Buying AMD puts: hedge math and breakevens

A long put is the right to sell 100 shares at $630 until October 30, 2026. Max loss is the $3,900 premium; max profit is $59,100, reached only if AMD goes to zero.

Below $591 the position is in profit at expiry, gaining one-for-one with each dollar the stock falls. Above $630 it expires worthless — which is the good outcome if you own the shares.

Puts carry a structural headwind: skew. Downside strikes on AMD 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 $630 at the cost of 6.2% of position value — an annualized drag of 68.4% 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. AMD above $630 at October 30, 2026 costs the full $3,900, 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 33-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.

AMD is the higher-beta way to express a semis view, and the options market knows it: the vol premium over NVDA at the same moneyness is small, so you are paying nearly the same for a name with a wider distribution. That is an argument for the spread over the outright, and for putting the short leg at a level the last cycle actually reached.

AMD's Oct 30 strikes are $10 apart near the money (1.59% of spot). Coarse enough that the strike you want frequently does not exist, and the nearest rung is a different trade. 12k contracts of open interest on Oct 30 is thin, and a structure that needs four separate fills will pay for it. 41 strikes on that expiry — 100% 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. Good depth around the money, thinner in the wings than NVDA's; keep condor widths inside where the open interest actually is.

Skew is inverted: the 25-delta CALL implies 1.6% 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 in contango: the back month implies 4.5% more vol than the front. Calm now, uncertainty later — which rewards selling the front month and makes the back month an expensive thing to own outright.

At 55% ATM implied vol, the Oct 30 options are pricing a one-standard-deviation move of $104.08 over 33 days — roughly −16.5% to +16.5%, or $526.55 to $734.71. A directional structure whose profit zone begins inside that band is expressing a view the market has already priced.

The mistake this name punishes hardest: Selling AMD premium as a diversifier from an NVDA position. It is the same trade at a higher beta.