$FB "LT Winner But ST Headwinds". User no. &amp; engagement spike from Covid-19. Ad revenues flat y/y in Apr, but industry may see "even more severe" decline later. Guiding OpEx +31% in FY20; EBIT would fall 44% if revenues flat. 24x 2019 EPS; was 26x in Jan. https://t.co/xsKY9FJCjv