Phillips 66
CH ˙ SWX ˙ US7185461040
SecurityCH:PSX / Phillips 66
InstitutionRobertson Stephens Wealth Management, LLC
Latest Disclosed Ownership2,898 shares
Latest Disclosed Value $ 527,958
Robertson Stephens Wealth Management, LLC reports 4.51% decrease in ownership of PSX / Phillips 66

On April 28, 2026 - Robertson Stephens Wealth Management, LLC filed a 13F-HR form disclosing ownership of 2,898 shares of Phillips 66 (CH:PSX) valued at $527,958 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 3,035 shares of Phillips 66. This represents a change in shares of -4.51% 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.

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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)
2026-04-28 2026-03-31 13F PHILLIPS 66 COM 718546104 2,898 -137 -4.51 528 34.78 0.0148
2026-02-02 2025-12-31 13F PHILLIPS 66 COM 718546104 3,035 198 6.98 392 1.56 0.0102
2025-11-12 2025-09-30 13F PHILLIPS 66 COM 718546104 2,837 -579 -16.95 386 -5.41 0.0117
2025-07-24 2025-06-30 13F PHILLIPS 66 COM 718546104 3,416 40 1.18 408 -2.16 0.0130
2025-04-17 2025-03-31 13F PHILLIPS 66 COM 718546104 3,376 -516 -13.26 417 -6.09 0.0143
2025-01-27 2024-12-31 13F PHILLIPS 66 COM 718546104 3,892 -231 -5.60 443 -18.11 0.0157
2024-11-12 2024-09-30 13F PHILLIPS 66 COM 718546104 4,123 194 4.94 542 -2.35 0.0196
2024-08-13 2024-06-30 13F PHILLIPS 66 COM 718546104 3,929 -7 -0.18 555 -13.71 0.0279
2024-05-15 2024-03-31 13F PHILLIPS 66 COM 718546104 3,936 149 3.93 643 27.38 0.0341
2024-02-06 2023-12-31 13F PHILLIPS 66 COM 718546104 3,787 163 4.50 504 15.86 0.0306
2023-11-13 2023-09-30 13F PHILLIPS 66 COM 718546104 3,624 -142 -3.77 435 21.17 0.0294
2023-08-11 2023-06-30 13F PHILLIPS 66 COM 718546104 3,766 117 3.21 359 -2.71 0.0254
2023-05-11 2023-03-31 13F PHILLIPS 66 COM 718546104 3,649 371 11.32 370 8.21 0.0285
2023-02-14 2022-12-31 13F PHILLIPS 66 COM 718546104 3,278 -40 -1.21 341 27.72 0.0332
2022-11-14 2022-09-30 13F Phillips 66 COM 718546104 3,318 0 0.00 267 -1.84 0.0279
2022-08-12 2022-06-30 13F Phillips 66 COM 718546104 3,318 210 6.76 272 1.49 0.0257
2022-05-16 2022-03-31 13F Phillips 66 COM 718546104 3,108 3,108 268 0.0225
2021-11-10 2021-09-30 13F Phillips 66 COM 718546104 0 -3,160 -100.00 0 -100.00
2021-08-17 2021-06-30 13F Phillips 66 COM 718546104 3,160 3,160 271 0.0325
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.