Delta One Products

"Delta one" describes any product whose value moves dollar-for-dollar with its underlying — a delta of exactly 1, with no curvature (no gamma) and no dependence on volatility. If a stock rises $1, a delta-one product on it rises $1, full stop; there's no optionality bending that relationship. This puts total-return swaps, single-stock futures, index futures, and most ETFs in the same bucket as plain stock, even though they're built very differently under the hood.

The point of delta one products is usually access, not payoff shape. A pension fund that can't legally hold foreign equities directly might get identical economic exposure through a total-return swap; a hedge fund that wants leveraged or capital-efficient exposure without options' path-dependence uses futures; a retail investor gets diversified exposure via an ETF instead of buying every underlying stock. Banks run large "delta one desks" whose job is manufacturing this synthetic exposure at the lowest possible financing cost and passing the saving to clients as a spread.

Because there's no optionality, delta one products don't need implied volatility to price — they're valued largely off financing rates, dividends, and borrow costs, which is exactly why they sit in a different desk and different risk framework than options trading.