Best and Worst Weeks for the Stock Market

Most people obsess over timing the market. I built a system that ignores it.

But the question still haunts everyone eventually:

“Is there a best week to invest?”

The short answer is no.

The long answer? It’s complicated and dangerous.

This post walks through the data, exposes the psychological traps, and shows you why timing the week will never beat disciplined behavior.

Why People Obsess Over Timing the Market

Timing feels powerful.

It feels like control.

Like you’re smarter than the crowd.

And in a world where one viral trade can make someone rich overnight, everyone wants the secret calendar.

They Google:

• Best time to buy stocks

• Worst days to invest

• When does the market usually go up

And that’s how they fall into the most seductive trap in investing:

Confusing probability with performance

Yes, some weeks are more positive than others.

Yes, seasonality exists.

But without discipline, even the “best week” can destroy your long-term results.

Let’s look at the data and then rewire the mindset.

The Weekly Pattern Nobody Talks About

Here’s a breakdown of average S&P 500 returns by week number (Week 1 through Week 52), based on historical seasonality and index behavior.

Average S&P 500 Return by Week Number

This chart reveals how each week of the year has historically performed. But remember, no week beats a consistent system.

Behavioral Standouts:

• Week 1 (January): Strong optimism and new money flows

• Week 17 (April earnings season): Historically strong

• Week 47 (Thanksgiving): Gratitude rally effect

• Week 52 (late December): Santa Rally continuation

Hidden Red Flags:

• Weeks 34 to 36 (late August and early September): Low volume and pre-Fed anxiety

• Week 39 (late September): End-of-quarter rotation

• Week after FOMC meetings: Volatility and uncertainty

But here’s the real insight most investors miss:

Even the best week cannot save a broken process

Why This Info Is Dangerous Without Discipline

Let’s say Week 17 has an average +1.2 percent return.

That sounds great.

But here’s what really happens:

• People wait for it

• They pile in emotionally

• If it works, they sell too early

• If it fails, they panic and abandon the plan

It’s not the week that failed.

It’s their lack of a system.

The market rewards behavior, not prediction

Even if you knew all 52 weeks, you would still lose to someone who buys every week for 20 years without emotion.

That’s what I do.

What I Do Instead

I invest every single weekday the market is open.

That’s 252 days per year.

Fifty dollars a day into Strategy (MSTR).

No matter what the headlines say.

And starting in Week 13, I added another layer:

• One hundred dollars every Monday to cover weekends

• Fifty-dollar manual buys on holidays

• Total: 365 days of investing

Because Bitcoin trades 24 hours a day, 7 days a week.

And so does my discipline.

I don’t care what week it is.

I don’t chase green candles.

I don’t flinch at red ones.

My portfolio is built on behavior, not prediction.

If you want to build wealth, forget about Week 17.

Build a streak. Track your consistency.

Start here:

✅ Robinhood - Start your daily investing streak

✅ Acorns - If you want a passive version of this discipline

✅ Webull - If you prefer advanced features

And when BakoSignal is live, it will help you filter signal from noise with real behavior-first conviction.

🧠 Behavior over prediction. Streak over signal. System over stress.

You Might Also Like

• Best and Worst Months for the Stock Market

• Why I’m Betting on One Stock for 20 Years

• Week 1 of My 50 Dollars a Day MSTR Journey

• Week 14: The Boredom Is the Breakthrough

Final Takeaway

The worst week to invest is the one you skip.

The best week is the one you show up.

Again. And again. And again.

One week won’t make your fortune.

But one system can.