Based on MMM's performance over the last few years and the current stock price does anticipate a stock split? I realize it does little in terms of shareholder valuation other increase the number of outstanding shares.
Stocks don't split much anymore....look at the high flyers?! It is out of fashion. I higher price is better and companies buy back stock to get there. 3M won't split in my opinion.
I have literally held MMM since 1955, and have witnessed a number of splits over that time. So they do have a tradition in that area. However, fewer stocks seem to be splitting anymore. My last two positions were FCX and KO. If there is a split, it will be in the near future, as this is about the level where it has occurred in the past.