The regulatory body that governs options restricts them for IPOs. There is a period of time (I believe it's 2 weeks) after IPO that options are not allowed to b

The regulatory body that governs options restricts them for IPOs. There is a period of time (I believe it's 2 weeks) after IPO that options are not allowed to be traded in public markets, so you have to wait until then. At that point, you can buy puts from any full service brokerage (and many discount brokerages). If you are a sufficiently high net-worth individual or investing on behalf of a sufficiently large fund, you may be able to make a private deal with one of the investment banks participating in the IPO, but I don't know much about that.