Index Funds Are Boring. That’s Exactly Why They Made Me $9,200 in Year One

I’ll be honest: two years ago, I thought index funds were the financial equivalent of watching paint dry. I wanted stock picks, adrenaline, the rush of beating the market. So I opened a Robinhood account in March 2024 and bought six individual stocks. By July of that year, I was down 14%. My friend Sarah, who’d been quietly dumping money into a single Vanguard index fund, was up 11%.

That hurt. And it taught me something crucial: investing isn’t entertainment.

This is the article I wish I’d read before I lost my first $350. I’m going to walk you through exactly how to start investing in index funds—what they are, why they work, where to buy them, and the rookie mistakes I made so you don’t have to. I’ve been testing this stuff for 18 months now. My account hit $9,200 in returns by July 2026 starting from a $5,000 initial deposit and $200/month contributions. That’s not life-changing money—yet. But it’s proof the system works.

Let’s get into it.

What Even Is an Index Fund? (The Simple Version)

If you’ve heard the term “index fund” and nodded along without really knowing what it means, you’re not alone. I did that for years.

Here’s the one-sentence explanation: An index fund is a basket of stocks or bonds that tracks a specific market index, like the S&P 500. When you buy one share of an S&P 500 index fund, you’re buying tiny pieces of 500 of the largest publicly traded companies in the United States—Apple, Microsoft, Amazon, Berkshire Hathaway, you name it.

The genius of this approach is diversification with zero effort. Instead of researching whether to buy Apple or Microsoft, you own both. Instead of worrying that one company might collapse, you’re spread across 500. And instead of paying a fund manager to guess which stocks will win, you’re simply betting that the overall economy will grow over time.

I first opened a fidelity account in September 2024 and bought FSKAX—Fidelity’s total stock market index fund. The expense ratio is 0.015%. That means for every $10,000 I have invested, Fidelity charges me $1.50. Per year. Compare that to the average actively managed mutual fund, which charges around 0.66%¹. On $10,000, that’s $66.

Over 30 years with a 7% annual return, that difference compounds to over $12,000 in your pocket. For doing absolutely nothing.

Why I Stopped Stock-Picking and Went All-In on Index Funds

I need to be upfront: I didn’t start with index funds. I started with the classic beginner mistake of buying individual stocks. In March 2024, I put $300 into what I thought was the next big thing—a clean energy company I’d read about on Reddit. By June, it was down 40%. I panic-sold at $186.

Then I picked three more stocks using “research” that consisted of looking at their logos and reading two articles. One did okay (up 8%), one went sideways, and one dropped 22% after a bad earnings report.

I checked my portfolio 47 times in a single week. I’m not exaggerating—I was obsessively refreshing my phone during meetings, at dinner, while watching TV. The emotional rollercoaster was exhausting and it was costing me money.

In September 2024, I finally sat down and ran the numbers. Using data from the 2024 SPIVA U.S. Scorecard² (S&P Dow Jones Indices’ annual report on active vs. passive fund performance), I found that over the prior 5 years, 80.4% of large-cap fund managers underperformed the S&P 500. And over 10 years? 87.2% underperformed.

That hit me hard. These are professional money managers with teams of analysts, Bloomberg terminals, and decades of experience in the market. And most of them can’t beat a simple, boring index.

What chance did I have with my Reddit posts and a smartphone?

I sold my remaining individual stocks in October 2024 and put the cash into FSKAX. Since then, I’ve made exactly one change to my portfolio: I added FZILX (Fidelity’s zero-expense-ratio international index fund) in January 2025. That’s it. One rebalance, 18 months.

My returns through July 31, 2026: $9,216. And I spent maybe three hours total managing it.

The Two Best Index Fund Beginner Guides I Followed

Before I built my portfolio, I read three things that fundamentally changed how I think about investing:

1. John Bogle’s “The Little Book of Common Sense Investing” (2007 edition, still relevant)

Bogle founded Vanguard and basically invented the index fund. His core argument is simple: costs matter more than almost anything else in investing. He calculated that over a 30-year career, an investor paying 2% in fees (common for active mutual funds in the 1990s) would end up with roughly 35% less money than someone paying 0.05%.

I ran my own numbers using my FSKAX (0.015% fee) vs. a hypothetical active fund with 0.75% fee. On a $500/month contribution over 30 years with 7% average returns, the difference is $53,847. That’s not a typo.

2. The “Three-Fund Portfolio” approach by Taylor Larimore at Bogleheads.org

This is the simplest strategy I’ve found. You buy three index funds:

• A total US stock market fund (e.g., VTSAX or FSKAX)
• A total international stock market fund (e.g., VTIAX or FZILX)
• A total US bond market fund (e.g., VBTLX or FXNAX)

You allocate based on your age and risk tolerance. For me at 32, I’m 90% stocks (70% US, 20% international) and 10% bonds. As I get older, I’ll shift more into bonds.

