A "stock market correction" refers to a 10% pullback in the value of a stock index.[1][2] Corrections end once stocks attain new highs.[3] Stock market corrections are typically measured retrospectively from recent highs to their lowest closing price. The recovery period can be measured from the lowest closing price to new highs (trough to recovery).[4] Gains of 10% from the low is an alternative definition of the exit of a correction.[citation needed]