Goodbye, for now
The Sandbox Daily (6.24.2026)
Welcome, Sandbox friends.
Before we jump into today’s topic, I must share an important personal note.
Tonight marks the final edition of The Sandbox Daily under its current name and structure.
As many of you know, change is part of every business – and ours is no exception. Over the coming days and weeks, there will be some changes to our firm and, naturally, to this newsletter as well. Exactly what that looks like is still being worked through, but I’ll be sure to keep you posted as plans come together. I will be resurfacing but under a new name (STC or SOT) and an unknown timetable.
For now, thank you for reading, sharing, and making this daily conversation such a rewarding part of my daily workflow. I am forever grateful for your time and support.
I’ve published 790 posts since 2022. Over that time, I’ve challenged myself in more ways than I can count. What started as an internal firm scratchpad of unworked ideas blossomed into something much brighter than I ever imagined.
I started this blog with ~5 readers (thanks mom and dad). Today I hit roughly 5,000 inboxes. To this day, this newsletter hits certain inboxes that I still have to pinch myself over: personal heroes of mine and strategists/analysts/traders/bloggers/reporters/friends/family that I hold the utmost respect for. For that, I’m truly grateful.
The Sandbox Daily has opened doors for live TV appearances on major cable networks, podcast appearances, invitations to the New York Stock Exchange, speaking engagements at conferences, networking opportunities all across the United States, sparked meaningful and lasting professional and personal relationships, and everything in between. Again, for that, I’m truly grateful.
Over the years, I’ve covered market developments in real time, addressed everyday personal finance topics, talked fundamentals and technicals, and shared personal stories of success and heartbreak. I’ve nailed certain things, and fallen short on countless others.
Some posts have resonated far more than others. Five posts stand far above the others; if you are interested, you can check them out here:
My wife is asking questions now...
A BIG welcome to the TCAF “Pounders” → this one changed the entire trajectory of this blog, a heartfelt thank you Sam Ro/Josh Brown/Michael Batnick
Whatever the name on the masthead, my goal remains the same: to provide thoughtful perspectives on the markets, personal finance, and the ideas that shape both.
So… this is goodbye, for now.
Now, onto today’s topic and what might be my favorite quote I’ve ever shared.
Today’s Daily discusses:
the trouble with financial rules of thumb
Let’s dig in.
Blake
Markets in review
EQUITIES: Russell 2000 +0.37% | Dow +0.35% | S&P 500 -0.10% | Nasdaq 100 -0.43%
FIXED INCOME: Barclays Agg Bond +0.49% | High Yield -0.03% | 2yr UST 4.398% | 10yr UST 4.848%
COMMODITIES: Brent Crude -0.51% to $72.69/barrel. Gold -3.02% to $4,017.6/oz.
BITCOIN: -4.08% to $60,827
US DOLLAR INDEX: +0.17% to 101.58
CBOE TOTAL PUT/CALL RATIO: 0.92
VIX: -4.41% to 18.63
Quote of the day
“Yesterday’s the past, tomorrow’s the future, but today is a gift. That’s why it’s called the present.”
- Bil Keane, American cartoonist
When market wisdom contradicts itself
In personal finance, one of the most significant – and perhaps underappreciated – pitfalls is the prevalence of maxims.
The truisms we rattle off that don’t gel with the average person.
On nearly every financial topic, there seems to be a pithy phrase ready to guide your decision-making.
Turn on financial television, scroll through social media, listen to market commentators, or chat with a seasoned investor, and you’ll hear them. These aphorisms are short, memorable, and often sound incredibly wise – as if they were handed down from some investing prophet on a mountaintop.
Wall Street, in particular, is obsessed with them.
Part of the appeal is understandable. Markets are complicated. There are millions of participants, endless streams of information, and an uncertain future. A catchy phrase provides a shortcut. It compresses a complicated idea into a sentence that can be remembered and repeated.
A good saying gives the illusion of certainty.
The problem is that shortcuts are often poor substitutes for actual thinking. What’s more, many of these sayings directly contradict one another.
Consider these two familiar rules of thumb:
“Never try to catch a falling knife.”
“Buy stocks the same way you’d buy any other product: when they’re on sale.”
The first would tell you to stand safely on the sidelines during a market decline. If prices are falling, wait. Let someone else absorb the downside risk.
The second would tell you to do exactly the opposite. If stocks are cheaper today than they were yesterday, that’s precisely when you should be interested. After all, nobody walks into a store and insists on paying full price for something they could buy at a discount.
So, which saying is correct?
The answer, of course, is that both can be correct – and both can also be wrong.
A stock that is down 10% may be a wonderful bargain. It may also be the first step toward a 50% loss. The saying itself doesn’t tell you which situation you’re facing. That requires analysis, judgment, and an understanding of what you actually own.
This isn’t unique to those two examples. The investing world is full of contradictory wisdom.
“Buy low and sell high.”
“Be fearful when others are greedy.”
“The trend is your friend.”
One encourages patience and consistency. Another encourages opportunism. One tells you to move against the crowd. Another tells you to follow it. Depending on the circumstances, each may contain a kernel of truth.
The larger lesson is that sayings are not principles. They are not investment processes. They are not strategies.
They are mental shortcuts.
The danger comes when investors mistake a memorable phrase for genuine wisdom. A saying can be useful if it reminds us of an important concept. It becomes dangerous when it replaces critical thinking.
In fact, one reason sayings persist is that they can always be retroactively explained. If the market rebounds after a decline, investors celebrate buying when stocks were “on sale.” If the market continues to fall, they remind you that you should never have tried to “catch a falling knife.” The saying that turns out to be correct is often determined after the fact.
Real investing is rarely that simple.
Most successful investors I know don’t rely on sayings. They rely on frameworks and a process. They have principles about valuation, diversification, risk management, time horizons, and asset allocation. Those principles may occasionally align with a popular saying, but they don’t depend on one.
A good framework helps you make decisions when conditions are uncertain. A saying merely gives you something clever to repeat.
So, the next time you hear a piece of market wisdom packaged into a catchy phrase, pause for a moment. Ask yourself whether it is actually helping you think through the situation – or simply helping you avoid thinking about it.
Because in investing, the most dangerous words are often the ones that sound the wisest.
Goodbye for now.
That’s all for today.
Blake
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Welcome to The Sandbox Daily, a daily curation of relevant research at the intersection of markets, economics, and lifestyle. We are committed to delivering high-quality and timely content to help investors make sense of capital markets.
Blake Millard is the Director of Investments at Sandbox Financial Partners, a Registered Investment Advisor. All opinions expressed here are solely his opinion and do not express or reflect the opinion of Sandbox Financial Partners. This Substack channel is for informational purposes only and should not be construed as investment advice. The information and opinions provided within should not be taken as specific advice on the merits of any investment decision by the reader. Investors should conduct their own due diligence regarding the prospects of any security discussed herein based on such investors’ own review of publicly available information. Clients of Sandbox Financial Partners may maintain positions in the markets, indexes, corporations, and/or securities discussed within The Sandbox Daily. Any projections, market outlooks, or estimates stated here are forward looking statements and are inherently unreliable; they are based upon certain assumptions and should not be construed to be indicative of the actual events that will occur.
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