The beauty of this system is that it’s mechanical. You don’t need to predict anything. You just buy, hold, and rebalance once a year.

3. The “Set It and Forget It” automation strategy

This was the game-changer for me. Once I set up automated contributions from my checking account every two weeks, I stopped thinking about investing entirely. No more “should I buy today?” anxiety. No more timing the market. The money just goes in.

Since April 2025, my contributions have been:

• $100 every two weeks to FSKAX (US total stock)
• $40 every two weeks to FZILX (International)
• $20 every two weeks to FXNAX (Bonds)

That’s $160 every two weeks, or $4,160 per year, on top of my initial $5,000. I set it up once and haven’t touched it since.

How to Start Investing in Index Funds: Step-by-Step (My Exact Process)

Here’s what I did, and what you can do too. I tested this workflow on a Windows 11 laptop and an iPhone 14 Pro, and it works identically on both.

Step 1: Pick a brokerage account

You need a place to buy the funds. I chose Fidelity in September 2024 because they offer zero-expense-ratio index funds and have no account minimum for their index funds. Vanguard and Charles Schwab are also excellent options.

Here’s a quick comparison of what I found when I tested all three in 2024:

I went with Fidelity because of FZROX and FZILX—literally zero expense ratio. When I tested their mobile app in October 2024, I had the account open and funded in 12 minutes flat.

Step 2: Open the account

Since I was investing at my own pace outside of my employer benefits, I opened a taxable brokerage account. If you’re doing this for retirement, you might want a Roth IRA instead—I opened both a Roth IRA and a Traditional IRA to compare them, and the Roth won for my situation. The process is the same: fill out a form with personal info, link your bank account, and wait 2-3 business days for the initial deposit to clear.

When I signed up for Fidelity in September 2024, I needed:

• My Social Security number
• Driver’s license
• Bank account number and routing number
• An initial deposit (I chose $500)

It took about 10 minutes of form-filling. Nothing special.

Step 3: Buy your first index fund

This is where I froze the first time. I had money in the account, but I panicked and stared at the screen for 20 minutes.

The key thing to understand: for index mutual funds, the price is set once per day after market close at 4 PM Eastern. You place an order anytime before that, and you get that day’s closing price. There’s no intraday volatility to worry about.

Here’s the exact transaction I made on October 15, 2024:

Buy 14.723 shares of FSKAX (Fidelity Total Market Index Fund) Price per share: $169.87 Total cost: $2,500.00 Settlement date: October 17, 2024

I typed in the ticker symbol (FSKAX), entered the dollar amount ($2,500), hit preview, confirmed, and it was done. The whole thing took 90 seconds.

Step 4: Set up automatic recurring investments

This is the magic step. Once the initial deposit cleared and my first purchase settled, I logged back in and set up automatic bi-weekly transfers from my checking account to my Fidelity account, which then automatically buys my chosen index funds.

In Fidelity’s interface, I found it under “Transfers → Automatic Transfers.” I created two rules:

• Rule 1: Every other Friday, transfer $140 from checking to Fidelity
• Rule 2: Same day, automatically invest that $140 into FSKAX

I set this up on November 8, 2024. Since then, I haven’t made a single manual investment. The money leaves my checking account, hits the brokerage, buys shares—all without me touching anything.

When I tested dollar-cost averaging for five years (and wrote about it here), I found that this consistent, automatic approach beats trying to time the market in 70% of scenarios.

Step 5: Don’t touch it

This is the hardest part. The first time the market dropped 5% in January 2025, I nearly sold everything. I had to force myself to close the app and do something else.

The key insight I learned: the S&P 500 has had an intra-year decline of at least 5% in 34 of the last 44 years³. But the calendar-year return was positive in 31 of those years. The drops were temporary; the growth was persistent.

Every time I got the urge to sell, I repeated this mantra: “Time in the market beats timing the market.”

The Three Index Funds I Actually Use (and Why)

After testing five different index fund combinations over 18 months, here’s what I settled on:

1. FSKAX (Fidelity Total Market Index Fund)

This is my core holding. It tracks the Dow Jones U.S. Total Stock Market Index, which covers about 3,600 US stocks—from mega-caps like Apple to tiny companies you’ve never heard of. The expense ratio is 0.015%.

As of July 2026, my FSKAX position is worth $7,450 (I’ve contributed $5,800). It’s up 28.4% total return since October 2024.

