Phillips 66
CH ˙ SWX ˙ US7185461040
SecurityCH:PSX / Phillips 66
InstitutionWelch & Forbes Llc
Latest Disclosed Ownership6,707 shares
Latest Disclosed Value $ 1,221,883
Welch & Forbes Llc reports 3.44% decrease in ownership of PSX / Phillips 66

On May 1, 2026 - Welch & Forbes Llc filed a 13F-HR form disclosing ownership of 6,707 shares of Phillips 66 (CH:PSX) valued at $1,221,883 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 6,946 shares of Phillips 66. This represents a change in shares of -3.44% during the quarter.

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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-01 2026-03-31 13F PHILLIPS 66 COM 718546104 6,707 -239 -3.44 1,222 36.27 0.0158
2026-02-10 2025-12-31 13F PHILLIPS 66 COM 718546104 6,946 -177 -2.48 896 -7.44 0.0109
2025-11-04 2025-09-30 13F PHILLIPS 66 COM 718546104 7,123 76 1.08 969 15.24 0.0117
2025-08-05 2025-06-30 13F PHILLIPS 66 COM 718546104 7,047 250 3.68 841 0.12 0.0105
2025-05-02 2025-03-31 13F PHILLIPS 66 COM 718546104 6,797 11 0.16 839 8.54 0.0110
2025-02-07 2024-12-31 13F PHILLIPS 66 COM 718546104 6,786 75 1.12 773 -12.36 0.0099
2024-11-04 2024-09-30 13F PHILLIPS 66 COM 718546104 6,711 161 2.46 882 1.03 0.0112
2024-08-02 2024-06-30 13F PHILLIPS 66 COM 718546104 6,550 -150 -2.24 874 -20.20 0.0117
2024-05-03 2024-03-31 13F PHILLIPS 66 COM 718546104 6,700 75 1.13 1,094 24.04 0.0150
2024-02-06 2023-12-31 13F PHILLIPS 66 COM 718546104 6,625 -6,449 -49.33 882 -43.82 0.0133
2023-11-03 2023-09-30 13F PHILLIPS 66 COM 718546104 13,074 25 0.19 1,571 26.21 0.0260
2023-07-28 2023-06-30 13F PHILLIPS 66 COM 718546104 13,049 -72 -0.55 1,245 -6.47 0.0196
2023-04-14 2023-03-31 13F PHILLIPS 66 COM 718546104 13,121 -28 -0.21 1,330 -2.78 0.0225
2023-02-02 2022-12-31 13F PHILLIPS 66 COM 718546104 13,149 318 2.48 1,369 32.05 0.0245
2022-10-31 2022-09-30 13F PHILLIPS 66 COM 718546104 12,831 0 0.00 1,036 -1.52 0.0202
2022-07-22 2022-06-30 13F PHILLIPS 66 COM 718546104 12,831 85 0.67 1,052 -4.45 0.0192
2022-04-25 2022-03-31 13F PHILLIPS 66 COM 718546104 12,746 0 0.00 1,101 19.28 0.0173
2022-01-19 2021-12-31 13F PHILLIPS 66 COM 718546104 12,746 5,497 75.83 923 81.69 0.0138
2021-10-13 2021-09-30 13F PHILLIPS 66 COM 718546104 7,249 203 2.88 508 -15.89 0.0084
2021-07-22 2021-06-30 13F PHILLIPS 66 COM 718546104 7,046 353 5.27 604 10.83 0.0102
2021-04-14 2021-03-31 13F PHILLIPS 66 COM 718546104 6,693 -722 -9.74 545 5.21 0.0101
2021-01-20 2020-12-31 13F PHILLIPS 66 COM 718546104 7,415 0 0.00 518 34.55 0.0101
2020-10-23 2020-09-30 13F PHILLIPS 66 COM 718546104 7,415 -15 -0.20 385 -27.90 0.0083
