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// Setup & Preferences

Accounts, Currency, Fees, and P&L Settings

A handful of settings quietly reshape every number you see. Two in particular — the base currency and the option P&L basis — are display choices that change nothing stored.

7 min readUpdated

Most settings do what their label says. Two are worth reading properly, because they change every number on the screen while changing nothing that is stored: the base currency and the option P&L basis.

// 01 · accounts

Multiple accounts

Each account tracks its trades, positions, and results independently, so a brokerage account and a retirement account never blend into one number. You can keep three; the Add account button disappears when you reach the limit.

Settings that read “Account Preferences” on the settings page belong to whichever account is active at the time — switch accounts and the values switch with them.

The account picker at the top of the app decides what every page shows, and imports land in whichever account is selected. There is also an all-accounts overview, which groups by currency and totals nothing across a currency boundary — for the same reason the setting below applies no conversion.

// 02 · display

Base currency

This chooses the symbol every amount is displayed with. No conversion is applied. If you record a trade in one currency and switch the display to another, the number is unchanged and only its symbol moves.

// 03 · clocks

Timezone

Your timezone places trades on the time-of-day and weekday charts and on candlestick markers. It is auto-detected from your browser and can be changed.

It does not rewrite the times on your trades, and it doesn’t move anything on the P&L calendar — a trade keeps the wall clock it was recorded with. Chart sections that read hours offer a toggle between your local time and US market time.

// 04 · lots

Cost basis method

When you sell part of a stock position, this decides which shares you sold — and therefore what each sale realized.

MethodWhich shares a sale uses
Average CostEvery share carries the position's weighted average price, so a partial sale realizes the same per-share result whichever shares left.
First In, First Out (FIFO)The shares you bought earliest are sold first. The convention most brokers report by.
Last In, First Out (LIFO)The shares you bought most recently are sold first.

Changing the method changes nothing on its own. The setting has to be saved, and existing sells keep the result they were recorded with until you press Recalculate All Trades, which recomputes the realized result of every sell in the account under the new method. The button is offered only when the method you picked differs from the one in use.

// 05 · the big one

Option P&L % basis

Every option percentage has to divide by something, and there are two defensible choices. This setting picks which.

BasisDivides byReads as
CollateralWhat the position tied up.Return on the capital the trade actually required.
Trade ROIThe premium collected at open.How much of the premium you kept.

The choice applies across the options tracker, the dashboard, and trade notes at once, so the same trade never reads two ways in two places. It’s a display choice: no stored result changes, and switching back restores the previous percentages exactly.

// 06 · commissions

Default commissions

Separate defaults exist for options (per contract) and stocks (per trade). They pre-fill the commission when you enter a trade by hand, and stay editable on every one.

// 07 · positions

Position locking

When on, a position locks once fully sold, and rebuying the same ticker starts a new position instead of reopening the old one — which keeps each round trip’s result separate. Turning it off lets the old position reopen and absorb the new shares.

This is per account. The full explanation, including the different lock you hit when shares back a covered call, is in grouping trades into one position.

Short selling

Also per account, and off until you switch it on — see how to short sell and cover.

// 08 · risk

Deployed-capital warning

Warn when deployed exceeds (%) sets a threshold on how much of the account’s balance is tied up — option collateral plus the cost of open stock lots, divided by the balance. It is a number between 1 and 100, and it is per account.

Crossing it changes nothing about your trades. It marks the deployed figure on the dashboard, draws the threshold on the Risk History chart, and drives that page’s count of days spent at or above the line.

Frequently Asked Questions

Does changing the base currency convert my numbers?
No, and deliberately. Changing it swaps the symbol every amount is displayed with and nothing else — no exchange rate is applied. An invented rate would turn accurate records into a plausible-looking fiction.
What does the option P&L % basis change?
What every option percentage divides by: either the collateral the position tied up, or the premium you collected when you opened it. It reshapes percentages across the options tracker, the dashboard, and trade notes, and changes no stored result — it is a display choice.
Why doesn't my default commission apply to imported trades?
Imported trades take their fees from the file, which is the more accurate source. The default only pre-fills trades you enter by hand, and stays editable on each one.
Do settings apply to all my accounts?
Almost none of them do. Base currency, cost basis method, option P&L % basis, default commissions, position locking, short selling, and the deployed-capital warning are all stored on the account that is active when you change them. Only your timezone applies across every account.
I changed the cost basis method — why didn't my P&L change?
Existing sells keep the result they were recorded with until you press Recalculate All Trades, which recomputes every sell in the account under the new method. The button appears only once the method you picked differs from the one in use.

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