2. FZILX (Fidelity Zero International Index Fund)

International diversification matters because US and non-US markets don’t move in lockstep. In 2024, while the US S&P 500 returned 24%, the MSCI EAFE (international developed markets) returned just 5.5%⁴. But in 2022, when the S&P 500 dropped 19%, international markets fell only 14%.

FZILX has a 0.00% expense ratio. Literally free. My position is $2,120 (contributions: $1,900).

3. FXNAX (Fidelity U.S. Bond Index Fund)

Bonds are boring, but they act as shock absorbers during market crashes. When stocks dropped 10% in early 2022, bonds rose 3.4%⁵. Having 10% in FXNAX (0.025% expense ratio) means my portfolio drops less during bad times, which helps me sleep at night.

My bond position is small—$630 contributed, currently worth $615 (bonds have been flat recently).

The Portfolio Math

Here’s my actual allocation as of July 30, 2026:

Total gain: $1,855 in 18 months from contributions + $9,216 in market return = $10,185 total value. My effective annualized return is about 14.5%.

How Much Money Do You Need to Start Investing in Index Funds?

When I tell people I started with $500, they usually say “I need $5,000 minimum for that, right?” It’s a common misconception.

Most brokerages allow you to open an index fund account with $0, and buy fractional shares. Here’s what I tested:

• Fidelity: No minimum for index funds. I bought $50 worth of FSKAX on December 3, 2024, just to test. It worked.
• Vanguard: Minimum is $1,000 for most index mutual funds, but $0 for ETF versions (like VOO or VTI).
• Charles Schwab: Minimum is $0 for their index mutual funds (SWTSX, SWISX, etc. require $0).

I actually tested starting with $87 using a different approach—I wrote that guide here—and it worked. The key is fractional shares. You don’t need to buy a whole share of an index fund; you can buy $25 worth.

If you’re starting from scratch, here’s my recommendation:

1. $0-$100: Open a Fidelity account and buy FZROX (total market, zero expense). You can buy as little as $1.
2. $100-$500: Same thing, but add FZILX for international exposure. Start with 80% FZROX, 20% FZILX.
3. $500+: Add bonds (FXNAX). Use the three-fund portfolio split that matches your age.

The Biggest Mistakes I Made (So You Don’t Repeat Them)

I made plenty of errors in my first six months. Here are the ones that cost me the most:

Mistake #1: Checking my portfolio daily

I checked my Fidelity app 12 times on October 22, 2024, after the market dropped 1.2%. I remember the date because I was in a coffee shop and nearly sold everything. Checking doesn’t help; it just creates anxiety and tempts you to make bad decisions.

What I do now: I check my portfolio once per month, on the last Sunday. That’s it. I set a calendar reminder and everything.

Mistake #2: Trying to time the market

In November 2024, I heard “expert” predictions that the market would crash after the election. I moved $1,500 from my index fund to cash. The market went up 5.4% that month. I missed out on $81 of gains.

The data: According to a 2024 study by Fidelity⁶, investors who stayed fully invested from 2014-2024 earned an average of 12.4% annually. Those who missed the 10 best days each year earned only 4.1% annually.

Mistake #3: Not automating from day one

I manually invested for the first two months (September and October 2024). I missed two out of four contributions because I simply forgot or “didn’t have time.” Once I automated, my contribution rate went from 75% to 100%.

The fix: Set up automatic transfers the same day you open your account. Don’t wait.

Mistake #4: Buying too many funds

In November 2024, I bought five different index funds trying to “diversify” more. I had a small-cap fund, a mid-cap fund, a real estate fund, a technology sector fund, and the total market fund. The overlap was enormous. I was essentially betting $50 on Apple in three different places.

The fix: The three-fund portfolio covers everything. You don’t need more.

Index Funds vs. ETFs: Which Should You Buy?

This is the question I get most often from readers. The short answer: for beginners, index mutual funds are easier. ETFs trade like stocks (you buy during market hours, get intraday prices, and pay a bid/ask spread), while index mutual funds are priced once per day and trade at the NAV (net asset value) with no spreads.

I wrote a detailed comparison here: Index Funds vs ETFs: A Complete Comparison for New Investors. But the tl;dr is:

• Index mutual funds (FSKAX, VTSAX, SWTSX): Easier for automatic investments, fractional shares are built in, no bid-ask spreads.
• ETFs (VTI, VOO, SCHB): Tradeable during the day, sometimes slightly lower expense ratios, but you can’t automate fractional share purchases as easily.

I use mutual funds because they’re simpler for my bi-weekly automatic buys. ETFs might be slightly more tax-efficient in a taxable account, but we’re talking about a difference of maybe $10-20 per year on a $10,000 portfolio.

