Share Dilution

Share dilution occurs when a company increases its total share count, reducing each existing shareholder's proportional ownership and claim on earnings. If you own 100 shares of a company with 1,000 shares outstanding (10% ownership) and the company issues 200 new shares, your ownership drops to 100/1,200 = 8.3% even though you still hold 100 shares. Dilution reduces earnings per share (EPS), book value per share, and voting power per share.

Common sources of dilution include: secondary stock offerings (issuing new shares to raise capital), employee stock options and restricted stock units (RSUs) when exercised or vested, convertible bonds and preferred shares when converted to common stock, warrants when exercised, stock-based acquisitions (using new shares as acquisition currency), and at-the-market (ATM) offerings. Technology companies are particularly prone to dilution through stock-based compensation — some companies dilute shareholders by 3-5% annually through SBC.

Investors track net dilution by examining the year-over-year change in diluted share count. Companies that buy back shares may offset dilution — if a company issues 3% in SBC but repurchases 5% of shares, there's a net 2% accretion (beneficial to shareholders). The most shareholder-friendly companies achieve "shrinkflation" — growing earnings per share faster than total earnings by consistently reducing share count. Conversely, serial diluters destroy per-share value even as the overall business grows. To evaluate true dilution impact, look at diluted EPS rather than basic EPS, and check the stock-based compensation expense as a percentage of revenue. Companies with SBC exceeding 10-15% of revenue may be generating the appearance of profitability by paying employees in stock rather than cash.