Thanks for the input. I saw an article on that even de-bunked the whole dollar cost average technique as being actually inferior (!) to a single lump sum.
However, my time horizon is about 20 years. DCA up, down or sideways is exactly what I'm doing.
I've said earlier, this is a speculative instrument that should be a small, no, tiny part of one's portfolio. Right now, it is cheap. A falling knife? Perhaps. Who knows, I'm accumulating shares. I'll let you know when I think it's time to hold.