CONCEPT · October 9, 2026
THE BASICSBuy the dip: strategy or trap?
Buying cheap works when the drop is broad fear. It fails when the company is genuinely broken.
CORRECTION
-10%
happens almost every year
FALLING KNIFE
trap
falls and keeps falling
THE KEY
the why
not every drop is equal
THE RULE
the why
before buying a dip, ask what caused it
Buying the dip is a valid strategy when the whole market falls on panic and then recovers. It becomes a trap when what falls is a company with a real problem: there, the price can keep dropping with no floor. The difference isn't how much it falls, but why it falls.
REFERENCE
SIMPLE RULE-10%
-10%
an average correction shows up almost every year
The size of the drop doesn't tell you whether to buy. A -10% can be a bargain or the first stop of a bigger fall.
A 10% correction is normal and happens almost every year. A drop being normal doesn't mean every drop is a buy.
- CORRECTION
- — A pullback of around 10%.
- CRASH
- — A much bigger fall, of 20% or more (a bear market).
IDEA
SIMPLE RULENot every drop is a discount
“A real bargain is still worth the same and costs less. A trap looks cheap because it's worth less and less.”
The same drop can be an opportunity or the beginning of the end. What decides is the cause, not the discount.
- BARGAIN
- — A good asset at a lower price due to passing fear.
- TRAP
- — An asset that looks cheap because its value is decaying.
THE CONCEPT
EXAMPLEA healthy drop falls and recovers
An illustrative curve. In a healthy drop price recovers; in a trap it would keep going down without turning.
In a healthy correction, price falls on broad fear and then returns. The V shape is the signal you're looking for.
- V SHAPE
- — A fall followed by a quick recovery to the prior level.
- ILLUSTRATIVE
- — A conceptual example, not a real market price.
HOW TO TELL
4 SIGNALSFour questions before buying the dip
LOOK AT THE WHY
The whole market falls on broad fear, or just this asset falls on its own problem. The first tends to bounce; the second doesn't.
BREADTH OF THE DROP
If many names fall at once, it's market panic. If only one falls while the rest hold, be careful: something's wrong with that one.
THE UNDERLYING TREND
In a healthy uptrend, drops tend to be opportunities. In a downtrend, they tend to be the next step lower.
DON'T CATCH THE KNIFE
Trying to buy the exact bottom is guessing. Waiting for signs the drop has stopped costs some price but avoids traps.
Before buying a drop, run it through these four filters. If several fail, it's probably a falling knife.
- BREADTH
- — How many names rise or fall at once, not just the index.
- TREND
- — The underlying direction of price over the medium and long term.
TYPES OF DROP
THE BASICSNot all drops are the same
Most drops are healthy corrections, but the dangerous minority is what ruins anyone who buys blind.
An illustrative split of what usually sits behind a drop. Only one of the three is a clear buy.
- VALUE TRAP
- — An asset that looks cheap while its real value decays.
- BEAR MARKET
- — A sustained fall of 20% or more.
EXAMPLES
HOW THEY BEHAVEHow different ETFs fall
| SPY | ~660 | ▼ -10% | Broad US market. Drops across the whole index tend to be the ones that bounce most. |
| QQQ | ~590 | ▼ -14% | Tech/growth. Falls harder in panic, but also rebounds with more force. |
| RSP | ~185 | ▼ -8% | Equal-weight S&P. Shows whether the drop is broad or just the megacaps. |
| SCHD | ~29 | ▼ -6% | Quality dividend. Tends to fall less: solid companies that pay income. |
| SPLV | ~75 | ▼ -5% | Low volatility. The refuge within equities when everything falls. |
Illustrative references: in a typical correction, not all funds fall the same. Knowing this helps you choose where to buy the dip.
- ETF
- — A listed basket that tracks an index or strategy.
- EQUAL-WEIGHT
- — An index where every company counts the same, not by size.
CLOSE
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- BARGAIN
- — A good asset at a lower price due to passing fear.
- FALLING KNIFE
- — A drop that keeps going without bouncing.