AK, 100 NL....

opens with raise, call, re-raise .. no stats but button is fairly tight .. correct to fold here?

Full Tilt No-Limit Hold'em, $1.00 BB (6 handed) - Full-Tilt Converter Tool from FlopTurnRiver.com

MP ($293.65)
CO ($153.30)
Button ($117.60)
SB ($100.50)
Hero (BB) ($102.40)
UTG ($102.90)

Preflop: Hero is BB with A, K
1 fold, MP bets $3.50, CO calls $3.50, Button raises to $15.50, 4 folds

Total pot: $12 | Rake: $0

Results:
Button didn't show
Outcome: Button won $12

This spot comes down to how light MP opens and hence how light BN is going to be squeezing. His bet is very large for in position suggesting that he's not very good and is probably over-playing something goodish.

I'd dump it and shrug.

If you like variance, 4bet and get it in, if you don't, just let it go and wait til you have better information.

I would muck

post some info on villains... without reads I would muck it

embrace the variance!

Std fold. Your crushed

stats on MP are important here. how tight is tight with the Button? 17/13? 20/16? this is a great squeeze spot for the button and saying we're crushed is way off. We may be behind, but his range def shouldn't crush us here. If he is only squeezing QQ+/AK here then we should be killing this guy.