How to Actually Review Your Investment Portfolio
You connected your brokerage account at some point, picked some funds, and then... moved on with your life. Maybe it was six months ago. Maybe it was two years ago. The market has moved, your income has changed, and somewhere in the back of your mind you know you should probably check on things — but you're not sure what you're even looking for.
That's the situation most investors in their 20s and 30s find themselves in. Not because they're bad with money, but because nobody ever taught them what a portfolio review actually involves. It sounds like something a wealth manager does in a mahogany office. In reality, it's a structured check-in that takes about an hour and can meaningfully change your financial trajectory.
This guide walks through exactly what to look at, why it matters, and what to do when you find something worth addressing.
Table of Contents
What Is a Portfolio Review?
A portfolio review is a systematic check of your investments to make sure they still reflect your goals, your risk tolerance, and your current life situation. It's not about timing the market or making dramatic changes — it's about catching drift before it becomes a problem.
The goal isn't to optimize every percentage point. It's to answer three questions: Is my portfolio still aligned with my goals? Am I taking on more or less risk than I intended? Are there any obvious problems I've been ignoring?
For most people, the answer to at least one of those is unsatisfying — not because they've done anything wrong, but because life changes and portfolios don't update themselves.
How Often Should You Review?
At minimum: once a year. Most financial professionals recommend an annual review, with a more thorough check during major life transitions — a new job, a raise, a marriage, a home purchase, or a significant market swing.
That said, "once a year" can easily become "I meant to do that." A practical approach is to tie your review to something predictable: tax season, your work anniversary, or the start of Q4. Whatever makes it an actual recurring calendar event.
Checking in more frequently isn't necessarily better. Checking your portfolio weekly can lead to reactive decision-making based on short-term noise. An annual or semi-annual review with intention beats monthly anxious checking.
The 5 Things to Check
1. Asset Allocation — Has Your Balance Drifted?
When you first invested, you (consciously or not) chose a mix of stocks, bonds, and other assets. That mix has likely shifted since then, simply because different assets grow at different rates.
If your stock holdings significantly outperformed your bonds over the past two years, your portfolio may now be more equity-heavy than you intended. This isn't inherently bad — but it's worth knowing. A portfolio that started as 80% stocks / 20% bonds might now be 90% / 10% without you noticing.
Check your current allocation against what you'd choose today given your goals and time horizon. If they've drifted more than 5–10 percentage points from your target, rebalancing is worth considering.
2. Concentration Risk — Are You Overexposed to One Thing?
This is the one most young investors miss. Concentration risk is when too much of your portfolio is tied to a single stock, sector, or company.
The threshold most advisors flag: more than 10% in any single stock is worth examining. More than 25% means you're taking on meaningful company-specific risk that diversification is supposed to eliminate.
For tech workers specifically, this problem is common and often invisible. You might own an S&P 500 index fund, have a 401(k) in a target-date fund, hold RSUs from your employer, and have some additional tech stocks in your brokerage — not realizing that the same 5-10 companies appear across all of them. As of early 2025, technology stocks make up roughly 41% of the S&P 500, meaning a "diversified" index fund already has significant tech concentration built in.1
Add company RSUs to that picture, and you may have a far larger bet on a single sector or company than you intended. The additional risk for tech employees: if your company runs into trouble, your employment income and your portfolio could both take a hit at the same time.
3. Expense Ratios — What Are You Actually Paying?
Every fund you hold charges an annual fee, expressed as an expense ratio. A 0.05% expense ratio on a Vanguard index fund costs you $5 per year per $10,000 invested. A 0.80% actively managed fund costs $80 per year per $10,000.
That difference sounds small. Over 30 years, it's not.
Pull up each fund in your portfolio and check its expense ratio. For broad index funds, a reasonable benchmark is under 0.20%. If you're holding actively managed mutual funds — especially ones inside a 401(k) — it's worth verifying what you're paying. Some employer 401(k) plans offer solid, low-cost options. Others have limited menus with higher-fee funds.
You don't necessarily need to swap everything out immediately, but you should know what you're paying.
4. Tax Situation — Are You Leaving Money on the Table?
Portfolio reviews aren't just about investments — they're an opportunity to check tax efficiency.
A few specific things to look at: Are you maximizing tax-advantaged accounts before investing in a taxable brokerage? (401(k) contributions reduce your taxable income now; Roth IRA contributions give you tax-free growth for later.) Do you have unrealized losses in a taxable account that could offset gains — a strategy called tax-loss harvesting? Have you recently received a raise or a bonus that pushes you into a higher bracket, making pre-tax contributions more valuable?
These aren't things to act on impulsively, but they're worth having on your radar during an annual review.
