Phillips 66
MX ˙ BMV ˙ US7185461040
SecurityMX:PSX / Phillips 66
InstitutionSei Investments Co
Latest Disclosed Ownership376,371 shares
Latest Disclosed Value $ 48,569,503
Sei Investments Co ownership in PSX / Phillips 66

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 376,371 shares of Phillips 66 (MX:PSX) valued at $48,569,503 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 181,660 shares of Phillips 66. This represents a change in shares of 107.18% during the quarter.

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

MX:PSX / Phillips 66 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 PHILLIPS 66 COM 718546104 376,371 194,711 107.18 48,570 96.57 0.0479
2025-11-13 2025-09-30 13F PHILLIPS 66 COM 718546104 181,660 24,205 15.37 24,708 31.52 0.0266
2025-08-14 2025-06-30 13F PHILLIPS 66 COM 718546104 157,455 18,625 13.42 18,788 9.60 0.0218
2025-05-14 2025-03-31 13F/A-1 PHILLIPS 66 COM 718546104 138,830 21,674 18.50 17,142 28.42 0.0221
2025-05-13 2025-03-31 13F PHILLIPS 66 COM 718546104 122,757 5,601 14,445 0.0157
2025-02-11 2024-12-31 13F PHILLIPS 66 COM 718546104 117,156 -7,434 -5.97 13,349 -18.50 0.0171
2024-11-12 2024-09-30 13F PHILLIPS 66 COM 718546104 124,590 14,715 13.39 16,377 5.58 0.0213
2024-08-13 2024-06-30 13F PHILLIPS 66 COM 718546104 109,875 -4,942 -4.30 15,511 -17.29 0.0220
2024-05-07 2024-03-31 13F PHILLIPS 66 COM 718546104 114,817 -271,842 -70.31 18,754 -63.57 0.0275
2024-02-14 2023-12-31 13F PHILLIPS 66 COM 718546104 386,659 8,954 2.37 51,481 13.45 0.0826
2023-11-14 2023-09-30 13F PHILLIPS 66 COM 718546104 377,705 -22,035 -5.51 45,378 19.02 0.0815
2023-08-11 2023-06-30 13F PHILLIPS 66 COM 718546104 399,740 -14,112 -3.41 38,127 -9.13 0.0665
2023-05-12 2023-03-31 13F PHILLIPS 66 COM 718546104 413,852 15,248 3.83 41,957 1.13 0.0779
2023-02-10 2022-12-31 13F PHILLIPS 66 COM 718546104 398,604 -36,330 -8.35 41,487 18.16 0.0922
2022-11-14 2022-09-30 13F PHILLIPS 66 COM 718546104 434,934 -29,551 -6.36 35,109 -7.88 0.0783
2022-08-15 2022-06-30 13F PHILLIPS 66 COM 718546104 464,485 156,936 51.03 38,112 43.15 0.0823
2022-05-13 2022-03-31 13F PHILLIPS 66 COM 718546104 307,549 -5,388 -1.72 26,623 17.06 0.0535
2022-02-14 2021-12-31 13F PHILLIPS 66 COM 718546104 312,937 31,798 11.31 22,743 15.35 0.0427
2021-11-12 2021-09-30 13F PHILLIPS 66 COM 718546104 281,139 16,923 6.40 19,717 -13.09 0.0414
2021-08-06 2021-06-30 13F PHILLIPS 66 COM 718546104 264,216 17,787 7.22 22,687 13.91 0.0503
2021-05-12 2021-03-31 13F PHILLIPS 66 COM 718546104 246,429 46,748 23.41 19,917 42.39 0.0502
2021-02-08 2020-12-31 13F PHILLIPS 66 COM 718546104 199,681 -7,501 -3.62 13,988 29.70 0.0362
2020-12-04 2020-09-30 13F/A-1 PHILLIPS 66 COM 718546104 207,182 -39,886 -16.14 10,785 -39.45 0.0312
2020-11-06 2020-09-30 13F PHILLIPS 66 COM 718546104 217,770 -29,298 11,334 27,289.7520
