A basis in mathematics, finance, science, and other contexts is a foundational concept or valuation measure. It can also be part of an organization's name. Specific meanings include:

Finance and accounting

  • Adjusted basis, the net cost of an asset after adjusting for various tax-related items
  • Basis point, 0.01%, often used in the context of interest rates
  • Basis swap, an interest rate swap
  • Cost basis, in income tax law, the original cost of property adjusted for factors such as depreciation
  • Tax basis, cost of an asset

Securities markets and trading strategies

  • Basis trading, a trading strategy consisting of the purchase of a security and the sale of a similar security

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Fixed income markets:

  • Treasury basis trade, a leveraged arbitrage strategy exploiting price differences between Treasury securities and futures contracts
  • Index arbitrage, a strategy that exploits price differences between a stock index and its futures contract

Commodities and physical assets:

  • Commodity basis trade (Futures contract, Commodity market), a hedging or arbitrage strategy involving spot and futures prices in commodity markets

Equities and funds, including ETFs:

  • Equity basis trade (Merger arbitrage and ETF arbitrage → ), including arbitrage between ETFs and NAVs or spreads in merger arbitrage
  • Dividend arbitrage (Dividend stripping), a tax optimization strategy involving dividend-paying equities

Derivatives and synthetics:

  • Options basis trade (Box spread, , Put–call parity), strategies involving synthetic positions like box spreads or conversions
  • Synthetic tax arbitrage, historical securities lending strategies used by funds to capture or simulate tax benefits

Digital assets:

  • Crypto basis trade, a trading strategy using price differentials between spot and futures in digital assets

Controversial schemes:

  • CumEx trading (CumEx-Files), a controversial tax arbitrage strategy involving dividend withholding refunds in Europe

Pricing concepts:

  • Basis of futures, the value differential between a future and the spot price
  • Basis (options), the value differential between a call option and a put option</ol>

and technology

  • Basis function
  • Basis (linear algebra)
  • Dual basis
  • Orthonormal basis
  • Schauder basis
  • Basis (universal algebra)
  • Basis of a matroid
  • Generating set of an ideal:
  • Gröbner basis
  • Hilbert's basis theorem
  • Generating set of a group
  • Base (topology)
  • Change of basis
  • Greedoid
  • Normal basis
  • Polynomial basis
  • Radial basis function
  • Standard basis
  • Transcendence basis of a field extension
  • Basis database

Chemistry

  • Basis (crystal structure), the positions of the atoms inside the unit cell
  • Basis set (chemistry)
  • Dry basis, an expression of a calculation in which the presence of water is ignored

Organizations

  • Bangladesh Association of Software and Information Services
  • Basis Educational Group
  • Basis Schools, a group of schools in Arizona, Washington, D.C., and Texas
  • Basis Technology Corp., a text analytics company

People

  • Dimitris Basis, Greek singer
  • Liron Basis (born 1974), Israeli footballer

See also

  • Base (disambiguation)
  • Basic (disambiguation)
  • Basis of Union (disambiguation)
  • Basis set (disambiguation)