Another pro tip is that Fibonacci levels are a huge benefit for price discovery whenever price enters into uncharted territory.
For example, if a stock is on a tremendous bull run and making new all-time highs, Fibonacci extension levels can help approximate good levels to take profits or to trail stop-losses, each time price surpasses a new Fibonacci level.
On the flip side, for IPOs that have fallen below their initial offering price, Fibonacci retracement levels can help price discovery to the downside by extrapolating bottoms. For IPOs that have fallen below their initial offering price, draw a Fibonacci retracement beginning at the highest price ever achieved and ending at zero. When the price stops underperforming the market and begins to consolidate at a Fibonacci retracement level, the price has likely bottomed. Even if one is wrong, these levels make for great risk-to-reward entry points.