113.30 958 111.48 0.0042
2017-02-02 2016-12-31 13F UNITIL COM 913259107 9,977 -33 -0.33 453 15.86 0.0022
2016-11-04 2016-09-30 13F UNITIL COM 913259107 10,010 2,229 28.65 391 17.77 0.0020
2016-08-11 2016-06-30 13F UNITIL COM 913259107 7,781 606 8.45 332 8.85 0.0020
2016-05-10 2016-03-31 13F/A-1 UNITIL COM 913259107 7,175 -227 -3.07 305 14.66 0.0019
2016-02-03 2015-12-31 13F UNITIL COM 913259107 7,402 1,080 17.08 266 13.68 0.0016
2015-11-02 2015-09-30 13F/A-1 UNITIL COM 913259107 6,322 22 0.35 234 12.50 0.0021
2015-10-30 2015-09-30 13F UNITIL COM 913259107 6,322 234
2015-08-07 2015-06-30 13F/A-1 UNITEDHEALTH GROUP PUT 913259107 0 -5,121 -100.00 0 -100.00
2015-08-07 2015-06-30 13F/A-1 UNITIL COM 913259107 6,300 1,179 23.02 208 16.85 0.0019
2015-08-04 2015-06-30 13F UNITIL COM 913259107 6,300 1,179 208 0.0019
2015-05-14 2015-03-31 13F/A-1 UNITIL COM 913259107 5,121 1,550 43.41 178 34.85 0.0015
2015-05-01 2015-03-31 13F UNITEDHEALTH GROUP PUT 913259107 5,121 5,121 178 0.0015
2015-02-10 2014-12-31 13F UNITIL COM 913259107 3,571 3,571 132 0.0012
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
(%)
2015-08-07 2015-06-30 13F/A UNITEDHEALTH GROUP PUT 0 -100.00 0 -100.00 n/a n/a n/a
2015-05-01 2015-03-31 13F UNITEDHEALTH GROUP PUT 5,121 178 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.