CNBC Pro

Beware: Bull market flashing warning signs

Share
Adam Jeffery | CNBC

Calling a top in the bull market is a way to go broke quickly or lose your job if you're a Wall Street strategist.

Big rallies usually find different reasons or a different combination of the old reasons to end. It's usually never the same.

That may be even more so the case for this six-year bull market as record stimulus from the Federal Reserve causes what appears to be excesses to be larger and last longer than during past tops.

Still, many strategists are starting to sound the alarm as past bear market signals begin to mount. Things like big merger activity and a record rise in borrowing to buy stock are giving many pause.

More In Investing

CNBC ProThe first bitcoin futures ETF is trading. Here’s what could be ahead for investors
CNBC ProBlackRock’s Rieder sees ‘a lot’ of stocks at reasonable prices, expects market rally into year-end
CNBC ProSantoli’s Tuesday market notes: Earnings power stocks higher, bitcoin futures ETF gets warm welcome