this time next week the TIRN's convert to normal TIR's,...

this time next week the TIRN's convert to normal TIR's, therefore anyone with TIR's should be selling them and buying an equal amount of TIRN's for 10% cheaper. Also get the funds for your TIR's on the 10th and not have to pay for your TIRN's until the 18th.
Maybe there is a free lunch?

Check it out with your broker, don't take my word for it.