Phillips 66
US ˙ NYSE ˙ US7185461040

SecurityPSX / Phillips 66
InstitutionVestmark Advisory Solutions, Inc.
Latest Disclosed Ownership13,627 shares
Latest Disclosed Value $ 2,482,798
Vestmark Advisory Solutions, Inc. reports 29.66% increase in ownership of PSX / Phillips 66

On May 15, 2026 - Vestmark Advisory Solutions, Inc. filed a 13F-HR form disclosing ownership of 13,627 shares of Phillips 66 (US:PSX) valued at $2,482,567 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 10,510 shares of Phillips 66. This represents a change in shares of 29.66% during the quarter. The current value of the position is $2,516,634 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)
2026-05-15 2026-03-31 13F PHILLIPS 66 COM 718546104 13,627 3,117 29.66 2,483 83.04 0.0171
2026-02-06 2025-12-31 13F PHILLIPS 66 COM 718546104 10,510 2,480 30.88 1,356 24.18 0.0183
2025-11-10 2025-09-30 13F PHILLIPS 66 COM 718546104 8,030 5,820 263.35 1,092 315.21 0.0208
2025-08-06 2025-06-30 13F PHILLIPS 66 COM 718546104 2,210 -13,006 -85.48 264 -86.00 0.0038
2025-05-13 2025-03-31 13F PHILLIPS 66 COM 718546104 15,216 5,967 64.52 1,879 78.35 0.0484
2025-02-06 2024-12-31 13F PHILLIPS 66 COM 718546104 9,249 -50 -0.54 1,054 -13.83 0.0363
2024-11-14 2024-09-30 13F PHILLIPS 66 COM 718546104 9,299 -55 -0.59 1,222 -7.42 0.0455
2024-08-12 2024-06-30 13F PHILLIPS 66 COM 718546104 9,354 -26 -0.28 1,321 -13.84 0.0551
2024-05-15 2024-03-31 13F PHILLIPS 66 COM 718546104 9,380 977 11.63 1,532 37.03 0.0660
2024-02-06 2023-12-31 13F PHILLIPS 66 COM 718546104 8,403 -555 -6.20 1,119 3.90 0.0568
2023-11-06 2023-09-30 13F PHILLIPS 66 COM 718546104 8,958 -3,642 -28.90 1,076 -10.41 0.0782
2023-08-07 2023-06-30 13F PHILLIPS 66 COM 718546104 12,600 5,322 73.12 1,202 62.96 0.0458
2023-05-09 2023-03-31 13F PHILLIPS 66 COM 718546104 7,278 -575 -7.32 738 -9.79 0.0320
2023-01-20 2022-12-31 13F PHILLIPS 66 COM 718546104 7,853 2,603 49.58 817 92.69 0.0398
2022-11-03 2022-09-30 13F PHILLIPS 66 COM 718546104 5,250 865 19.73 424 17.78 0.0236
2022-08-04 2022-06-30 13F PHILLIPS 66 COM 718546104 4,385 1,187 37.12 360 30.43 0.0206
2022-04-27 2022-03-31 13F PHILLIPS 66 COM 718546104 3,198 188 6.25 276 26.61 0.0156
2022-01-31 2021-12-31 13F PHILLIPS 66 COM 718546104 3,010 -897 -22.96 218 -20.44 0.0123
2021-11-15 2021-09-30 13F PHILLIPS 66 COM 718546104 3,907 -408 -9.46 274 -25.95 0.0186
2021-08-09 2021-06-30 13F PHILLIPS 66 COM 718546104 4,315 551 14.64 370 20.52 0.0263
2021-05-10 2021-03-31 13F PHILLIPS 66 COM 718546104 3,764 70 1.89 307 18.99 0.0272
2021-02-04 2020-12-31 13F PHILLIPS 66 COM 718546104 3,694 3,694 258 0.0290
2020-10-19 2020-09-30 13F PHILLIPS 66 COM 718546104 0 -2,831 -100.00 0 -100.00
2020-08-13 2020-06-30 13F PHILLIPS 66 COM 718546104 2,831 -183 -6.07 204 -33.98 0.0316
2019-11-05 2019-09-30 13F PHILLIPS 66 COM 718546104 3,014 -2,443 -44.77 309 -39.41 0.0501
2019-08-20 2019-06-30 13F PHILLIPS 66 COM 718546104 5,457 -4,523 -45.32 510 -46.32 0.0873
2019-05-14 2019-03-31 13F PHILLIPS 66 COM 718546104 9,980 9,980 950 0.1694
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.