What is a dead cat bounce?

The pattern has three parts, drawn at the top of this page on hypothetical daily candles. A sharp drop, often a gap on news such as earnings, breaks a support level. A bounce follows, retracing part of the drop on lighter volume, and stalls at or just under the broken level, which now acts as resistance. Then the stock rolls over and closes below the low of the drop: a lower low.

In the drawing, XYZ trades above support at $66.00, gaps down after earnings to a low of $55.80, bounces for six sessions to $65.80, 20 cents under the broken level, then falls to $51.80. The bounce recovered about two thirds of the drop from the last close before the gap, $70.90: enough to look like a recovery, without reclaiming a single level that mattered.

Dead cat bounce
A short rebound inside a downtrend that fails, often at the level that broke, and is followed by a lower low. It can only be confirmed after the fact.
Lower high
A swing high below the previous one. In a downtrend, a bounce that ends as a lower high leaves the trend intact.

Why do stocks bounce in a downtrend?

Even in a strong downtrend, prices rarely fall in a straight line. Several kinds of buying usually show up after a sharp drop:

  • Short covering. A short sale is the sale of shares you do not own, and short sellers close the trade by buying the shares back, as the SEC’s investor guide to short sales explains. After a big drop, many take their profits at once, and that buying lifts the price for a while without anyone turning bullish.
  • Bargain hunting. The stock looks cheap next to where it was a week ago, so buyers anchored to the old price step in.
  • Mean reversion trades. Short-term traders buy stretched, oversold readings for a quick move back toward an average, as in a mean reversion strategy.
  • A pause in forced selling. Funds and margin calls sell in waves; between waves, price drifts up on thin volume.
Short covering
Buying back shares that were sold short, to close the position. A wave of it can lift a falling stock for a while without any new long-term buyers.

Why does the bounce fail at the broken level?

None of those buyers has to believe the reason for the drop has gone away. When the covering ends and the bargain hunters are full, the bounce meets new supply at the broken level: holders who bought before the gap and want out near their cost, and sellers who missed the first drop. Old support turning into resistance is the core idea of the support and resistance strategy, and it is why so many bounces die within a few cents of the level that broke.

Dead cat bounce or real reversal: how do you tell them apart?

On the first day of a bounce, a dead cat and a new uptrend look the same. The difference shows in what the bounce fails, or manages, to do. Check these on daily closes:

  • Structure: does the bounce stall below the last lower high, or close above it? A close above the last swing high is the change of character described in market structure; a stall below it is still a downtrend.
  • The broken level: does price close back above the level that broke and hold it on a retest, or fail beneath it?
  • Volume: compare the bounce with the drop. Light volume on the way up after heavy volume on the way down says buyers are not committing; a reversal usually shows heavy volume on up days and lighter volume on pullbacks. See how to read volume.
  • The next pullback: a reversal’s first pullback holds above the reclaimed level and makes a higher low; a dead cat’s next leg breaks the low of the drop.

Turn your phone sideways to read the image. Tap to close.

Two panels from the same hypothetical drop, with a dashed blue broken level. Left, dead cat bounce: price falls, bounces to just under the level (stalls under the level, lower high), then falls to a lower low; the volume bars below are heavy on the drops and light on the bounce. Right, real reversal: price falls, closes back above the level, the retest holds above it, then makes a higher high; volume is heavy on the rallies and light on the pullback.

Catching a falling knife: why averaging down into a drop is so costly

Catching a falling knife means buying a stock while it is still falling sharply, because it looks cheap, before anything shows the fall has ended. The first buy is rarely the problem: a small position with a stop is a defined risk. The damage starts when the stop is skipped and each new low becomes a reason to buy more, which is averaging down.

Hypothetical, on the same XYZ: a trader buys 100 shares at $58 the morning after the gap. With a stop at $55.30, under the $55.80 low, the trade would have closed during the roll-over for a loss of $270, plus slippage. Instead there is no stop: the trader adds 100 shares at $54 and 200 at $50, pulling the average cost down to $56 and then $53. At $46, the 400 shares are worth $18,400 against $21,200 paid: a $2,800 loss, more than ten times the planned one, on a position that grew while the trade was failing.

Falling knife
A stock that is falling fast. Catching one means buying during the fall, before any sign that it has ended.

Turn your phone sideways to read the image. Tap to close.

Left, a hypothetical XYZ path after the gap: a buy of 100 at 58, a bounce to about 66, then a slide with more buys of 100 at 54 and 200 at 50, and a dashed orange average-cost line stepping from 58 to 56.00 to 53.00 as price falls to 46.00. A red cross on a short dashed line at 55.30 marks where one buy with a stop would have exited, at −$270. Below: 400 × (53.00 − 46.00) = −$2,800. Right, two bars: one buy with a stop, −$270, and averaging down, −$2,800.

Worked example: a plan that waits for confirmation (hypothetical XYZ)

Same stock, a different trader. After the gap she writes her plan before the bounce begins, so the bounce cannot talk her into anything:

  1. No buys while XYZ trades below $66, the broken support. A rise toward it is a bounce until proven otherwise.
  2. Proof needed: a daily close above $66 on volume above its 20-day average, then a pullback that holds above $66.
  3. Entry on the first close back up after that pullback; stop under the pullback low and the $66 level.
  4. Size from the stop: a risk of 0.5% of a $20,000 account, $100.

What happens next: no trade, or a confirmed entry

In the path at the top of the page, the bounce peaks at $65.80 and never closes above $66, so the plan never triggers: no trade and no loss while the stock falls to $51.80.

Had XYZ reversed instead, the numbers might have been: a close at $67.20 on heavy volume, a pullback to $66.10 that holds, and a close back up at $67.50. Entry $67.50, stop $65.60, a risk of $1.90 a share, so $100 ÷ $1.90 = 52 shares, about $3,510 of stock. A first target near the pre-gap high, around $71.30, is 2R away. If the retest fails, the loss is about $100 plus slippage. Waiting for proof costs a later, higher entry, never a 400-share hole.

Some experienced traders take the other side and short the failure at the broken level, with a stop above the bounce high. That carries its own risks, including sharp squeezes, covered in short selling.

Common dead cat bounce mistakes

Most of the damage comes from a handful of habits:

  • Calling every bounce a dead cat. Some bounces start real reversals; the checks above decide, not the label.
  • Buying because the price is lower than last week. Cheap compared with an old price says nothing about value or trend.
  • Averaging down without a cap, or moving the stop under each new low.
  • Reading one green day on light volume as a turn.
  • Ignoring the news behind the drop. A gap on a profit warning or a guidance cut can change how a stock is valued for months; if you already hold it, see when to sell a stock.