July was brutal.
In a single month, my net worth fell by roughly $800,000 as AI stocks sold off. That is not a typo. It is more money than some people will earn over several years, disappearing from a spreadsheet in a matter of weeks.
Of course I felt it. Anyone who says an $800,000 decline means nothing is either detached from reality or pretending. There were moments of disbelief, discomfort and frustration. I wondered whether I had missed something important. I reviewed my positions more than once.
But I did not panic.
I did not sell everything, abandon my long-term strategy or decide that investing was suddenly a mistake. Instead, I went back to the reasons I owned each company, added selectively to positions where my conviction remained intact and rebalanced parts of my portfolio where the risk had become too concentrated.
That distinction matters. Staying calm does not mean doing nothing. It means making decisions based on evidence and portfolio construction—not fear.
The short answer: what should you do when your portfolio is down?
When an investment portfolio drops sharply, first separate a falling share price from a broken investment thesis. Check whether the company’s fundamentals, balance sheet, competitive position or long-term opportunity have materially deteriorated. Then review your time horizon, cash needs and position sizes. Avoid panic selling, but do not average down automatically. Add only when the original thesis remains sound and the position still fits your risk limits.
That is the framework I think I should use after my net worth dropped $800,000.
What losing $800,000 in a month actually feels like
The number is shocking, but the experience is quieter than most people imagine.
There was no dramatic phone call or single moment when $800,000 vanished. The decline accumulated across several positions. One red day became a bad week. A bad week became a punishing month. Every time I refreshed my portfolio, the figure was lower.
At first, the mind tries to translate the loss into real life. That money could buy a home in some cities. It could fund years of household expenses. It could pay for my daughter’s future education many times over. Thinking this way makes a portfolio decline feel much more painful than a percentage on a screen.
Then comes self-doubt.
Was I too concentrated in AI stocks? Had I mistaken a powerful technological trend for a guaranteed investment return? Was I protecting an old thesis because I had become emotionally attached to it? These are uncomfortable questions, but they are useful ones.
What I did not feel was an urgent need to press the sell button simply to make the discomfort stop. Selling can create emotional relief because it ends the uncertainty. Unfortunately, relief is not the same thing as a good investment decision.
Why AI stocks sold off in July
The decline did not happen in isolation. AI-linked stocks experienced repeated bouts of selling in July 2026 as investors questioned stretched valuations and how money was circulating through the AI ecosystem, according to Reuters.
The market was also becoming less patient with the enormous sums being spent on AI infrastructure. MSCI noted that late-July earnings releases helped trigger a wider technology sell-off amid concern about AI spending and negative free cash flow.
None of that should be dismissed. A transformational technology can still produce overpriced stocks. A company can grow rapidly and remain a poor investment if its valuation already assumes near-perfect execution. Capital expenditure can build a durable competitive advantage, but it can also destroy shareholder value if future returns do not justify the spending.
The sell-off therefore forced me to revisit three separate questions:
- Is the long-term AI opportunity still real?
- Are the companies I own likely to capture that opportunity?
- Am I paying a sensible price for the expected growth and risks?
The first answer can be yes while the second or third is no. Believing in AI does not require believing in every AI stock at any valuation.
Why I did not panic sell
My time horizon did not change in July
I did not buy these investments because I expected a smooth rise every month. I bought them because I believe AI and the infrastructure supporting it will create substantial value over many years.
A falling share price does not automatically invalidate that view. If my expected holding period is measured in years, a difficult month is important mainly when it reveals new information about the underlying business.
This is where time horizon matters.
I distinguish volatility from permanent loss
An unrealised loss is economically real: my portfolio was worth $800,000 less. I do not dismiss that by calling it “just a paper loss.” If I had needed to liquidate the portfolio at that moment, the lower value would have mattered immediately.
But a lower quoted price is not always a permanent destruction of capital. Permanent loss is more likely when a business is impaired, debt becomes unmanageable, shareholders are heavily diluted, competitive advantages disappear or the investor paid a price that future cash flows cannot support.
Volatility is the market changing its opinion. Permanent loss is the investment failing to recover its economic value. My job is to determine which one I am facing—not assume every decline is a bargain and not assume every red screen is a disaster.
My household finances did not depend on selling those shares
One reason I could remain calm was that I was not relying on the affected positions to pay next month’s bills.
This is an underrated part of risk tolerance. Your willingness to hold through a decline matters, but so does your ability to do so. An investor can have strong conviction and still be forced to sell at the worst possible time if the portfolio is also the emergency fund.
Cash reserves do not maximise returns in a bull market. They buy time and flexibility when markets become hostile. Because my immediate expenses were not tied to the daily value of my AI holdings, I could evaluate the portfolio without a deadline imposed by rent, mortgage payments or household costs.
Panic selling creates a second decision
Selling during a decline is not one timing decision. It is two: when to get out and when to get back in.
Strong market days often occur close to the worst ones. Vanguard’s analysis found that missing only a small number of the market’s best days can materially reduce long-term results. This does not mean investors should hold every company forever. It means moving an entire portfolio to cash because the market feels frightening can introduce a new and difficult risk: failing to participate in the recovery.
I would rather make company-specific decisions than an emotional, all-or-nothing bet on the next direction of the market.
What I did instead to react to this
1. Reviewed every investment thesis
I asked what had actually changed since I bought each stock.
Was revenue growth slowing for structural reasons? Were customers cutting orders? Had management changed its guidance? Was a competitor eroding the company’s advantage? Had the balance sheet weakened? Was dilution becoming excessive? Or had the stock mainly fallen because investors were reducing exposure to the entire AI trade?
This review is not an exercise in finding reasons to keep everything. If the facts no longer support a position, I am willing to cut the loss. “Long term” should never become an excuse for refusing to admit a mistake.
