You can invest in a put index, for example: http://www.cboe.com/delayedquote/advanced-charts?ticker=^PUT http://www.cboe.com/delayedquote/advanced-charts?ticke

You can invest in a put index, for example: http://www.cboe.com/delayedquote/advanced-charts?ticker=^PUT http://www.cboe.com/delayedquote/advanced-charts?ticker=^PUT