Phillips 66 (PSX) Stock Concentration Calculator

Calculator · free · no signup · PSX

Quantify Phillips 66 concentration risk. Drawdown impact at 30 / 50 / 70%, with the tax-aware trade-off between selling down and hedging.

Beta · invite-only · AlphaLatitude Inc. · Free Tools

Your inputs

Adjust — results update instantly.

Position & portfolio

Default. Adjust to test.
35%
Default. Adjust to test.
20%
10%

Tax

67%
Highly concentratedLong-term
If 30% drop
−$150,000
If 50% drop
−$250,000
If 70% drop
−$350,000

Most fee-only advisors target ≤10% in any single name. You're at 67%.

Estimates only. Not financial advice.

Most sensitive to: Expected market return (±10% on this input swings best-plan wealth by ±$190,508).

Cost of fully de-concentrating

All three plans sell to 0% (no hedge).

Tax
Wealth (3y)$956,485
+$33,417 vs.

Tax
Wealth (3y)$994,174
+$71,106 vs.

Tax
Wealth (3y)$1.04M
+$112,490 vs.

Sensitivity. If your expected position return drops below 19.6%/yr, lump-sum (sell everything today) beats every spread plan above.

Have multiple RSU vest lots? The RSU Lot Order Calculator picks which lots to sell first, and on which dates, to divest at the lowest computed tax.

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Toggle below — chart updates live. Sell buttons show the slice.
Sell over 1 yearSell over 2 yearsSell over 3 yearsCustom
$712,500$815,995$919,489$1,022,984$1,126,478Yr 0Yr 1Yr 2Yr 3
Year 1
Year 2
Year 3
Tax$200,753
Hedge cost$37,676
Wealth at Y3$1,046,371
Vs. best fixed plan+$10,813

Tech / Software single names hit a 50%+ peak-to-trough drawdown in roughly 1 of every 5 rolling 3-year windows over 2014–2024. Even mega-caps aren’t exempt.

Tax brackets: 2026 · Estimates only — not financial advice.

Estate note. Heirs receive a stepped-up basis at death (§1014), eliminating built-in gain on inherited shares. Older holders who plan to bequeath rather than sell may rationally never de-concentrate.

You sized one position's risk. The beta integrates hedging, sell-down, and tax timing into one optimized plan.

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Related calculators: Protect Your Stock Calculator · RSU Lot Order Calculator · Equity Funding Plan Calculator

About Phillips 66

Phillips 66 (PSX) is a public Energy company, incorporated in Delaware and headquartered in Houston, TX.

Last close: $243.49 per share (as of 2026-08-19).

Equity grants at Phillips 66 typically include restricted stock units (RSUs).

The Phillips 66 Company is an American multinational energy company headquartered in Westchase, Houston, Texas. Its name, dating back to 1927 as a trademark of the Phillips Petroleum Company, assisted in establishing the newly reconfigured Phillips 66. The company today was formed ten years after Phillips merged with Conoco to form ConocoPhillips. The merged company spun off its refining, chemical, and retail assets – known in the oil industry as downstream operations – into a new company bearing the Phillips 66 name. It began trading on the New York Stock Exchange on May 1, 2012, under the ticker PSX.

Source: Wikipedia (CC BY-SA 4.0)

ConocoPhillips separated its refining, marketing, and midstream businesses in 2012 to create the company, which refines crude and markets fuel under the Phillips 66, Conoco, and 76 brands. Refining margins are volatile, so the chemicals joint venture with Chevron and the midstream segment are held partly to dampen that swing. Renewable fuel conversion at existing refineries responds to policy incentives. Activist pressure has centered on whether the midstream assets should be separated. Headquarters are in Houston.

Sources: sec.gov · en.wikipedia.org

OptionsAhoy is an independent tool and is not affiliated with, endorsed by, or sponsored by Phillips 66.

If a meaningful share of your net worth sits in PSX, concentration risk is the question. This calculator quantifies drawdown impact at 30 / 50 / 70%, and the trade-off between selling down (tax cost now) versus hedging (option premium drag), auto-filled with PSX's option-implied volatility.

Example: 5,000 PSX shares at $243.49 is a $1,217,450 position. A 30% drawdown costs $365,235; a 50% drawdown costs $608,725; a 70% drawdown costs $852,215. The calculator quantifies the trade-off between selling down (immediate capital-gains tax) and hedging (option premium drag) using PSX's option-implied volatility and your cost basis.

All Phillips 66 tools → · Use the generic Stock Concentration Calculator for any company. Diversifying multiple RSU lots? See the lot-by-lot sell order →

Phillips 66 equity questions

How much PSX stock is too much?
There is no single threshold, but the larger the share of your net worth in one stock, the more a single bad year can set back your plans. The calculator above quantifies the drawdown impact at 30, 50, and 70 percent for your PSX position and weighs selling down (which triggers capital-gains tax now) against hedging (which costs option premium).
Does Phillips 66 grant ISOs, NSOs, or RSUs?
Equity compensation at Phillips 66 typically takes the form of restricted stock units (RSUs). Restricted stock units are taxed as ordinary income when they vest.
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OptionsAhoy plans your Phillips 66 equity alongside hedging, vesting, and de-concentration, across bullish, neutral, and bearish market scenarios. Free during beta.

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