How to Invest in Private Stocks: What You Need to Know

If you work in tech, you might already own private stock and not even think of it that way. Your RSUs at a pre-IPO startup? That's private company stock. But what about investing in other private companies — the ones you don't work for?

Private market investing used to be reserved for venture capitalists and hedge funds. That's changing fast. With new platforms and relaxed regulations, more individual investors can now access pre-IPO shares. But "can" doesn't always mean "should." Here's what you need to know before putting your money into private stocks.

What Are Private Stocks?

Private stocks are shares in companies that aren't listed on a public exchange like the NYSE or Nasdaq. These companies range from early-stage startups to massive late-stage firms like SpaceX or Stripe that simply haven't gone public yet.

When you hear "pre-IPO investing," that's the same idea — buying shares in a company before it lists on a public exchange. Most of these transactions happen on the secondary market, where existing shareholders (often employees or early investors) sell their stakes to new buyers.

If you hold equity at a private company through your job, you already have direct exposure to this asset class. The question is whether it makes sense to add more private company stock to your portfolio.

Why Investors Are Drawn to Private Markets

The pitch is compelling. Many of today's most valuable companies stay private much longer than they used to. In the 1990s, companies like Amazon went public at roughly a $400 million valuation. Today, companies routinely reach $10 billion, $50 billion, or even $100 billion valuations before listing.

That means much of the growth happens while a company is still private. By the time retail investors can buy shares on the public market, a significant chunk of the upside has already been captured by early shareholders.

Private stocks also offer portfolio diversification. They don't move in lockstep with public markets, which can help smooth out volatility in your overall portfolio. For tech workers who already have heavy public-market exposure through 401(k)s and index funds, that diversification can be particularly appealing.

Who Can Actually Invest?

Here's where it gets real. Most private stock investments require you to be an accredited investor. You qualify if you meet at least one of these criteria:

• Income: $200,000 annually (or $300,000 with a spouse) for the past two years

• Net worth: Over $1 million, excluding your primary residence

• Credentials: You hold a Series 7, 65, or 82 license

Many tech professionals in mid-to-senior roles already meet the income threshold, especially when factoring in equity compensation.

If you don't qualify as accredited, you're not completely shut out. Some investment vehicles like certain venture capital funds and private equity ETFs are open to all investors, though they offer indirect exposure rather than direct ownership in specific companies.

How to Buy Private Stocks

There are several paths into private market investing, each with different trade-offs:

Secondary marketplaces are the most common route. Platforms like Forge and EquityZen connect accredited investors with shareholders looking to sell. You can browse available companies, review pricing data, and make offers — similar to buying stocks on a brokerage, but with longer settlement times and higher minimums.

Special purpose vehicles (SPVs) let multiple investors pool capital to buy shares in a single company. This lowers the individual investment minimum and gives smaller investors access to deals they couldn't swing alone.

Venture funds and ETFs offer the broadest exposure. Funds like the ARK Venture Fund give you a diversified basket of private companies without the need to pick individual winners. The trade-off is less control over which companies you're invested in.

Direct investments are rare for individual investors but possible if you have connections to a company's founders or participate in a funding round. This typically requires significant capital and strong relationships.

The Risks You Need to Understand

Private stock investing carries real risks that are fundamentally different from buying public equities. Be honest with yourself about whether you can handle them.

Illiquidity is the big one. When you buy shares of Apple, you can sell them in seconds. Private shares? You might wait years. There's no guarantee of a buyback, acquisition, or IPO. Your money could be locked up for five to seven years — or longer.

Information is limited. Public companies file quarterly earnings reports and annual disclosures with the SEC. Private companies don't have to share much of anything. You're making investment decisions with significantly less data, which makes due diligence harder and more important.

Valuations are uncertain. That $10 billion valuation you see in a headline? It's based on the last funding round, not on open-market price discovery. The actual value of your shares could be higher or lower, and you won't know until a liquidity event happens.

There's no guarantee of an exit. Companies fail, pivot, or stay private indefinitely. Your shares could become worthless, or they could sit in limbo for a decade with no way to cash out.

How Private Stocks Fit With Your RSUs

If you're a tech worker with RSUs or stock options at a private company, you already have meaningful private stock exposure. This matters when thinking about whether to invest in more private companies.

A common mistake is doubling down on private market risk without realizing it. If 40% of your net worth is tied up in your employer's private stock, adding more private company investments increases your concentration in an illiquid, high-risk asset class.

Before investing in additional private stocks, take a hard look at your total portfolio. How much of your wealth is already in private company equity? Could you afford to lose that money entirely? If your employer's stock is a significant portion of your portfolio, diversifying into public markets or other asset classes might actually be the smarter move.

Smart Strategies for Private Stock Investing

If you've evaluated the risks and decided that private market investing makes sense for your situation, here are some principles to follow:

Keep it small. Most financial advisors suggest limiting alternative investments — including private stocks — to 5-10% of your total portfolio. This gives you exposure to potential upside while protecting you if things go sideways.

Diversify within private markets. Don't put all your private market allocation into a single company. Spread it across multiple investments or use a fund to get broader exposure. The failure rate of individual private companies is high, so diversification matters even more here than in public markets.

Do your homework. Research the company's revenue trajectory, competitive position, and path to liquidity. Talk to current and former employees. Read everything you can find. The less transparent the investment, the more diligence you need to do.

Plan for the long haul. Only invest money you genuinely won't need for five-plus years. Private investments are not a place for your emergency fund or money earmarked for near-term goals.

Understand the tax implications. Private stock transactions can trigger complex tax situations, especially if you're also managing RSU vesting and stock option exercises. The interplay between different types of equity compensation and private investments is something worth discussing with a tax professional.

The Bottom Line

Investing in private stocks can be a powerful addition to a well-built portfolio — but it's not for everyone, and it's definitely not something to jump into without preparation. The potential for outsized returns comes with genuine risks: illiquidity, limited information, and the very real possibility of losing your investment.

For tech workers who already hold private company stock through their employer, the calculus is even more nuanced. You need to think about your total exposure to private markets, not just the new investment in isolation.

The smartest approach is to treat private stock investing as one piece of a broader financial strategy — not a get-rich-quick play. Understand what you own, know your risk tolerance, and make sure every investment decision fits into your bigger picture.

Astor helps tech professionals manage their equity compensation and build smarter portfolios. Whether you're navigating RSU vesting schedules or evaluating your overall investment mix, our AI-powered advisor can help you make more informed decisions. Get started with Astor today.

This article is for educational purposes only and does not constitute financial advice.