Latest / The Day Trading Podcast with Fexingo: Active Trading, Charts, and Short-Term Market Strategy / How Day Traders Read the VIX and Volume Divergence Signal
Transcript
- Lucas: So the VIX closed today at 17.65, down about nine and a half percent over the last five sessions. Meanwhile, the S&P 500 added another one percent to hit 7,440. That's a textbook divergence — volatility collapsing while prices grind higher. But what I'm watching isn't just the VIX level — it's the volume behind that rally. Luna: Volume has been tapering off all week. You can see it on the daily SPY chart — each up candle is getting shorter on the volume bars. Lucas: Exactly. That's the divergence within the divergence. The VIX is falling, which normally signals complacency, but if volume is also declining, it suggests the buying pressure is thinning out. Institutional players aren't piling in — they're letting the rally drift on auto-pilot. Luna: And that's the kind of setup where a sharp reversal can catch people off guard. If we're listening to this and thinking about positioning, what's the specific signal to watch? Lucas: Yeah, and before we go deeper — you know, we deliberately don't run ads on these episodes. If that approach has helped you think about a trade or a risk differently, and you want to support that choice, the link is buy me a coffee dot com slash fexingo. No pressure ever — it just keeps the conversation ad-free. Now, back to the setup. Luna: Right. So the signal — you're talking about a vix volume divergence combined with a specific volume threshold? Lucas: Exactly. I look for the VIX to drop below its 10-day moving average while the S&P 500's 5-day average volume drops below its 20-day average. When those two conditions align, the rally is running on fumes. We saw that exact pattern last Wednesday before the Fed minutes. Luna: And the VVIX — the VIX of the VIX — was also down ten point eight percent over five days to 88.71. That's another layer of confirmation that volatility expectations are compressing across the board. Lucas: Right. When the VVIX drops faster than the VIX, it tells you the options market is pricing in less tail risk. Traders are selling premium, not buying protection. That's fine until it's not. Luna: So the question becomes: what triggers the reversal? Is it a specific catalyst, or just the market running out of buyers? Lucas: It's usually a catalyst that catches the thin order book. Last week, the SpaceX Nasdaq-100 rebalancing created a massive one-day volume spike that masked the underlying decline. If you strip out that day, average volume was actually shrinking for two weeks before. Luna: And that rebalancing was a one-off — index funds had to adjust positions. So the real volume trend was hidden. Lucas: Exactly. That's why you have to use a volume filter. I use a 20-period simple moving average on the daily volume of SPY, and I mark any day where volume is more than two standard deviations above that average. Those are the 'noise days' — I exclude them from my trend calculation. Luna: And what did that filtered volume look like going into this week? Lucas: Excluding the rebalancing day, the filtered 5-day average volume was about 15 percent below the 20-day average. That's a significant divergence. Combine that with the VIX at 17.65 — which is below its 10-day of around 19.2 — and you have both conditions met. Luna: So if you're a day trader, how do you trade that? Are you looking for a short entry on break of a key level? Lucas: I wait for a failed breakout. If the market makes a new high on even lower volume than the prior up-day, that's my cue. I'll put a sell stop below the prior day's low. The target is usually the VIX to reclaim its 10-day — which would be a move back above 19, implying about a 1-2 percent S&P drop. Luna: And the risk? Because if volume picks up again — say, on a macro headline — that divergence can persist. Lucas: Right. The risk is that the divergence continues to stretch. You've got to keep the position small — half your normal size. And if the VIX starts climbing while volume also climbs, that's a reversal of the divergence — you close the trade immediately. Luna: So it's not a binary signal. You're reading the relationship, not a single indicator. Lucas: Exactly. It's a mosaic. The vix volume divergence is one piece. The VVIX compression is another. And the volume spike from the rebalancing is a third. When they all point the same way, the probability shifts. Luna: We saw a similar setup back in March, before the VIX spiked from 15 to 22 in three days. Volume had been drying up for two weeks. Lucas: Yeah, March was textbook. The filtered volume was 20 percent below average, and the VIX was at 14.8. Then the regional bank headlines hit, and the market dropped 3 percent in two sessions. The divergence doesn't tell you when — it tells you the market is fragile. Luna: So for someone listening tomorrow morning — what's the first thing they check? Lucas: Open a 5-minute chart of SPY. Look at the first 30 minutes of volume relative to the prior day. If volume is below the 5-minute average from the last five days, and price is drifting up, the divergence is still intact. If you see a volume burst on a down candle, that's your alert. Luna: And if the VIX opens higher but volume is normal? Lucas: Then the divergence is resolving — the VIX is catching up to the volume decline. That's actually a healthy sign. It means the market is acknowledging the risk. The dangerous divergence is when the VIX stays low while volume keeps falling. That's the 'calm before the storm' pattern. Luna: I also watch the VIX futures curve. When the front-month contango flattens — say, the spread between the first and second month narrows to under 0.5 — that often precedes a volatility pop. Lucas: Good call. That contango compression is a fourth confirmation. Right now, the front-month VIX future is at about 18.1, and the second month is at 19.0 — so a spread of 0.9. Not yet alarming, but if that tightens to 0.5, it's another red flag. Luna: So we have multiple layers pointing to the same conclusion: the rally is thinning out, and a reversal becomes more likely, but the timing is uncertain. Lucas: Exactly. And that's why day traders have an edge — we can react to the intraday signal as it forms. We don't need to predict the day; we just need to recognize the pattern when it triggers. Luna: And if the divergence breaks — say volume picks up tomorrow on an up day — does that invalidate the bearish thesis? Lucas: Completely. If we see a day where SPY volume is above the 20-day average and price closes green, the divergence is resolved. I'd flip to neutral and look for the next setup. The key is being flexible — the market will tell you when it's wrong. Luna: One last thing — what about the sector level? Any specific groups showing this divergence more clearly? Lucas: Technology, interestingly. The XLK volume has been declining faster than the broad market. Some of that is the SpaceX rebalancing effect, but even excluding that, the volume trend is weaker. The Nasdaq composite is up 0.9 percent in five days, but the average daily volume is down about 12 percent. That's the most pronounced divergence among the major sectors. Luna: So if a reversal comes, tech could lead to the downside. Lucas: That's the bet. And with the VIX at 17.65, there's room for it to move back toward 20 without being extreme. That would be about a 2-3 percent S&P drop — manageable for a day trade. Luna: Alright. So tomorrow morning, I'll be watching volume on the first 30-minute SPY candle, the VIX level relative to its 10-day, and the VIX futures contango. If the divergence persists, I'll have a sell stop ready. Lucas: And if volume surprises to the upside, you wait. That's the discipline. The divergence isn't a trade — it's a condition. The trade comes when the condition breaks. Luna: Good way to put it. Let's see what tomorrow brings.