Bitcoin’s Tumble Shook Up Stocks. What to Make of the Market’s Messy Week.

Blink and you missed it.

On the surface, it looked like nothing much happened this past week. The Dow Jones Industrial Average fell 174.29 points, or 0.5%, to 34,207.84, while the S&P 500 index declined 0.4% to 4155.86, and the Nasdaq Composite rose 0.3% to 13,470.99. Even the 10-year Treasury yield ended the week off just 0.01 percentage point, at 1.629%.

If…