Investing

Concentration unwind plan

Build a window-by-window schedule to reduce a concentrated employer-stock position to a target weight: highest-basis lots first, inside an annual realized-gain budget, using the trading windows and upcoming vests.

The position

Current share price

Total net worth (including the position)

Must exceed the position's value.

Target concentration

Of net worth, 0 to 100.

Annual realized-gain budget

Gross gains per calendar year before harvested losses.

Harvestable losses available

Applied to long-term gains first.

Price growth assumption

Per year, −50 to 50. Default flat, stated in the notes.

Windows and vests

Trading windows

Comma-separated dates (YYYY-MM-DD), in order. Defaults to the next eight quarter starts.

Plan as of

Holding periods and price growth are measured from this date.

Sell vests at vest

Shares sold at vest have basis equal to the vest price, so the gain is about zero and they never enter the position.

Tax profile and giving

Filing status

Taxable income (before these gains)

Sets the long-term rate zone and the ordinary rate for short-term gains.

AGI (for the charitable limit and NIIT)

Shares to donate (donor-advised fund)

Lowest-basis long-term lots first; not more than the shares held.

Windows to reach the target

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Loading tax parameters.

Concentration path

Schedule

Window	Price	Weight before	Shares sold	LT gain	ST gain	Losses used	Tax	Weight after

Show the math

Assumptions and limits