A simple two-ETF portfolio with a daily 50/50 rebalance between QQQ (Nasdaq-100 tech tilt) and SPY (broad S&P 500). Keeps equal exposure to both, automatically selling the bigger and buying the smaller to maintain balance.

In plain terms: you own two big stock ETFs instead of a single one. One is QQQ (Nasdaq-100, tech-heavy) and the other is SPY (the S&P 500, broad large-cap market). Every trading day, the portfolio checks how much money sits in each ETF. If one has more value than the other, the system sells some of that larger one and buys more of the smaller one so both hold roughly the same dollar amount. If you start with equal dollars in both, you end with roughly a 50/50 split after each day’s moves. This keeps you exposed to both the tech-heavy Nasdaq-100 and the broad U.S. market, but with a constant effort to avoid overweighting one side. Think of it as a simple, automatic balancing act that tries to stay evenly split between the two funds. Note: frequent trading can eat into returns and incur costs or taxes, and the approach gives more weight to a contrarian rebalancing mindset than to letting winners run. The two ETFs are well-known: - QQQ: Invesco QQQ Trust Series 1, tracks Nasdaq-100 (mostly tech leaders). - SPY: SPDR S&P 500 ETF Trust, tracks the S&P 500 (broad U.S. large-cap exposure).

Out-of-sample, the 50/50 QQQ-SPY rebalance shows stronger risk-adjusted upside than SPY: ~26.9% annualized return, Sharpe ~1.22, Calmar ~1.70. Simple, automatic balancing with a modest drawdown (~15.8% vs 14.7%).