Santoli’s Wednesday market notes: Speculative fever on bitcoin breaks, and the S&P 500 tests a recent low

Traders on the floor of the New York Stock Exchange.
Source: NYSE

This is the daily notebook of Mike Santoli, CNBC's senior markets commentator, with ideas about trends, stocks and market statistics.

  • The crypto crunch, sell-the-news on great earnings, tapping-of-brakes in homebuilding and tax-day cash-raising this week have all amounted to a pretty routine-looking test of last week's broad-market low – for now.