Tax-loss harvesting alternatives for REGN

Among the 28 Biotechnology peers screened, AMGN (Amgen Inc.) has tracked REGN most closely over the past year, with a return correlation of 0.48. The strongest fund stand-in is IBB (iShares Biotechnology ETF) at 0.55 over the past year. Correlations are computed from daily closing-price returns aligned by trading day.

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STOCKS

Single-name peers

Ticker	Name	Sub-industry	1Y	3Y	5Y	10Y
AMGN	Amgen Inc.	Biotechnology	0.48	0.41	0.39	0.44
VRTX	Vertex Pharmaceuticals	Biotechnology	0.37	0.35	0.38	0.46
BIIB	Biogen Inc.	Biotechnology	0.34	0.42	0.36	0.35
BMRN	BioMarin Pharmaceutical	Biotechnology	0.33	0.34	0.33	0.37
GILD	Gilead Sciences	Biotechnology	0.32	0.33	0.35	0.41
INCY	Incyte	Biotechnology	0.31	0.35	0.36	0.41
EXEL	Exelixis	Biotechnology	0.31	0.24	0.23	0.33
HALO	Halozyme	Biotechnology	0.28	0.22	0.23	0.30
PTGX	Protagonist Therapeutics, Inc.	Biotechnology	0.25	0.25	0.17	0.13
SRPT	Sarepta Therapeutics	Biotechnology	0.25	0.24	0.22	0.24
ROIV	Roivant Sciences	Biotechnology	0.24	0.28	0.18	—
XNCR	Xencor Inc	Biotechnology	0.23	0.27	0.26	0.30
TGTX	TG Therapeutics, Inc.	Biotechnology	0.23	0.17	0.16	0.20
RCUS	Arcus Biosciences, Inc.	Biotechnology	0.23	0.29	0.24	0.25
NBIX	Neurocrine Biosciences	Biotechnology	0.22	0.25	0.27	0.31
KRYS	Krystal Biotech	Biotechnology	0.22	0.26	0.20	0.19
LGND	Ligand Pharmaceuticals, Inc.	Biotechnology	0.21	0.21	0.23	0.31
VIR	Vir Biotechnology, Inc.	Biotechnology	0.21	0.24	0.23	0.17
VCEL	Vericel	Biotechnology	0.21	0.21	0.20	0.18
MRNA	Moderna Inc.	Biotechnology	0.20	0.21	0.24	0.23
ADMA	ADMA Biologics, Inc.	Biotechnology	0.19	0.21	0.21	0.15
UTHR	United Therapeutics	Biotechnology	0.19	0.24	0.26	0.32
RGEN	Repligen	Biotechnology	0.18	0.25	0.27	0.30
FTRE	Fortrea	Biotechnology	0.16	0.20	0.19	—
CYTK	Cytokinetics	Biotechnology	0.12	0.18	0.19	0.22
ALNY	Alnylam Pharmaceuticals	Biotechnology	0.11	0.20	0.23	0.31
HRMY	Harmony Biosciences Holdings, Inc.	Biotechnology	0.11	0.15	0.19	—
ARWR	Arrowhead Pharmaceuticals	Biotechnology	0.11	0.24	0.26	0.22

ETFS

Fund stand-ins

An ETF is generally not 'substantially identical' to a single stock, which is why funds are the standard wash-sale-aware replacement.

Ticker	Name	Focus	Match	1Y	3Y	5Y	10Y
IBB	iShares Biotechnology ETF	Biotechnology	INDUSTRY	0.55	0.59	0.57	0.62
VHT	Vanguard Health Care ETF	Health Care Sector	SECTOR	0.50	0.52	0.52	0.53
FHLC	Fidelity MSCI Health Care ETF	Health Care Sector	SECTOR	0.50	0.52	0.52	0.53
IYH	iShares US Healthcare ETF	Health Care Sector	SECTOR	0.49	0.51	0.51	0.53
XLV	Health Care Select Sector SPDR	Health Care Sector	SECTOR	0.48	0.51	0.51	0.52
PPH	VanEck Pharma ETF	Pharmaceuticals	INDUSTRY	0.46	0.48	0.46	0.49
IHE	iShares US Pharmaceuticals ETF	Pharmaceuticals	INDUSTRY	0.46	0.48	0.46	0.51
XBI	SPDR S&P Biotech ETF	Biotechnology (Equal Wt)	INDUSTRY	0.42	0.46	0.41	0.48
XPH	SPDR S&P Pharmaceuticals	Pharmaceuticals (Equal Wt)	INDUSTRY	0.37	0.43	0.41	0.46
IHI	iShares Medical Devices ETF	Medical Devices	SUB-IND	0.29	0.31	0.35	0.39
ARKG	ARK Genomic Revolution ETF	Genomics (Active)	INDUSTRY	0.23	0.30	0.30	0.36
IHF	iShares Health Care Providers	Health Care Providers	INDUSTRY	0.18	0.22	0.28	0.33

NEXT STEPS

Harvesting a loss in REGN?

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Replacement research for REGN's peers

AMGN VRTX BIIB BMRN GILD INCY EXEL HALO PTGX SRPT ROIV XNCR TGTX RCUS NBIX KRYS LGND VIR VCEL MRNA ADMA UTHR RGEN FTRE CYTK ALNY HRMY ARWR

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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.