Commit To Buy Five Prime Therapeutics At $20, Earn 17.1% Annualized Using Options

Investors considering a purchase of Five Prime Therapeutics, Inc ( FPRX) stock, but tentative about paying the going market price of $22.13/share, might benefit from considering selling puts among the alternative strategies at their disposal. One interesting put contract in particular, is the December put at the $20 strike, which has a bid at the time of this writing of $1.85. Collecting that bid as the premium represents a 9.2% return against the $20 commitment, or a 17.1% annualized rate of return (at Stock Options Channel we call this the YieldBoost).

Top YieldBoost Puts of the S&P 500 »

Selling a put does not give an investor access to FPRX's upside potential the way owning shares would, because the put seller only ends up owning shares in the scenario where the contract is exercised. And the person on the other side of the contract would only benefit from exercising at the $20 strike if doing so produced a better outcome than selling at the going market price. ( Do options carry counterparty risk? This and six other common options myths debunked). So unless Five Prime Therapeutics, Inc sees its shares decline 9.5% and the contract is exercised (resulting in a cost basis of $18.15 per share before broker commissions, subtracting the $1.85 from $20), the only upside to the put seller is from collecting that premium for the 17.1% annualized rate of return.

Below is a chart showing the trailing twelve month trading history for Five Prime Therapeutics, Inc, and highlighting in green where the $20 strike is located relative to that history:

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