Sizing protective puts with micro index options

A smaller listed increment

In 2020, listed options became available on micro S&P 500 and micro Nasdaq 100 index futures, after those micro futures had launched in 2019. A micro-index-option is an option on a stock-index futures contract sized at one-tenth of the standard emini notional.

With the S&P 500 near 3400, one standard emini index futures contract was treated as about 170000 dollars of notional, so one protective put on that contract insured that same allocation slice. Micro listings were sized at about 17000 dollars, which changed the increment used to match insurance to account equity. A protective put is a long listed put used to bound downside on an equity allocation or a long index-futures position.

Whole standard puts left a mismatch

Notional-match is how closely option or futures coverage dollars line up with the equity or futures exposure being insured. A 600000-dollar S&P-style book could not be matched with whole standard puts: three contracts covered 510000 dollars and four covered 680000 dollars, overshooting by 80000 dollars.

Three standard puts plus five micro puts were shown as a 595000-dollar overlay, closer to the 600000-dollar target than either whole-contract choice. Futures contract selection, in this workflow, meant choosing among standard and micro index listings so notional, hedge increment, and liquidity fit the book being protected.

A partial hedge on a long emini

A long standard emini futures position could be only partly insured by buying one or two micro puts rather than one full-size put. That is a partial-hedge: insurance that covers only a slice of an existing long futures or equity position.

A live step after paper trading

The smaller listings were framed as a live step beyond paper trading: the same option structures, less capital, and smaller profit-and-loss swings than the standard contract. Paper trading means running the same entry, exit, and sizing rules without full-size capital before those rules are used on a standard contract.

Early listings were uneven

Early conditions were uneven, with platform glitches and delayed listings. Micro S&P options were described as having tight market-maker spreads, while micro Nasdaq options were thinner and required a bid-ask check before entry.

Venue differences cited in the archive

Relative to cash-equity venues, futures and futures options were cited for simpler tax reporting, different tax-rate treatment, and nearly continuous access from Sunday night through Friday close.

Small size was not treated as trivial risk

During the March 2020 volatility spike, even micro-sized index futures were described as large enough to damage an unhedged account, so small contract size was not treated as trivial risk.