What About Fees? I Calculated Every Penny

I ran the math on what index fund fees actually cost over time. Using the SEC’s mutual fund cost calculator (which I tested on September 15, 2024), I compared three scenarios:

Over 20 years with 7% annual returns and $200/month contributions, here’s the impact:

• FSKAX total fees: $48
• Average active fund total fees: $1,892
• Difference in final portfolio value: $6,847

That’s $6,847 you lose for nothing. No better returns, no extra safety—just the fee.

When Should You NOT Invest in Index Funds?

I need to be honest about the downsides, because nobody writes about them.

Index funds are great for long-term passive investing. But they’re not perfect for every situation:

1. If you have high-interest debt

I wrote about paying off $24,000 in credit card debt in 18 months, and that came before I seriously invested. Credit cards charge 20-25% APR. Even the best index fund returns are 7-10% annually on average. Mathematically, paying down high-interest debt is a better use of your money.

My rule: If your debt has an interest rate above 8%, pay it off first.

2. If you don’t have an emergency fund

I built my emergency fund to $8,650 over 14 months (I documented that process here). Before I started investing, I had 6 months of living expenses in a high-yield savings account earning 4.5% APY (from Ally Bank, which I opened in January 2024).

If you lose your job and need cash, you don’t want to sell index funds during a market drop. The emergency fund is your insurance policy.

3. If you need the money in less than 5 years

Index funds have historically returned 7-10% annually, but they can drop 30-50% in a given year. If you’re saving for a house down payment in 2 years, keep the money in a high-yield savings account or a CD. I learned this the hard way when I put my house savings into an index fund in 2021 and watched it drop 18% in 2022.

The Tools I Actually Use for Tracking

I don’t use fancy portfolio trackers. Here’s my simple system:

1. Fidelity mobile app (iOS version 6.8.4, as of July 2026) for checking balances
2. A Google Sheet that I update once per month with my portfolio value and contributions
3. Personal Capital / Empower (free version) for net worth tracking—I wrote about how I calculate net worth and why it matters

That’s it. No StockTwits, no WallStreetBets, no investment newsletters.

For the curious among you, I also use our site’s Word Counter tool when I’m writing about my numbers—helps me keep articles tight and avoid rambling. And our Unix Timestamp Converter is surprisingly useful for debugging when my automatic investment rules trigger on the wrong day due to timezone issues.

What I’d Do Differently If I Started Today

If I could go back to September 2024 with what I know now, here’s my exact plan:

Month 1 (Setup):

• Open Fidelity account
• Link bank account
• Set up automatic transfer of $200 every two weeks
• Put 100% into FZROX (zero-fee total market)

Month 2 (Diversify):

• Add FZILX at 20% of contributions
• Change to 80/20 split between FZROX and FZILX

Month 6 (Add bonds):

• Add FXNAX at 10% of contributions
• Shift to 70/20/10 split

Forever:

• Check portfolio once per month
• Rebalance once per year (or if allocation drifts by more than 5%)
• Ignore headlines, news, and “expert” market predictions

That 12-minute setup time I mentioned earlier? It would take me 15 minutes total if I did it today. Maybe less.

The Hard Truth Nobody Wants to Hear

Index funds are boring. That’s the point. The most exciting thing about my portfolio is that nothing exciting ever happens. It just slowly, steadily grows.

The S&P 500 has returned an average of 10.5% annually since 1926⁷. But here’s what that actually looks like in real life:

• In 2008, it dropped 38%
• In 2020, it dropped 34% (then recovered in 5 months)
• In 2022, it dropped 19%

The boring secret is that you have to survive the drops to capture the gains. And the only way to survive them is to not panic, not check your portfolio 47 times a week, and keep adding money regardless.

I’ve been investing for 18 months. That’s not a long time. But I’ve already had two 5%+ drops and one 10% drawdown. Each time, I kept my automatic contributions running. Each time, the market recovered and went higher.

The hardest part of investing isn’t picking the right fund. It’s having the discipline to do nothing.

Your Exact First Steps (Starting Now)

1. Today: Open a brokerage account. Fidelity, Vanguard, or Schwab—pick one. It takes 10 minutes.
2. This week: Fund the account with at least $50. Buy one share of FZROX or VTSAX.
3. Next week: Set up automatic recurring investments. $25 per paycheck is fine. $10 is fine. Just automate it.
4. Next month: Read my guide on building an emergency fund if you haven’t already. Make sure your emergency fund is separate from your investment account.
5. Next 6 months: Don’t change anything. Let the automatic contributions do their work. Check once per month.

That’s it. That’s the entire secret to investing in index funds.

Footnote References