Stock2FOMO formula explained:

y(x) = y_i (2x_i/x - 1)^a

Time is anchored to Oct 4, 2009, where x = 0 and y = 0

With a < 0, the curve goes to infinity as x → 2x_i

x_i anchors the curve where y = y_i

y_i sets the scale

a controls the steepness