$300 Per Month in the Vanguard IT ETF for 20 Years — What Would You Have?

The Quick Take

• A $300/month systematic investment in the Vanguard Information Technology ETF (VGT) could grow substantially over 20 years, based on historical sector returns.
• VGT has delivered approximately 20% annualised returns over the past decade, driven by mega-cap tech concentration in Apple, Microsoft, and NVIDIA.
• The analysis highlights the power of dollar-cost averaging in a high-growth sector ETF versus lump-sum investing at market peaks.

The Vanguard Information Technology ETF (VGT) has been one of the highest-performing broad sector ETFs over the past decade, delivering approximately 20% annualised total returns driven by the extraordinary appreciation of mega-cap holdings Apple, Microsoft, and NVIDIA. A consistent $300 monthly investment beginning a decade ago would have compounded to a substantial multiple of the principal invested — demonstrating both the power of dollar-cost averaging and the exceptional returns available in technology sector exposure. The key mechanics: monthly investment smooths entry prices across market cycles, meaning investors captured bargain prices during 2020 pandemic selloffs and 2022 rate-hike corrections that boosted long-term compounding significantly.

The forward projection requires acknowledging that past 20% annualised returns are unlikely to persist over the next 20 years. Technology sector valuations — with VGT trading at high P/E multiples — embed significant future earnings growth expectations that may or may not materialise. A more conservative base case uses the broader US market's long-term 10-12% annualised return, which still projects $300/month over 20 years to approximately $270,000-$350,000 in terminal portfolio value from $72,000 of principal invested. The bull case at 15% annualised implies $490,000+ — a 7x multiple of principal that demonstrates technology sector return potential.

The macro variable for VGT's forward return profile is AI monetisation timing: if the AI capex supercycle converts into revenue growth for the top holdings (Microsoft Azure AI, Google Cloud AI, NVIDIA data centre) within 3-5 years, the earnings base justifies current valuations. If monetisation delays cause earnings to disappoint, P/E multiple compression would drag long-term returns below historical averages. The forward signal: check VGT's effective forward P/E quarterly — above 35x is a signal that valuations are pricing in perfection, warranting position sizing discipline.

Synthesized from 2 sources.