2020-08-17 2020-06-30 13F/A-1 PHILLIPS 66 COM 718546104 247,068 -93,861 -27.53 17,813 -2.76 0.0553
2020-08-11 2020-06-30 13F PHILLIPS 66 COM 718546104 277,889 -63,040 28,201 76,496.7136
2020-05-14 2020-03-31 13F PHILLIPS 66 COM 718546104 340,929 35,237 11.53 18,318 -46.19 0.0673
2020-02-06 2019-12-31 13F PHILLIPS 66 COM 718546104 305,692 43,407 16.55 34,039 26.77 0.1015
2019-11-12 2019-09-30 13F PHILLIPS 66 COM 718546104 262,285 8,986 3.55 26,850 13.19 0.0687
2019-08-14 2019-06-30 13F PHILLIPS 66 COM 718546104 253,299 -37,592 -12.92 23,722 -14.31 0.0775
2019-05-15 2019-03-31 13F PHILLIPS 66 COM 718546104 290,891 129,944 80.74 27,682 57.00 0.0930
2019-02-13 2018-12-31 13F PHILLIPS 66 COM 718546104 160,947 9,846 6.52 17,632 3.93 0.0628
2018-11-08 2018-09-30 13F PHILLIPS 66 COM 718546104 151,101 -1,740 -1.14 16,966 -1.17 0.0615
2018-08-03 2018-06-30 13F PHILLIPS 66 COM 718546104 152,841 19,537 14.66 17,166 34.26 0.0583
2018-05-11 2018-03-31 13F PHILLIPS 66 COM 718546104 133,304 5,349 4.18 12,786 -1.21 0.0490
2018-02-08 2017-12-31 13F PHILLIPS 66 COM 718546104 127,955 -6,792 -5.04 12,942 4.84 0.0449
2017-11-06 2017-09-30 13F PHILLIPS 66 COM 718546104 134,747 2,287 1.73 12,344 12.70 0.0439
2017-07-31 2017-06-30 13F PHILLIPS 66 COM 718546104 132,460 -5,795 -4.19 10,953 0.00 0.0437
2017-05-05 2017-03-31 13F PHILLIPS 66 COM 718546104 138,255 -77,216 -35.84 10,953 -41.17 0.0480
2017-02-02 2016-12-31 13F PHILLIPS 66 COM 718546104 215,471 43,409 25.23 18,619 34.35 0.0902
2016-11-04 2016-09-30 13F PHILLIPS 66 COM 718546104 172,062 -78,674 -31.38 13,859 -30.33 0.0704
2016-08-11 2016-06-30 13F PHILLIPS 66 COM 718546104 250,736 14,966 6.35 19,893 -2.56 0.1193
2016-05-10 2016-03-31 13F/A-1 PHILLIPS 66 COM 718546104 235,770 -4,226 -1.76 20,415 3.99 0.1270
2016-02-03 2015-12-31 13F PHILLIPS 66 COM 718546104 239,996 90,644 60.69 19,632 71.08 0.1197
2015-11-02 2015-09-30 13F/A-1 PHILLIPS 66 COM 718546104 149,352 -16,059 -9.71 11,475 -13.89 0.1053
2015-10-30 2015-09-30 13F PHILLIPS 66 COM 718546104 149,352 11,477
2015-08-07 2015-06-30 13F/A-1 PHIBRO ANIMAL HEALTH PUT 718546104 0 -171,899 -100.00 0 -100.00
2015-08-07 2015-06-30 13F/A-1 PHILLIPS 66 COM 718546104 165,411 -6,488 -3.77 13,326 -1.35 0.1205
2015-08-04 2015-06-30 13F PHILLIPS 66 COM 718546104 165,411 -6,488 13,326 0.1205
2015-05-14 2015-03-31 13F/A-1 PHILLIPS 66 COM 718546104 171,899 -23,114 -11.85 13,508 -3.45 0.1173
2015-05-01 2015-03-31 13F PHIBRO ANIMAL HEALTH PUT 718546104 171,899 171,899 13,508 0.1173
2015-02-10 2014-12-31 13F PHILLIPS 66 COM 718546104 195,013 195,013 13,991 0.1237
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 PHIBRO ANIMAL HEALTH PUT 0 -100.00 0 -100.00 n/a n/a n/a
2015-05-01 2015-03-31 13F PHIBRO ANIMAL HEALTH PUT 171,899 13,508 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.