2. Added selectively to higher conviction stocks
I added to positions where three conditions were met: the long-term thesis remained intact, the valuation had become more attractive and the resulting position would not exceed my risk limit.
That last condition is critical. A stock being cheaper than it was last month does not mean it is cheap. Nor does a 30% decline prevent another 50% decline. Averaging down without reassessing the business is simply increasing exposure to the same unanswered risk.
I also did not deploy all available cash at once. Staggering purchases leaves room for new information and further volatility. It may mean missing the exact bottom, but identifying the exact bottom is not part of my investing process.
3. Rebalanced the portfolio
The sell-off exposed where my portfolio had become too dependent on one theme. Even if I remain optimistic about AI, several AI-related holdings can behave like one oversized position when sentiment turns.
Rebalancing is not a prediction that the theme is finished. It is an acknowledgement that conviction and position size are different things. I can believe a company has exceptional potential while still limiting how much damage it can do to my overall net worth.
Diversification is spreading money among investments to reduce risk, including across industries and asset classes. Diversification will not prevent losses, but it can reduce the chance that one company, sector or narrative determines an investor’s entire financial future.
For me, rebalancing meant reviewing concentration across companies, subsectors and risk factors—not simply counting the number of tickers I owned.
4. Focused on what I could control
I cannot control interest rates, geopolitics, investor sentiment or tomorrow’s opening price. I can control:
- how much cash I keep;
- how large each position becomes;
- whether I use leverage;
- the quality of the businesses I own;
- the price I am willing to pay;
- how often I trade; and
- whether fear changes my process.
When the portfolio is falling, focusing on controllable decisions is more useful than making confident forecasts about what the market will do next.
The uncomfortable truth about a large portfolio
As a portfolio grows, the dollar swings become harder to ignore.
A 10% decline on $100,000 is $10,000. The same percentage on $2 million is $200,000. The investment risk may be identical in percentage terms, yet the emotional experience is completely different because the larger figure can be translated into houses, salaries and years of expenses.
This is part of the price of compounding. If I want the portfolio to grow by hundreds of thousands—or eventually millions—in strong periods, I must accept that it can move by similar amounts in the other direction. I cannot reasonably demand equity-like upside while expecting savings-account stability.
That does not mean every level of volatility is acceptable. It means I should judge risk in relation to my plan, not only by the size of the latest red number.
What I learned from watching my net worth fall $800,000
The month reinforced several lessons.
First, risk tolerance is easy to overestimate when markets are rising. A real drawdown reveals more than any questionnaire.
Second, conviction must be supported by liquidity. Cash gives a long-term thesis time to work and creates the option to buy when prices fall.
Third, thematic diversification can be deceptive. Owning several stocks tied to the same AI spending cycle is not the same as owning independent sources of return.
Fourth, a portfolio review should be symmetrical. I should examine a falling stock as critically as I examine one that has doubled. Neither a lower price nor a higher price proves that my thesis is correct.
Finally, a net-worth figure is a measurement—not an identity. Losing $800,000 in market value did not erase the knowledge, habits and process that helped me build the portfolio. It also did not reduce my responsibilities to my family or change the reasons I invest.
Final thoughts
July hurt. I will not pretend otherwise.
I am not sharing this because I think I handled everything perfectly, and I am certainly not suggesting that anyone should copy what I did. Every investor has a different portfolio, financial situation, time horizon and tolerance for risk. I may also look back later and realise that some of my decisions were wrong.
I am recording the experience because it helps me think more clearly. Instead of reacting immediately to the $800,000 decline, I reviewed the facts as calmly as I could. I added selectively where my conviction remained, rebalanced parts of the portfolio and kept enough liquidity to avoid being forced into a decision. Those actions may or may not produce the best outcome, but they were consistent with the process I had established before the sell-off.
My biggest learning is that staying calm does not mean being certain. I do not know whether the market has bottomed, whether every position will recover or whether I will need to make further changes. I only know that panic was unlikely to help me make better decisions.
This post is therefore a record of where my thinking stands today—not a lesson on what other people should do. If the experience eventually proves me right, I hope I remember the discipline it required. If it proves me wrong, I hope I am equally willing to record that, learn from it and adjust.
This article reflects my personal experience and is for general information only. It is not financial advice or a recommendation to buy or sell any security. Investing involves risk, including the possible loss of principal.
Frequently asked questions
Is it normal for a stock portfolio to drop sharply?
Yes. Equity portfolios can experience substantial short-term declines, especially when they are concentrated in volatile sectors or individual growth stocks. The size of an acceptable decline depends on your time horizon, diversification, cash needs and capacity for loss.
Should I sell when my portfolio is down?
Do not decide based only on the price decline. Review why each investment fell and whether its underlying thesis remains intact. Selling may be appropriate when fundamentals have deteriorated, the position is too large or you need to reduce risk. Panic selling solely to escape discomfort can lock in a loss and make it difficult to re-enter.
Is averaging down a good strategy?
Averaging down can improve returns if the business remains sound and the valuation is attractive. It can also magnify losses when the thesis is wrong. Before adding, reassess the company, valuation, balance sheet and resulting position size. Never buy more merely because the current price is below your purchase price.
How can I stay calm during a stock market sell-off?
Keep near-term spending money outside volatile investments, define position-size limits in advance, review the original investment thesis and reduce how often you check prices. A written plan makes it easier to distinguish a rational portfolio change from an emotional reaction.
What is portfolio rebalancing?
Portfolio rebalancing means adjusting holdings toward a target asset allocation or risk level. It can involve trimming positions that have become too large and adding to underweight areas. Rebalancing is intended to manage risk; it is not a guarantee of higher returns.
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