RGEN
Repligen
Health Care›Biotechnology›Biotechnology
28 stocks · 12 ETFs
data as of Aug 24, 2026
REPLACEMENT RESEARCH
Tax-loss harvesting alternatives for RGEN
Among the 28 Biotechnology peers screened, FTRE (Fortrea) has tracked RGEN most closely over the past year, with a return correlation of 0.47. The strongest fund stand-in is ARKG (ARK Genomic Revolution ETF) at 0.55 over the past year. Correlations are computed from daily closing-price returns aligned by trading day.
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Single-name peers
| Ticker | Name | Sub-industry | 1Y | 3Y | 5Y | 10Y |
|---|---|---|---|---|---|---|
| FTRE | Fortrea | Biotechnology | 0.47 | 0.36 | 0.34 | — |
| VCEL | Vericel | Biotechnology | 0.36 | 0.31 | 0.37 | 0.31 |
| INCY | Incyte | Biotechnology | 0.29 | 0.22 | 0.25 | 0.29 |
| AMGN | Amgen Inc. | Biotechnology | 0.25 | 0.23 | 0.19 | 0.27 |
| BMRN | BioMarin Pharmaceutical | Biotechnology | 0.25 | 0.28 | 0.31 | 0.33 |
| LGND | Ligand Pharmaceuticals, Inc. | Biotechnology | 0.24 | 0.28 | 0.30 | 0.32 |
| ADMA | ADMA Biologics, Inc. | Biotechnology | 0.24 | 0.24 | 0.26 | 0.19 |
| KRYS | Krystal Biotech | Biotechnology | 0.23 | 0.23 | 0.21 | 0.23 |
| MRNA | Moderna Inc. | Biotechnology | 0.23 | 0.22 | 0.27 | 0.23 |
| SRPT | Sarepta Therapeutics | Biotechnology | 0.20 | 0.18 | 0.20 | 0.21 |
| VRTX | Vertex Pharmaceuticals | Biotechnology | 0.20 | 0.21 | 0.22 | 0.30 |
| HALO | Halozyme | Biotechnology | 0.20 | 0.23 | 0.27 | 0.32 |
| EXEL | Exelixis | Biotechnology | 0.20 | 0.16 | 0.21 | 0.26 |
| ROIV | Roivant Sciences | Biotechnology | 0.19 | 0.25 | 0.23 | — |
| REGN | Regeneron Pharmaceuticals | Biotechnology | 0.18 | 0.25 | 0.27 | 0.30 |
| NBIX | Neurocrine Biosciences | Biotechnology | 0.18 | 0.23 | 0.24 | 0.29 |
| BIIB | Biogen Inc. | Biotechnology | 0.18 | 0.26 | 0.25 | 0.23 |
| ARWR | Arrowhead Pharmaceuticals | Biotechnology | 0.17 | 0.32 | 0.36 | 0.30 |
| XNCR | Xencor Inc | Biotechnology | 0.17 | 0.27 | 0.29 | 0.32 |
| ALNY | Alnylam Pharmaceuticals | Biotechnology | 0.17 | 0.16 | 0.21 | 0.26 |
| GILD | Gilead Sciences | Biotechnology | 0.16 | 0.15 | 0.16 | 0.22 |
| CYTK | Cytokinetics | Biotechnology | 0.15 | 0.18 | 0.23 | 0.24 |
| VIR | Vir Biotechnology, Inc. | Biotechnology | 0.15 | 0.26 | 0.29 | 0.19 |
| TGTX | TG Therapeutics, Inc. | Biotechnology | 0.15 | 0.19 | 0.27 | 0.27 |
| RCUS | Arcus Biosciences, Inc. | Biotechnology | 0.14 | 0.23 | 0.27 | 0.27 |
| HRMY | Harmony Biosciences Holdings, Inc. | Biotechnology | 0.11 | 0.20 | 0.24 | — |
| PTGX | Protagonist Therapeutics, Inc. | Biotechnology | 0.07 | 0.06 | 0.12 | 0.12 |
| UTHR | United Therapeutics | Biotechnology | 0.04 | 0.11 | 0.12 | 0.20 |
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 |
|---|---|---|---|---|---|---|---|
| ARKG | ARK Genomic Revolution ETF | Genomics (Active) | INDUSTRY | 0.55 | 0.53 | 0.56 | 0.56 |
| FHLC | Fidelity MSCI Health Care ETF | Health Care Sector | SECTOR | 0.45 | 0.46 | 0.51 | 0.51 |
| IBB | iShares Biotechnology ETF | Biotechnology | INDUSTRY | 0.45 | 0.51 | 0.57 | 0.56 |
| VHT | Vanguard Health Care ETF | Health Care Sector | SECTOR | 0.45 | 0.46 | 0.51 | 0.51 |
| IYH | iShares US Healthcare ETF | Health Care Sector | SECTOR | 0.43 | 0.44 | 0.49 | 0.49 |
| XLV | Health Care Select Sector SPDR | Health Care Sector | SECTOR | 0.41 | 0.42 | 0.46 | 0.46 |
| IHI | iShares Medical Devices ETF | Medical Devices | SUB-IND | 0.38 | 0.42 | 0.51 | 0.51 |
| XBI | SPDR S&P Biotech ETF | Biotechnology (Equal Wt) | INDUSTRY | 0.36 | 0.44 | 0.49 | 0.52 |
| XPH | SPDR S&P Pharmaceuticals | Pharmaceuticals (Equal Wt) | INDUSTRY | 0.35 | 0.43 | 0.48 | 0.48 |
| PPH | VanEck Pharma ETF | Pharmaceuticals | INDUSTRY | 0.33 | 0.31 | 0.35 | 0.40 |
| IHE | iShares US Pharmaceuticals ETF | Pharmaceuticals | INDUSTRY | 0.32 | 0.34 | 0.38 | 0.44 |
| IHF | iShares Health Care Providers | Health Care Providers | INDUSTRY | 0.17 | 0.23 | 0.30 | 0.34 |
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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.