If you walked into a stock broker's office in 1995 and asked to buy $50 worth of Apple, they would have laughed at you. A single share of Apple back then cost around $40, and brokers charged $30 commission per trade. You couldn't even afford the fee.

In 2026, you can buy $1 of Apple — or Tesla, or Amazon, or Berkshire Hathaway (where a single whole share costs over $600,000) — from your phone in under a minute, with no commission. The thing that changed is fractional shares. This article explains exactly how they work, what the catches are, and why they're the single biggest development for African retail investors in a generation.

The simple version

A fractional share is exactly what it sounds like: a portion of one whole share of a stock. If a share of Microsoft costs $400 and you have $40 to invest, your brokerage buys you 0.1 shares. You own one-tenth of one share. If the price rises 10%, your $40 becomes $44. If Microsoft pays a $3 dividend per share, you get 30 cents. Everything scales proportionally.

That sounds obvious, but for most of stock market history it was technically impossible. Shares were physical certificates. You couldn't tear a certificate into ten pieces. Even after the market went electronic, the infrastructure was built around whole shares. Buying a fraction required the brokerage itself to absorb the rest, hold it on its own balance sheet, and reconcile constantly. Most brokers refused to do it because the operational cost outweighed the revenue.

That changed in the late 2010s when commission-free brokerages like Robinhood made fractional shares a headline feature. The rest of the industry followed. Today nearly every major brokerage offers fractional trading on at least some stocks.

Why this matters for African investors

Mauritian, Kenyan, Nigerian, and South African retail investors face a specific problem: the most attractive companies in the world — the ones driving global wealth creation — are listed in the United States, and many of them trade at prices that put a single share out of reach for someone earning a middle-class African salary.

A few examples (May 2026 approximate prices):

• 1 share of Apple: ~$210 (Rs 9,500)
• 1 share of Microsoft: ~$420 (Rs 19,000)
• 1 share of NVIDIA: ~$1,300 (Rs 58,500)
• 1 share of Tesla: ~$280 (Rs 12,600)
• 1 share of Berkshire Hathaway A: ~$610,000 (Rs 27.5m)

For someone earning Rs 30,000 a month, buying a single share of NVIDIA means committing two months of income to one company with zero diversification. That's not investing — that's gambling.

With fractional shares, the same investor can put Rs 1,000 across four positions: a slice of Apple, a slice of NVIDIA, a slice of an S&P 500 ETF, and a slice of a healthcare ETF. Now they own a diversified portfolio with reasonable exposure to multiple sectors, all for what they'd spend on a moderately nice dinner.

The catches nobody mentions

Fractional shares are genuinely great, but they're not magic. There are some real limitations to understand:

1. They're held in "street name" by the brokerage

When you buy a fractional share, you don't legally own the share certificate the way you would a full share. The brokerage owns the share and tracks your fractional position internally. This is fine as long as the brokerage stays solvent and reputable, but it does mean fractional positions can't typically be transferred to another broker. If you switch platforms, you usually have to sell the fraction first and re-buy it elsewhere.

2. Voting rights vary

Some brokerages pass through voting rights proportional to your fractional ownership. Others don't bother because of the operational complexity. If voting on shareholder proposals matters to you, check the policy before opening the account.

3. Not every stock supports fractional trading

Most major US stocks do. Many smaller stocks, ADRs of foreign companies, and some ETFs do not. The brokerage usually publishes a list. For most beginner portfolios this isn't a constraint, but it's worth knowing.

4. The spread can be wider on small fills

On a $1 order, the bid-ask spread might represent 1–2% of the order. That's a real cost, even when the headline commission is zero. Always check the all-in cost, not just the "$0 commission" sticker.

5. Dividends are paid proportionally — and sometimes rounded

If you own 0.1 shares of a stock that pays a $1 dividend, you should receive 10 cents. Most brokerages round to the nearest cent and pass it on. Over a portfolio of many small positions, this rounding can amount to small leakage. Not enough to matter for most investors.

How to use fractional shares well

Build diversification on a small budget

The original use case. Instead of saving up for months to afford one share of a single company, invest a small amount monthly across 10 to 20 positions. Diversification is the single most reliable risk-management technique in investing. Fractional shares mean you can have it from day one.

Dollar-cost average into index funds

A share of an S&P 500 ETF (like VOO or SPY) costs $400–$500. If you want to invest $300 a month, you can't buy a whole share. Fractional shares let you invest exactly your monthly amount, every month, without leaving cash on the sidelines waiting to hit the next whole-share threshold.

Test ideas with tiny positions

Thinking about a new sector? Curious about a single company? Open a $5 fractional position. You get a real stake in the outcome (which is what makes you pay attention) without putting meaningful capital at risk. Treat it like tuition.

Gift investing to family

Want to teach a niece or younger sibling about investing? A $20 fractional share of a company they use (Apple, Disney, Netflix) is a more memorable gift than another piece of stuff. They learn by watching it move.

The bigger picture

For most of the past century, ownership of US public companies was concentrated among people who happened to live near US capital markets. The geography of wealth tracked the geography of access. Fractional shares — combined with commission-free trading and mobile-first brokerages — are quietly dismantling that.

A 22-year-old in Curepipe with Rs 2,000 a month to invest now has the same access to the global capital markets as a 22-year-old in Manhattan. Not the same connections, not the same information edge — those still favour insiders. But the same instruments. The same companies. The same returns over time.

That's a real shift, and it's the kind of thing that doesn't feel revolutionary while it's happening but looks obvious in retrospect.

Try fractional investing risk-free. Download Zunko and practise building a diversified fractional-share portfolio with our $10,000 paper trading account before you put real money in.