5. Goals Alignment — Does Your Portfolio Still Match Where You're Going?
A 25-year-old saving for retirement in 40 years should have a very different portfolio than the same person trying to save for a house down payment in 3 years. As your goals evolve, your portfolio should too.
Think about what's changed in the last year: income, timeline, major purchases, risk tolerance. If your situation has shifted meaningfully, your investment approach may need to shift with it. A portfolio built around a single retirement goal may need to accommodate shorter-term goals as you get older — and the risk profile for those two goals is very different.
Red Flags That Warrant Action
Not everything you find in a review requires a change. But some things do. Here are the signs worth taking seriously:
High concentration in a single stock (>10–15% of portfolio). Especially concerning if it's your employer's stock.
Significant allocation drift (>10% from your target). Usually means rebalancing is worth considering.
Expense ratios above 0.50% on funds where lower-cost alternatives exist in the same category.
Dormant cash. A large amount sitting in a money market or cash position that you didn't intend to leave there.
Overlapping holdings across accounts. Multiple accounts (401k, IRA, brokerage) heavily weighted toward the same companies or sectors.
Beneficiary designations that no longer reflect your intentions. Not strictly a portfolio issue, but easy to check and easy to miss.
How to Actually Do It
Here's a practical sequence for running your own portfolio review:
Pull up all of your accounts in one place. This is the biggest friction point — logging into three or four separate platforms. Aggregation tools that connect your accounts (like Astor) show your full picture in one dashboard.
Check your total asset allocation. What percentage is stocks, bonds, cash, and other? Note how this compares to your intended allocation.
Look at your top 10 holdings by value. Any single position over 10% of your total portfolio? Note it.
Check the expense ratio of every fund you hold. A quick Google search of "[fund name] expense ratio" works if your platform doesn't show it.
Verify your tax-advantaged contributions. Are you getting the full employer 401(k) match? Are you on track to hit your IRA contribution limit before year-end?
Write down one action item. A review that produces no action is better than no review, but identifying one concrete thing to address — even something small — makes the exercise meaningful.
Common Mistakes to Avoid
Reviewing too often and reacting to short-term noise. Markets are volatile by nature. Reviewing after every 5% swing leads to emotional decisions that tend to be the wrong ones. Annual is right for most investors.
Comparing yourself to "the market" without context. The S&P 500 return in any given year isn't a meaningful benchmark for your specific portfolio, which has its own mix of assets, time horizons, and risk tolerance. Focus on whether your portfolio is serving your goals, not whether it beat a headline number.
Treating every account in isolation. Your 401(k), Roth IRA, and taxable brokerage are all part of the same portfolio. Looking at each one separately misses how they interact — including concentration and asset location.
Making major changes right after a market drop. Reviews done during or right after a significant downturn tend to produce overly conservative decisions. The right response to a market drop depends on your time horizon, not on your current level of discomfort.
The Bottom Line
A portfolio review doesn't require a financial advisor, a finance degree, or even much time. It requires asking a few focused questions: Is my allocation where I want it? Am I concentrated anywhere I shouldn't be? Am I paying more than I need to? Am I getting the full benefit of tax-advantaged accounts?
The goal isn't perfection — it's awareness. Most investment mistakes happen slowly, through drift and inaction, not through dramatic blunders. A consistent annual review is how you catch those quiet problems before they compound into expensive ones.
If you want to run this analysis on your actual accounts without logging into each platform separately, Astor connects to your brokerage accounts and surfaces exactly these kinds of issues — concentration risk, allocation drift, and portfolio health scores — in one place.
Astor provides educational tools and information, not personalized financial advice. Consult a qualified financial advisor for guidance specific to your situation.
FAQ
How often should I review my investment portfolio? Most financial professionals recommend a full portfolio review at least once a year. Additional check-ins make sense after major life events — a new job, significant raise, marriage, or major market movement.
What should I look for when reviewing my portfolio? The five key areas are: asset allocation (has it drifted from your target?), concentration risk (are you over-exposed to any single stock or sector?), expense ratios (what are your funds charging?), tax efficiency (are you maximizing tax-advantaged accounts?), and goals alignment (does your portfolio still match your time horizon and objectives?).
What is concentration risk in a portfolio? Concentration risk occurs when too much of your portfolio is invested in a single stock, company, or sector. Most advisors flag any single holding above 10% of your total portfolio as worth examining. For tech workers with employer RSUs, this is a common and often overlooked issue.
Do I need a financial advisor to review my portfolio? Not for a routine check-in. A structured self-review using the steps above can surface most common issues — allocation drift, concentration, high fees, and gaps in tax-advantaged contributions. A financial advisor adds value for more complex situations: comprehensive tax planning, estate planning, or navigating a major financial transition.