Tax-loss harvesting alternatives for IWF

The closest fund alternative to IWF (Large Growth) is VOO (Vanguard S&P 500 ETF), with a return correlation of 0.94 over the past year. Correlations are computed from daily closing-price returns aligned by trading day.

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ETFS

Fund stand-ins

Funds covering similar ground. Two funds tracking the same index may themselves be 'substantially identical' for wash-sale purposes.

Ticker	Name	Focus	Match	1Y	3Y	5Y	10Y
VOO	Vanguard S&P 500 ETF	S&P 500	BROAD	0.94	0.96	0.96	0.96
QQQM	Invesco Nasdaq 100 ETF	Nasdaq 100	BROAD	0.94	0.97	0.98	—
QQQ	Invesco QQQ Trust	Nasdaq 100	BROAD	0.94	0.97	0.98	0.98
SPY	SPDR S&P 500 ETF	S&P 500	BROAD	0.93	0.95	0.96	0.96
IVV	iShares Core S&P 500	S&P 500	BROAD	0.93	0.95	0.96	0.96
VTI	Vanguard Total Stock Market	Total US Market	BROAD	0.93	0.94	0.96	0.95
IWM	iShares Russell 2000	Small-Cap	BROAD	0.70	0.70	0.78	0.79
DIA	SPDR Dow Jones Industrial Average	Dow 30	BROAD	0.68	0.76	0.81	0.84
MDY	SPDR S&P MidCap 400	Mid-Cap	BROAD	0.66	0.72	0.79	0.81
RSP	Invesco S&P 500 Equal Weight	S&P 500 Equal Weight	BROAD	0.56	0.70	0.80	0.82
IWD	iShares Russell 1000 Value	Large Value	BROAD	0.55	0.66	0.75	0.79

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Harvesting a loss in IWF?

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Method: Pearson correlation of daily closing-price returns, Yahoo Finance data, series aligned by trading day, refreshed weekly. A cell is blank when overlapping history covers less than 60% of its window. Correlation is descriptive, not predictive. Wash-sale treatment depends on facts and circumstances — confirm with a tax professional. Not investment advice.