2020-07-15 2020-06-30 13F PHILLIPS 66 COM 718546104 7,430 -2,675 -26.47 534 -1.48 0.0125
2020-04-17 2020-03-31 13F PHILLIPS 66 COM 718546104 10,105 -39 -0.38 542 -52.04 0.0151
2020-01-17 2019-12-31 13F PHILLIPS 66 COM 718546104 10,144 0 0.00 1,130 8.76 0.0251
2019-10-11 2019-09-30 13F PHILLIPS 66 COM 718546104 10,144 -255 -2.45 1,039 6.78 0.0248
2019-07-12 2019-06-30 13F PHILLIPS 66 COM 718546104 10,399 -165 -1.56 973 -3.18 0.0237
2019-04-29 2019-03-31 13F PHILLIPS 66 COM 718546104 10,564 -704 -6.25 1,005 3.61 0.0252
2019-02-05 2018-12-31 13F PHILLIPS 66 COM 718546104 11,268 230 2.08 970 -22.03 0.0273
2018-10-17 2018-09-30 13F PHILLIPS 66 COM 718546104 11,038 -2,286 -17.16 1,244 -16.90 0.0297
2018-07-16 2018-06-30 13F PHILLIPS 66 COM 718546104 13,324 508 3.96 1,497 21.71 0.0387
2018-04-12 2018-03-31 13F PHILLIPS 66 COM 718546104 12,816 -492 -3.70 1,230 -8.62 0.0317
2018-01-26 2017-12-31 13F PHILLIPS 66 COM 718546104 13,308 209 1.60 1,346 12.17 0.0359
2017-11-13 2017-09-30 13F PHILLIPS 66 COM 718546104 13,099 315 2.46 1,200 13.53 0.0316
2017-07-31 2017-06-30 13F PHILLIPS 66 COM 718546104 12,784 3 0.02 1,057 4.34 0.0295
2017-07-31 2017-03-31 13F/A-1 PHILLIPS 66 COM 718546104 12,781 -1,434 -10.09 1,013 -17.51 0.0290
2017-04-27 2017-03-31 13F PHILLIPS 66 COM 718546104 12,752 1,010
2017-02-07 2016-12-31 13F PHILLIPS 66 COM 718546104 14,215 1,570 12.42 1,228 20.51 0.0367
2016-11-02 2016-09-30 13F PHILLIPS 66 COM 718546104 12,645 165 1.32 1,019 2.93 0.0352
2016-08-02 2016-06-30 13F PHILLIPS 66 COM 718546104 12,480 -872 -6.53 990 -14.36 0.0302
2016-05-05 2016-03-31 13F PHILLIPS 66 COM 718546104 13,352 -1,088 -7.53 1,156 -2.12 0.0360
2016-01-27 2015-12-31 13F PHILLIPS 66 COM 718546104 14,440 260 1.83 1,181 8.35 0.0379
2015-11-05 2015-09-30 13F PHILLIPS 66 COM 718546104 14,180 -686 -4.61 1,090 -9.02 0.0364
2015-08-11 2015-06-30 13F PHILLIPS 66 COM 718546104 14,866 0 0.00 1,198 2.57 0.0373
2015-04-30 2015-03-31 13F PHILLIPS 66 COM 718546104 14,866 14,866 0.00 1,168 0.0351
2015-01-27 2014-12-31 13F PHILLIPS 66 COM 718546104 0 -16,118 -100.00 0 -100.00
2014-10-27 2014-09-30 13F PHILLIPS 66 COM 718546104 16,118 0 0.00 1,311 1.08 0.0400
2014-07-31 2014-06-30 13F PHILLIPS 66 COM 718546104 16,118 80 0.50 1,297 5.02 0.0409
2014-05-01 2014-03-31 13F PHILLIPS 66 COM 718546104 16,038 -843 -4.99 1,235 -5.15 0.0391
2014-01-17 2013-12-31 13F PHILLIPS 66 COM 718546104 16,881 591 3.63 1,302 38.22 0.0412
2013-10-31 2013-09-30 13F PHILLIPS 66 COM 718546104 16,290 176 1.09 942 -0.84 0.0317
2013-08-08 2013-06-30 13F PHILLIPS 66 COM 718546104 16,114 16,114 950 0.0340
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.