April is in Q2.
A key detail from the Alphabet earnings: there appeared to be different performance trajectories for the brand and direct response components of their advertising. Direct response continued to have substantial year-on-year growth throughout the entire quarter — can be explained by brands now directly reaching people at home under quarantine. Brand advertising growth accelerated in the first 2 months of the quarter, but began to experience a headwind in mid-March. Snap's earnings call appeared to include the same observation, from Evan Spiegel: "In the short-term, we are shifting sales resources and pulling forward some investments in direct response to better serve the advertisers who are trying to reach our audience during this time…".
Additionally, Alphabet obviously also makes its money through Google Cloud Platform, whose compute usage will continue to pick up as more and more people consume online content at home. The net argument is that, even in Q2, Alphabet might come out looking stable because it is not as exposed to the downsides of COVID as, say, Twitter or Facebook.
THAT is what I mean when I say "we'll see".
At the moment, the stock prices of health care are up +5%, consumer staples +6.5%, and information technology +8.5%. Energy is down -50%, consumer discretionary -27%, and financials -22%. Due to this, the composition of the S&P500 has dramatically changed, most of its underlying capital is now in higher priced assets in the former list, rather than the lower priced assets in the latter list. Because the S&P500 is a capitalization-weighted index, the total market value reflects this.
Honestly this is all just a giant advertisement for investing in index funds.