Phillips 66
US ˙ NYSE ˙ US7185461040

SecurityPSX / Phillips 66
InstitutionMather Group, Llc.
Latest Disclosed Ownership4,806 shares
Latest Disclosed Value $ 875,630
Mather Group, Llc. reports 9.92% decrease in ownership of PSX / Phillips 66

On April 13, 2026 - Mather Group, Llc. filed a 13F-HR form disclosing ownership of 4,806 shares of Phillips 66 (US:PSX) valued at $875,557 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 13, 2026 disclosing 5,335 shares of Phillips 66. This represents a change in shares of -9.92% during the quarter. The current value of the position is $887,572 USD.

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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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)
2026-04-13 2026-03-31 13F PHILLIPS 66 COM 718546104 4,806 -529 -9.92 876 27.18 0.0087
2026-01-13 2025-12-31 13F PHILLIPS 66 COM 718546104 5,335 -1,576 -22.80 688 -26.73 0.0071
2025-10-21 2025-09-30 13F PHILLIPS 66 COM 718546104 6,911 -65 -0.93 940 12.86 0.0095
2025-07-15 2025-06-30 13F PHILLIPS 66 COM 718546104 6,976 734 11.76 832 8.05 0.0089
2025-04-25 2025-03-31 13F PHILLIPS 66 COM 718546104 6,242 -2,531 -28.85 771 -22.92 0.0089
2025-01-27 2024-12-31 13F PHILLIPS 66 COM 718546104 8,773 -41 -0.47 999 -13.73 0.0130
2024-10-07 2024-09-30 13F PHILLIPS 66 COM 718546104 8,814 -14,181 -61.67 1,159 -69.17 0.0149
2024-07-09 2024-06-30 13F PHILLIPS 66 COM 718546104 22,995 13,551 143.49 3,756 198.81 0.0463
2024-04-09 2024-03-31 13F PHILLIPS 66 COM 718546104 9,444 -5,787 -37.99 1,257 -37.99 0.0198
2024-02-05 2023-12-31 13F PHILLIPS 66 COM 718546104 15,231 -2,459 -13.90 2,028 -4.61 0.0318
2023-11-13 2023-09-30 13F PHILLIPS 66 COM 718546104 17,690 -1,209 -6.40 2,125 17.92 0.0377
2023-08-08 2023-06-30 13F PHILLIPS 66 COM 718546104 18,899 280 1.50 1,803 -4.50 0.0287
2023-05-09 2023-03-31 13F PHILLIPS 66 COM 718546104 18,619 -1,123 -5.69 1,888 -8.13 0.0335
2023-03-10 2022-12-31 13F PHILLIPS 66 COM 718546104 19,742 -1,900 -8.78 2,055 17.57 0.0396
2022-11-15 2022-09-30 13F PHILLIPS 66 COM 718546104 21,642 2,003 10.20 1,747 8.51 0.0376
2022-08-16 2022-06-30 13F PHILLIPS 66 COM 718546104 19,639 5,977 43.75 1,610 36.44 0.0368
2022-05-13 2022-03-31 13F PHILLIPS 66 COM 718546104 13,662 486 3.69 1,180 23.56 0.0233
2022-02-15 2021-12-31 13F PHILLIPS 66 COM 718546104 13,176 -493 -3.61 955 -0.21 0.0187
2021-11-04 2021-09-30 13F PHILLIPS 66 COM 718546104 13,669 7,711 129.42 957 87.28 0.0230
2021-08-13 2021-06-30 13F PHILLIPS 66 COM 718546104 5,958 63 1.07 511 6.24 0.0129
2021-05-14 2021-03-31 13F PHILLIPS 66 COM 718546104 5,895 -66 -1.11 481 15.35 0.0136
2021-02-12 2020-12-31 13F PHILLIPS 66 COM 718546104 5,961 -646 -9.78 417 21.57 0.0136
2020-11-13 2020-09-30 13F PHILLIPS 66 COM 718546104 6,607 6,607 343 0.0135
2020-05-14 2020-03-31 13F PHILLIPS 66 COM 718546104 0 -2,778 -100.00 0 -100.00
2020-02-14 2019-12-31 13F PHILLIPS 66 COM 718546104 2,778 2,778 309 0.0194
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.