you're forgiven, there are more Irish in Texas :-)

I too , like some of the posters on here note ,in the years I have owned BRK, that estimates of FMV are about 12-18 months ahead of market price.
I have a social behavioural hunch on this :
2 types of BRK investor :

Catious, long term holders, whi want to be sure every dime they pay is really worth 11 cents at minimum
or

cautious , long term holders who, perhaps like me, take on risky side bets and roll the gains into BRK for safety as until yields reached 5 %+ in a safe investment, there was nowhere else to go...as we too like to think we are getting 11 cents for every dime spent , but will take 10.5 due to timing and other gains.
so the demand is sluggish, lagging , but sure.. its the hare and the tortoise, and its about how many hares you can exchange for a tortoise.