Buying COIN puts: hedge math and breakevens

A long put is the right to sell 100 shares at $146 until August 28, 2026. Max loss is the $905 premium; max profit is $13,695, reached only if COIN goes to zero.

Below $136.95 the position is in profit at expiry, gaining one-for-one with each dollar the stock falls. Above $146 it expires worthless — which is the good outcome if you own the shares.

Puts carry a structural headwind: skew. Downside strikes on COIN 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 $146 at the cost of 6.2% of position value — an annualized drag of 83.6% 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 27-day window entirely.

If you are hedging, be clear about what you are insuring. One put covers 100 shares — $14,626 of COIN. A hedge that covers a quarter of your position is a quarter of a hedge.

Time is the cost you cannot hedge. A debit structure needs the move and needs it before expiry, and being early is indistinguishable from being wrong once the contract settles.

Directional structures on COIN are levered crypto exposure with an equity's borrow and an equity's hours. If the view is on bitcoin, the cleaner instruments are elsewhere; what COIN adds is exchange-volume and regulatory beta, which cuts both ways and does not respect the expiry you chose.

COIN's Aug 28 strikes are $2.5 apart near the money (1.71% of spot). On a ladder that wide, "pick the 0.30 delta strike" resolves to whichever rung happens to be closest — sometimes not close at all. 5.5k contracts of open interest on Aug 28 is thin, and a structure that needs four separate fills will pay for it. 27 strikes on that expiry — 33% 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. Workable around the money, genuinely thin in the wings. Price your condor width against the open interest, not the ladder.

Skew is inverted: the 25-delta CALL implies 1.7% 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 73% ATM implied vol, the Aug 28 options are pricing a one-standard-deviation move of $28.93 over 27 days — roughly −19.8% to +19.8%, or $117.33 to $175.19. Compare that with where the short strike of the structure above sits. A target inside the implied move is one the market already thinks is likely; a target outside it is the one you are actually being paid for.

What actually goes wrong here, as opposed to in general: Weekend gap risk. Every other name on this list stops moving at the close on Friday; the asset behind this one does not.