Unlike mutual funds or ETFs, personalized indexing permits harvesting losses at the security level, offering more opportunities for ultra-high-net-worth investors to capture additional tax advantages. Tax-loss harvesting involves selling an investment at a loss and reinvesting the proceeds into another asset, a key benefit of direct indexing. 

Direct indexing strategies involve selling stocks below their cost basis and instantly repurchasing correlated replacements to avoid wash-sale rule violations. Since investors own individual stocks in their portfolios, losses can be captured even when the index gains value. DI experts exemplifies this strategy by selling underperforming securities during market gains, using harvested losses to offset capital gains and taxable income up to $3,000 annually, with the option to carry over losses to future years. 

Maximizing tax alpha depends on the frequency of portfolio scans for harvesting opportunities, with daily scanning potentially improving after-tax returns by 1% to 2% or more. Commitment to direct indexing underscores its importance in tax-efficient investing. 

Finsum: The frequency through which a portfolio can be scanned for tax-loss harvesting is making the case extremely compelling for direct indexing.