What is the difference between VOO ETF and SPY ETF?

The main differences between VOO ETF and SPY ETF are as follows: 1. **Expense Ratio**: VOO has a lower expense ratio of 0.05% compared to SPY's 0.09%. This means VOO is more cost-effective for investors. 2. **Assets Under Management**: SPY has a significantly higher Assets Under Management (AUM) of $682.56 billion compared to VOO's AUM, which could indicate higher investor demand and potentially better liquidity for SPY. 3. **Holdings**: Both ETFs have similar holdings, with the top five holdings in both VOO and SPY being the same companies, but the holding weights differ. For example, Constellation Energy is held at 0.17% in SPY and 0.06% in VOO, indicating a difference in the weight given to this stock by the two ETFs. In conclusion, while both ETFs track the same benchmark (S&P 500 Index), VOO offers a lower expense ratio and potentially different investment strategy due to varying holding weights. Investors should consider these factors when choosing between the two ETFs. |market_code|code|Ticker|Name|Expense Ratio|Management Style|Date|Percentage Change|Assets Under Management| |---|---|---|---|---|---|---|---|---| |169|VOO|VOO.P|Vanguard S&P 500 ETF|0.03|Passive|20250303|-1.722402|6.11228361466E11| |169|SPY|SPY.P|State Street SPDR S&P 500 ETF Trust|0.0945|Passive|20250303|-1.751994|6.1392425683234E11| |169|VOO|VOO.P|Vanguard S&P 500 ETF|0.03|Passive|20250304|-1.205021|6.04176188904E11| |169|SPY|SPY.P|State Street SPDR S&P 500 ETF Trust|0.0945|Passive|20250304|-1.183685|6.108557083843E11| |169|VOO|VOO.P|Vanguard S&P 500 ETF|0.03|Passive|20250305|1.121689|6.11170015904E11| |169|SPY|SPY.P|State Street SPDR S&P 500 ETF Trust|0.0945|Passive|20250305|1.074784|6.1979797458571E11| |169|VOO|VOO.P|Vanguard S&P 500 ETF|0.03|Passive|20250306|-1.813945|6.01234432919E11| |169|SPY|SPY.P|State Street SPDR S&P 500 ETF Trust|0.0945|Passive|20250306|-1.775117|6.0862172083267E11| |169|VOO|VOO.P|Vanguard S&P 500 ETF|0.03|Passive|20250307|0.539237|6.05465127554E11| |169|SPY|SPY.P|State Street SPDR S&P 500 ETF Trust|0.0945|Passive|20250307|0.560493|6.1102635565269E11|