Canary In A Gold Mine

AITOOW is aware that much of the rise in equity prices is due to stock repurchasing plans by corporate America? This strategy supports price levels through supplying demand directly and indirectly (fewer shares outstanding make year over year or quarter over quarter comps more impressive = outside buyers are impressed = demand). I won't question whether this is the best use of corporate funds or ethical (directors being rewarded for earnings increases or share price appreciation). I will question if it is another instance of "artificiality" causing a bubble that will cripple the economy. Not to mention if these buybacks are all being financed with excess cash. How many companies are borrowing money (at today's low interest rates) to do this? What happens to them when rates rise? Last year 66% of corporate earnings went to buy back shares. 4 trillion since 2008.