news.ycombinator.com• Dec 10, 2024• 1 min read
Launch HN: Double (YC W24) – Index Investing with 0% Expense RatiosHi HN, we’re JJ and Mark, the founders of Double (https://double.finance). Double lets you invest in 50+ broad stock market indexes with 0% expense ratios. We handle all the management, including rebalancing and tax-loss harvesting—proactively selling losing stocks to potentially save on taxes—for $1/month.Our goal is to bring the low fee trend pioneered by Robinhood to ETFs and mutual funds. We posted a Show HN about 3 months ago (https://news.ycombinator.com/item?id=41246686) and since then have crossed $10M in AUM (Assets Under Management) [1].Here’s a demo video: https://www.loom.com/share/10c9150ce4114f278e8c249f211e7ec8. Please note that none of this content should be treated as financial advice.Everyone knows that fees eat into your investing returns. Financial advisors generally charge 1% of AUM per year, and ETFs have a weighted average expense ratio of about 0.17%, although some go as low as 0.03% for VOO. Over a 30-year period on a $500k portfolio with $2k invested monthly,