I reckon DUO is not the best speculative tech stock, but should be in the middle, personally think DUO is better than VTX (No offense nor downramp, just IMO). VTX was valued @$76m, approximately 3 times of DUO's valuation.
Even DUO is back to 1.4c, I still hold
I sort of remind me of ISX, when it initially spiked to around 8c, then just hovering around 7c-10c, took few weeks to fetch 20c eventually.