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IV Crush Alert Guide

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Understand the elevated-volatility-rank alert, its direction and score, and the checks needed before interpreting option repricing.

The stock may move as expected without the option gaining as expected. This radar flags elevated implied-volatility rank so you consider changes in volatility as well as stock direction. It warns about possible option repricing; it does not establish that volatility has begun collapsing or that a particular event will occur.

Core principle: Inspect the source fields and timestamp before interpreting any label or score.
Options Radars illustration highlighting the IV Crush signal family
The falling volatility curve represents possible repricing after uncertainty resolves. It does not predict the underlying's direction or the size and timing of a volatility change.

Use the page controls and filters

Select results

Use symbol, direction, period and minimum score, then choose page size. Favorites-only shows your saved items.

Radar-specific filters

Inspect the IV Rank filter for this radar. Start with one condition and broaden an empty search.

Sorting and pages

Choose the sort column and direction, then navigate result pages. The first page is not necessarily the complete result set.

When results are absent

Distinguish empty results from an error or a plan lock. Broaden filters for an empty list, retry errors and inspect plans for locked access.

Fields and concepts

IV Rank and score

The row shows IV Rank, and its score equals that reading. Here, rank is the percentage of earlier daily median-IV readings below today's median IV. For example, 80 means today's reading exceeds 80% of the prior readings used. It is not raw IV or a probability of a decline. The symbol qualifies at the radar's configured rank threshold; insufficient history leaves rank unavailable.

Why is direction bearish?

Bearish refers to the volatility decline being warned about, not a forecast that the stock will fall. An alert can appear while the stock rises or falls. The bearish direction filter selects this classification, not a stock-price forecast.

Volume ratio and call/put premium

These figures provide surrounding options-activity context. They do not replace IV Rank or establish that participants share one direction.

Signal time

Check when the condition appeared. Option prices and volatility may have changed since then; an older alert does not establish current conditions.

What needs a separate check?

Realized stock volatility, event dates and volatility differences between expiries are not calculated columns in this row. Check the event source and open the chain to compare contract IV, expiry, bid and ask.

Review workflow

  1. Read IV Rank, score and signal time first.
  2. Remember that bearish refers to volatility; inspect stock direction independently on its chart.
  3. Verify the event date at its source, then compare contracts, expiries and liquidity in the chain.
  4. Consider price, volatility and time together; correct stock direction alone does not explain the option's value.
  5. Review again after news or a large move; do not assume the earlier alert still applies.

Useful supporting context

  • A clearly identified event and concentrated near-term premium.
  • IV elevated across reliable, liquid strikes rather than one bad quote.
  • A coherent term-structure difference with current timestamps.
  • Scenario analysis that includes volatility and time decay.

Cautions

  • Comparing raw IV across unrelated symbols without context.
  • Assuming elevated IV must fall immediately.
  • Using illiquid strikes or stale quotes to infer a surface.
  • Ignoring gap risk and the fact that realized movement may exceed priced movement.

Risk and limitations

Elevated IV can rise further, remain high, or fall by less than expected. The alert identifies pricing context and does not recommend buying or selling premium or any particular strategy.

Related guides

Review an IV-crush candidate around its event

The alert is a volatility-risk warning. It is most useful when the contract's IV, expiry, expected event, and post-event repricing are reviewed together.

  1. Identify the catalyst and whether it occurs before or after the selected expiry.
  2. Compare front-expiry IV with later expiries instead of judging one absolute IV number.
  3. Check premium, spread, DTE, and expected move to estimate how much volatility is already priced.
  4. Model the case where direction is correct but IV contracts faster than delta gains.
  5. Recheck after the event because the alert can remain visible while the repricing it warned about is already complete.

Page components explained

Narrow the signals

Filter by stock, period, price or the available signal criteria. Start broad and add conditions gradually. The timeframe belongs to the signal, while the date range controls when signals appeared.

Period, timeframe and direction

Use the period to choose recent or older signals, the timeframe to choose the candle scale, and direction to separate bullish and bearish readings. These settings answer different questions.

Read the signal list

Start with symbol, signal time and timeframe, then read direction and the radar-specific details. Open a signal to inspect it on the chart. Scores are ranking aids, not measured win probabilities.

Saved signals and watchlists

Favorites retain specific signals for review. A watchlist tracks stocks and can include many signals for each one. Check which control you are using before narrowing the list.

Supporting context

These switches keep signals with the selected news, block-volume, compliance or options context. Presence of extra information is not proof that the signal is stronger or that all sources agree.

Inspect a signal

Compare the signal marker with the price at that time and the moves that followed. Confirm the timeframe and timestamp. A historical chart shows what happened; it does not guarantee the next signal will behave the same way.

Automatic refresh

Refresh checks for new readings. It does not make an old source current. Check the reading's timestamp and any warning before using it.

Language

Use the flag to switch the interface language. Check the currency shown on subscription and payment pages after changing language; trading symbols keep their original spelling.

Light and dark mode

Choose the appearance that makes text and chart details comfortable to read. Changing the theme affects the display, not the underlying data or signals.

Page layout

Use this control to change the available page layout. It changes how much space the interface uses, not the meaning of the displayed values.

Fullscreen

In the signed-in app, expand the site to gain more room for charts and tables. Use the control again or Escape to leave browser fullscreen.

Notification bell

Review recent notifications and their timestamps here. The badge counts unread notifications; it is not a count of unreviewed trading opportunities. Delivery channels and rules are managed in alert subscriptions.

Account menu

Open account settings, subscription details and other personal links here. Use sign out when you finish on a shared device.

Site navigation

Choose a tool from the menu: watchlists organize stocks, screeners narrow them down, and radars find particular patterns. On a small screen, use the menu button to reveal the links.

Last updated: 2026-09-13