What Changed For Cipher Digital Stock, And What Did Not?

Shares of Cipher Digital (CIFR) fell 26.4% in the five trading days from October 8 to October 15, 2026. The S&P 500 slipped 0.25% over the same period. The stock saw its worst single-day performance on October 13, when executives announced a plan to sell $850 million of convertible notes. Cipher already carried a large debt, so how much does the new borrowing add to it.