Buying KO puts: hedge math and breakevens

A long put is the right to sell 100 shares at $88 until October 30, 2026. Max loss is the $222 premium; max profit is $8,578, reached only if KO goes to zero.

Below $85.78 the position is in profit at expiry, gaining one-for-one with each dollar the stock falls. Above $88 it expires worthless — which is the good outcome if you own the shares.

Puts carry a structural headwind: skew. Downside strikes on KO 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 $88 at the cost of 2.5% of position value — an annualized drag of 28.0% if you run it continuously. That is the honest price of permanent protection, and it is why most people don't.

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 33-day window entirely.

If you are hedging, be clear about what you are insuring. One put covers 100 shares — $8,781 of KO. A hedge that covers a quarter of your position is a quarter of a hedge.

The ceiling on a spread is a real cost, not a theoretical one. It is paid exactly in the scenarios where your thesis worked best, which is when it hurts most to notice.

There is very little to express. A stock that realizes in the low teens does not travel far enough in a month for a debit structure to clear its own breakeven often enough to matter, and the strike ladder is coarse relative to the moves. If you have a Coca-Cola view, the shares are the instrument.

KO's Oct 30 strikes are $1 apart near the money (1.14% of spot). That is workable, but it means a one-rung move in a strike is a real change in the trade, not a tweak. 2.7k contracts of open interest on Oct 30 is thin, and a structure that needs four separate fills will pay for it. 18 strikes on that expiry — 67% 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. Reasonable at the near strikes; the wings are quiet enough that a four-leg structure is not worth the slippage.

Skew is inverted: the 25-delta CALL implies 1.4% more vol than the put. That is the market pricing upside risk above downside risk — a squeeze, a takeover rumour, or a crowded short. Owning upside on an inverted skew means paying the expensive side of the surface, which is worth knowing before you buy the call. 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 22% ATM implied vol, the Oct 30 options are pricing a one-standard-deviation move of $5.76 over 33 days — roughly −6.6% to +6.6%, or $82.05 to $93.57. A directional structure whose profit zone begins inside that band is expressing a view the market has already priced.

The KO-specific failure mode: Chasing yield by moving the short call closer to the money on a name whose whole appeal is that you keep the shares.