0xSample…Demo

Swaps. A transaction is a swap only when your wallet sends exactly one asset and receives exactly one other asset, and the receipt shows a recognized router or a DEX swap event. Intermediate hops between pools are not trades. Mints, claims, deposits, liquidity actions, bridges and batched swaps are listed as unsupported and left out. Wrapped ETH is treated as ETH.

A result is one sale. Each sale is one transaction. If it used several purchase lots, the lots are added into one result. Only fully matched sales are ranked, so a sale that mixes known and unknown cost basis is shown as partial and never ranked.

Cost basis. FIFO: each sale consumes your oldest purchases first, ordered by block, transaction index and log index. Tokens that arrived by a plain transfer have an unknown cost. They are excluded and flagged, never counted as free. A transfer between your own wallets is also unknown, because one wallet's history cannot prove the other's cost.

Gross and net. Gross PnL is sale value minus purchase cost before any fee. Net PnL subtracts gas paid on the purchase and on the sale. Return is net PnL divided by matched cost basis including buy fees. Pool fees are part of the swap rate and are never subtracted a second time.

Gas. Gas used times effective gas price, plus the Base data fee, priced in USD at trade time. When neither side is a stablecoin, gas is split evenly between the sale and the purchase. The ETH burned for gas is also removed from your ETH inventory. Gas on transactions that are not swap candidates is not fetched, so it is not removed.

Prices. Stablecoin sides use their historical price. If none exists, they are counted at 1 USD and the result is marked estimated. Other swaps use the historical prices of both sides (Sample prices), and a swap whose sides disagree by more than 25 percent, or has no price, is not valued. Each price used, with its timestamp and source, is listed in the inspect view.

Ranking and coverage. The biggest win and loss are the largest positive and negative net PnL among fully matched sales. If anything was excluded, the page says the result is the biggest supported one, not necessarily your true all-time record. Price moves after a sale, transaction size and current holdings play no part.

Limits. Sending tokens out removes units without realizing PnL. Failed transactions, NFTs, perpetuals and lending interest are not analyzed. Open holdings are not valued. Data comes from Bundled sample data. Results are estimates for information, not tax or investment advice, and have not been audited.