Tax-loss harvesting alternatives for WKC

Among the 8 Oil & Gas Refining & Marketing peers screened, MPC (Marathon Petroleum) has tracked WKC most closely over the past year, with a return correlation of 0.29. The strongest fund stand-in is IEZ (iShares US Oil Equipment & Services) at 0.31 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
MPC	Marathon Petroleum	Oil & Gas Refining & Marketing	0.29	0.36	0.45	0.51
PSX	Phillips 66	Oil & Gas Refining & Marketing	0.28	0.39	0.47	0.54
DINO	HF Sinclair	Oil & Gas Refining & Marketing	0.27	0.38	0.46	0.52
VLO	Valero Energy	Oil & Gas Refining & Marketing	0.26	0.34	0.44	0.52
CVI	CVR Energy, Inc.	Oil & Gas Refining & Marketing	0.23	0.30	0.38	0.48
PBF	PBF Energy	Oil & Gas Refining & Marketing	0.21	0.30	0.41	0.47
REX	REX American Resources Corporation	Oil & Gas Refining & Marketing	0.19	0.22	0.32	0.41
PARR	Par Pacific Holdings, Inc.	Oil & Gas Refining & Marketing	0.16	0.28	0.37	0.45

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
IEZ	iShares US Oil Equipment & Services	Oil Services	SUB-IND	0.31	0.41	0.49	0.57
OIH	VanEck Oil Services ETF	Oil Services	SUB-IND	0.30	0.40	0.50	0.57
CRAK	VanEck Oil Refiners ETF	Oil Refiners	SUB-IND	0.21	0.36	0.48	0.53
VDE	Vanguard Energy ETF	Energy Sector	SECTOR	0.19	0.37	0.49	0.58
XLE	Energy Select Sector SPDR	Energy Sector	SECTOR	0.19	0.37	0.48	0.58
FENY	Fidelity MSCI Energy ETF	Energy Sector	SECTOR	0.19	0.37	0.49	0.58
IYE	iShares US Energy ETF	Energy Sector	SECTOR	0.18	0.36	0.49	0.58
IEO	iShares US Oil & Gas E&P ETF	Oil & Gas E&P	SUB-IND	0.17	0.35	0.47	0.56
XOP	SPDR S&P Oil & Gas E&P ETF	Oil & Gas E&P	SUB-IND	0.16	0.35	0.49	0.55
AMLP	Alerian MLP ETF	Energy Infrastructure	INDUSTRY	0.13	0.33	0.43	0.47
VOO	Vanguard S&P 500 ETF	S&P 500	BROAD	0.09	0.33	0.36	0.44
SPY	SPDR S&P 500 ETF	S&P 500	BROAD	0.09	0.33	0.37	0.44

NEXT STEPS

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Replacement research for WKC's peers

MPC PSX DINO VLO CVI PBF REX PARR

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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.