Tense son traded securities (7)

I believe the answer is:

futures

'traded securities' is the definition.
(type of security traded on the stock market)

'tense son' is the wordplay.
'tense' becomes 'future' (future is a kind of tense).
'son' becomes 's'.
'future'+'s'='FUTURES'

(Another definition for futures that I've seen is " Commodities or stocks bought for delivery at later date".)

I've seen this clue in The Telegraph.

Want a hint initially instead of a full solution? Install my app