Call Option / Call A buyer’s right - but not obligation - to purchase a specific quantity of commodities or securities at a certain price (the strike price) at a certain time. Home Resources Startup Law Dictionary Call Option / Call Return to Glossary Need legal help? Schedule a free consultation with a world-class startup attorney on LawTrades. LET'S CHAT Roy G. Business Attorney Heather N. Business Attorney Jared S. Business Attorney Tell us about your project We'll connect you with a vetted attorney in just a few minutes. Trusted by top companies like :