Phillips 66
MX ˙ BMV ˙ US7185461040
SecurityMX:PSX / Phillips 66
InstitutionHolocene Advisors, LP
Latest Disclosed Ownership382,100 shares
Latest Disclosed Value $ 69,610,978
Holocene Advisors, LP reports 72.18% decrease in ownership of PSX / Phillips 66

On May 15, 2026 - Holocene Advisors, LP filed a 13F-HR form disclosing ownership of 382,100 shares of Phillips 66 (MX:PSX) valued at $69,610,978 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,373,650 shares of Phillips 66. This represents a change in shares of -72.18% 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)
2026-05-15 2026-03-31 13F PHILLIPS 66 COM 718546104 382,100 -991,550 -72.18 69,611 -60.73 0.1679
2026-02-17 2025-12-31 13F PHILLIPS 66 COM 718546104 1,373,650 374,650 37.50 177,256 30.45 0.3722
2025-11-14 2025-09-30 13F PHILLIPS 66 COM 718546104 999,000 287,401 40.39 135,884 60.06 0.3096
2025-08-14 2025-06-30 13F PHILLIPS 66 COM 718546104 711,599 683,507 2,433.10 84,894 2,347.90 0.2072
2025-05-15 2025-03-31 13F PHILLIPS 66 COM 718546104 28,092 -506,201 -94.74 3,469 -94.30 0.0101
2025-02-14 2024-12-31 13F PHILLIPS 66 COM 718546104 534,293 485,708 999.71 60,872 853.21 0.1949
2024-11-14 2024-09-30 13F PHILLIPS 66 COM 718546104 48,585 48,585 6,386 0.0258
2024-05-15 2024-03-31 13F PHILLIPS 66 COM 718546104 0 -297,441 -100.00 0 -100.00
2024-02-14 2023-12-31 13F PHILLIPS 66 COM 718546104 297,441 297,441 39,601 0.1543
2023-11-14 2023-09-30 13F PHILLIPS 66 COM 718546104 0 -638,332 -100.00 0 -100.00
2023-08-14 2023-06-30 13F PHILLIPS 66 COM 718546104 638,332 114,835 21.94 60,884 14.72 0.2598
2023-05-15 2023-03-31 13F PHILLIPS 66 COM 718546104 523,497 -484,513 -48.07 53,072 -49.41 0.2609
2023-02-14 2022-12-31 13F PHILLIPS 66 COM 718546104 1,008,010 944,875 1,496.59 104,914 1,958.73 0.6399
2022-11-14 2022-09-30 13F PHILLIPS 66 COM 718546104 63,135 63,135 5,096 0.0326
2020-11-16 2020-09-30 13F PHILLIPS 66 COM 718546104 0 -243,773 -100.00 0 -100.00
2020-08-14 2020-06-30 13F PHILLIPS 66 COM 718546104 243,773 -81,924 -25.15 17,527 0.30 0.1536
2020-05-15 2020-03-31 13F PHILLIPS 66 COM 718546104 325,697 92,127 39.44 17,474 -32.85 0.1876
2020-02-14 2019-12-31 13F PHILLIPS 66 COM 718546104 233,570 233,570 26,022 0.2332
2019-11-14 2019-09-30 13F PHILLIPS 66 COM 718546104 0 -109,370 -100.00 0 -100.00
2019-08-14 2019-06-30 13F PHILLIPS 66 COM 718546104 109,370 55,398 102.64 10,230 99.14 0.1305
2019-05-15 2019-03-31 13F PHILLIPS 66 COM 718546104 53,972 -96,953 -64.24 5,137 -60.49 0.0786
2019-02-14 2018-12-31 13F PHILLIPS 66 COM 718546104 150,925 142,648 1,723.43 13,002 1,293.57 0.2096
2018-11-14 2018-09-30 13F PHILLIPS 66 COM 718546104 8,277 8,277 933 0.0150
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.