Kabuse (dark cloud cover) A bearish two-day candlestick combination. It consists of a second-day long black bar that opens above the high of the previous day's blank bar and closes within the previous day's range (in an uptrend).
Karakasa (hangman at the top, hammer at the bottom) A bearish candlestick at the top of the trend, bullish at the bottom of the trend. The candlestick can be either blank or black. The body of the candlestick is very small and only half the length of the shadow.
Kenuki (tweezers) A "wait-and-see" two-day candlestick combination. It consists of consecutive bars that have matching highs or lows. In a rising market, a tweezers top occurs when the highs match. The opposite is true for a tweezers bottom.
Key reversal day The daily price range on the bar chart of the reversal day fully engulfs the previous day's range; also, the close is outside the preceding day's range.
Kirikomi A bullish two-day candlestick combination. It consists of a blank marubozu bar that opens the second day lower (than the previous low of a long black line) and closes above the 50 percent level of the previous day's range.
Knockin A plain vanilla option that does not exist until the trigger is reached. Knockout a plain vanilla option that goes away if the trigger is reached.
Koma (spinning tops) A reversal candlestick formation that consists of a short bar, either blank or black. This candlestick may also suggest lack of direction.