Ann: Q2FY19 Activities Update and Appendix 4C, page-55

4DS shares flying on news they have now got 40nm cells that are "functional" on 300mm wafers. They hope to have a functional megabit array test chip "during 2019".

WBT have had functioning 40nm megabit array chips since mid 2018 - albeit from 200mm wafers. By the end of the quarter they should have progressed to a 28nm process and from 300mm wafers. Also, using a "cheaper" process, less cost per bit. Technologically, if you can take both companies at their word, weebit appear to be well ahead of 4DS and increasing the gap. 

4DS shares fly on any positive news however because IMO, the CEO has repeatedly stated that they will sell out to highest bidder the moment the tech is ready, and currently they have a joint dev agreement with a subsidiary of Western Digital, who would be the most likely buyer. 

My opinion is that WBT would be a better takeover target than 4DS, but WBT management have said they want to go the distance as a company that licences it's IP - so they payday will come gradually if and when/as they get customers/partners.

If you had a two horse race with IMO multi bag odds on the winner, and quite likely the runner up as well, you would probably put some money on both horses. 

Just like that old el paso add - "por que no dos?".. Why not have both?