the literal ad itself e.g. picture, words, video, whatever the user sees.

400% seems much higher than anything I've seen. assuming 200k at google (likely conservative), this implies a 1m offer from a quant fund for someone with no special complementarity for the role? i would be very surprised labor market is this much out of alignment.

I can't edit the original post. It was a 300% pay raise, salary was 400% of original. 1m at a quant fund isn't unreasonable 5 years out, but it would be extraordinarily high.

agree, but surprised at this number for someone without a proven track record given the high false positive rate for success in these roles

Given that recent grads probably male 200K their first year at Google I'd say its probably north of 1.5M which is obviously ridiculous. Top portfolio managers at major Hedge Funds barely make that.