Every day on SPY has its own personality. Tuesday can be dead. Wednesday is unpredictable. Friday is a trap. But Monday… Monday usually delivers.

Here's why I specifically look forward to Mondays for 0DTE setups.

The market stays closed over the weekend, so two days of headlines and market developments can affect Monday’s opening gap and early price action.

That doesn’t mean I assume Monday will trend. My 0dte options strategy is to use that context and then wait for price, volume, and structure to confirm the trade.

This Monday resistance rejection at 9 EMA [check image 1]

SPY pushed into a horizontal resistance area I had already marked. The 9 EMA met price near the same zone, adding another layer of resistance.

I didn’t chase the initial move or try to predict the exact top. I waited for price to retest the area, reject it, and confirm the bearish direction before entering.

From there, I trailed the position while the bearish structure remained intact. If price had reclaimed the resistance area and held above it, the setup would have been invalidated.

So my Monday formula is a combination of: 

• A pre-marked horizontal resistance level
• A rejection near the 9 EMA
• Bearish follow-through after the retest
• The 15-minute opening range as an additional structure level
• A clear invalidation point above the setup

How I use the 15-minute opening range

In my experience the 15 minute opening range on Monday tends to be more decisive. Price breaks one side and follows through instead of immediately reversing back into range.

If price breaks the range and immediately moves back inside it, I treat that as a warning that the session may be choppy.

That filter is especially useful when trading an eval account or funded account. With 0DTE options, a false breakout can move the premium quickly, so protecting the account matters more than forcing a Monday trade.

Sharing my Monday pre-market and opening checklist

• Friday’s close: Is SPY opening above, below, or near it?
• Opening gap: Is there a meaningful gap, and is price holding it or beginning to fill it?
• Weekend and scheduled news: Are there any macroeconomic releases or major headlines affecting the open?
• First 15-minute volume: Is participation holding up compared with a normal opening period, or fading quickly?
• Opening range: Does price break and hold outside the range, or repeatedly return inside it?
• EMA alignment: Are the 9 and 21 EMAs supporting the direction of the trade?
• Invalidation: What specific price action proves the setup wrong?

Session result [image 2- p&l]

The session finished at +$356.10 across four recorded trades.

Still, nothing is a guarantee. Some Mondays are dead. Some are choppy. Not every week starts with a clean directional move.

But if I had to pick one day to trade 0DTE for the rest of my life Monday every time. The conditions are just better on average. More volume, more follow through, cleaner setups.

What's your favorite day to trade and why?

I’ve been trading SPY 0DTE options on a Vanquish eval account, and one of the easiest ways I’ve found to give back progress is forcing trades during lunchtime chop. 

See the chart? It looks tradeable. For my strategy, it usually isn’t.

This is the part of the day that silently kills 0DTE accounts. It’s normally a series of weak entries while SPY moves sideways and the 0DTE option continues losing time value.

What the dead zone actually is

For me, the dead zone most often appears between roughly 11:30 a.m. and 1:30 p.m. ET.

That isn’t a fixed rule for every session. News, unusually high volume or a strong trend can keep the market active through lunch. But on an ordinary day, volume and volatility often decline around midday, leaving smaller moves and less follow-through.

The candles still move. Price touches important levels and the shorter EMAs cross, making it look like several setups are forming.

The problem is that many of those signals fail almost immediately.

[as the image shows: SPY moving sideways during lunch. The 9 EMA and 21 EMA repeatedly converge and cross while price struggles to sustain a move.]

How I identify SPY lunchtime chop

I look for several conditions together – the 9 EMA and 21 EMA are flat, tangled or repeatedly crossing, price keeps moving above and below the same levels, breakouts fail to produce follow-through, candles become smaller or alternate direction frequently, and volume is noticeably lower than it was during the morning session.

One EMA crossover by itself isn’t enough. When several of these conditions appear together, I treat the market as directionless until price proves otherwise.

This matters even more when buying SPY 0DTE options. If SPY stays inside a narrow range, the contract can continue losing value from theta while the directional move you expected never arrives.

The trap I kept falling into

I would have a good morning or at least a manageable one but remain at my desk simply because the market was still open.

SPY would move toward a level, I’d enter what looked like a breakout and price would reverse. Then it would move the other way and tempt me into another entry.

Four or five mediocre trades later, the morning’s progress would be gone.

It was rarely one terrible trade. It was repeated exposure during market conditions that didn’t suit my strategy.

What I do now

If the short EMAs are tangled, volume has faded and breakouts keep failing, I close the platform.

If I’m green, that protects my morning gains. If I’m red, it prevents me from trying to recover the loss. Either way there's no good reason to be actively trading between 11:30 and 1:30.

That rule has become particularly important in my Vanquish options evaluation. Every unnecessary midday loss reduces the room I have before reaching the eval account’s maximum drawdown. If I eventually move to a funded account, I’d apply the same risk-management rule there.

I may check the chart again around 2 p.m. ET, but I only trade if clear direction and volume have returned. Some days they do. Many days they don’t, and that’s fine.

The simple rule I use

Tangled short EMAs + declining volume + failed breakouts = no trade.

You don't need a clock to tell you when lunch is, your chart will tell you. When the EMAs stop making sense and price is bouncing randomly between levels, that's your cue to step away.

Do you guys use a fixed lunchtime cutoff or wait for volume and market structure to tell you when to stop?