According to CoinMeta, the tech industry has become one of the most profitable sectors for long-term investors in recent years, with innovations in internet, e-commerce, cloud computing, and artificial intelligence driving growth in this field. The performance of the S&P 500 is closely correlated with tech stocks, with the "Big Seven" companies accounting for more than one-third of the total market value of the S&P 500. For investors looking to gain greater exposure to tech, Roundhill Memory ETF, iShares, Sem, early-stage issues of nductor, ETF, and Vanguard Information Technology Index Fund are good choices. Roundhill Memory ETF, which focuses on memory chip manufacturers, has risen by more than 100% since its listing in April. iShares, Sem, early-stage issues of nductor, and ETF have achieved an annualized return of 29.6% over the past five years. Vanguard Information Technology Index Fund is the most diversified tech ETF, with an annualized return of 24.3% over the past decade.