Buying F puts: hedge math and breakevens

A long put is the right to sell 100 shares at $15 until August 28, 2026. Max loss is the $78 premium; max profit is $1,422, reached only if F goes to zero.

Below $14.22 the position is in profit at expiry, gaining one-for-one with each dollar the stock falls. Above $15 it expires worthless — which is the good outcome if you own the shares.

Puts carry a structural headwind: skew. Downside strikes on F trade at higher implied vol than equivalent upside strikes because everybody wants the same protection at the same time. You are buying the expensive wing, always.

As a hedge on 100 shares, this put caps the loss below $15 at the cost of 5.3% of position value — an annualized drag of 71.8% if you run it continuously. That is the honest price of permanent protection, and it is why most people don't.

The modal outcome for a bought put is expiring worthless. F above $15 at August 28, 2026 costs the full $78, and stocks drift up more often than down.

Timing risk is worse than for calls: crashes are fast and rare, so a put's payoff is concentrated into a few days that may fall outside your 27-day window entirely.

Implied vol works against a debit buyer in both directions: pay too much for it at entry and the position needs a bigger move; watch it collapse after an event and the position loses even when the direction was right.

A $15 stock with fifty-cent strikes gives you thirty rungs across the whole plausible range, and a directional structure that needs more precision than that does not exist here. The upside is that the debit on any spread is small in dollars; the downside is that so is the profit, and fees are not.

F's Aug 28 strikes are $0.5 apart near the money (3.41% of spot). Coarse enough that the strike you want frequently does not exist, and the nearest rung is a different trade. 11k contracts of open interest on Aug 28 is thin, and a structure that needs four separate fills will pay for it. 15 strikes on that expiry — 36% of the board — carry prints that agree with their own implied volatility and hold up across the ladder, and those are the strikes priced here. Liquid near the money, and the penny increments on cheap contracts mean the spread is a large fraction of the credit.

Skew is ordinary — the 25-delta put implies 3.0% more vol than the 25-delta call, about what an equity surface looks like when nothing unusual is being priced. Nothing on the surface argues strongly for one direction of structure over the other. The term structure is flat inside 1.5% between the two captured expiries, so there is no calendar edge to harvest and no event visibly priced into one month over the other.

At 35% ATM implied vol, the Aug 28 options are pricing a one-standard-deviation move of $1.38 over 27 days — roughly −9.4% to +9.4%, or $13.3 to $16.06. That band is the free part of the move. Anything your structure needs beyond it is the part you have to be right about.

The mistake this name punishes hardest: Getting called away the day before the dividend and discovering the yield you were writing calls to enhance is the yield you just forfeited.