Lock Stock Thesis Shift4 Payments' (NYSE:FOUR) stock saw a massive spike after reporting Q4 earnings. This was likely due to the combination of a good earnings report/guidance and M&A speculation. No M&A activity ended up taking place, and since then the stock has declined precipitously. We believe the recent selloff is overdone and that long- term investors can acquire shares at an attractive valuation. The Basics Shift4 is a payments processor, though they do have some software/website offerings through t ...