1. 买入意味着持有什么？
XLV提供医疗保健行业的投资敞口。基金份额不等于直接分别持有成分企业股票。这个投资范围不是整个股市；企业资格和实际权重以基金当前规则及持仓为准。
Current price—
Daily change—
From 52-week high—
XLV是什么？先全面认识，再开始研究
一站式了解投资范围、集中度、收益来源、风险及相近ETF。无需登录，免费阅读。
2. 公司多，不等于风险完全分散
不要只看公司数量，还需看头部权重、地域与业务敞口。名称相近不代表组合相同。可对比IBB / XBI / SPY的实际持仓与筛选规则；叠加重叠基金可能增加集中风险。
3. 收益从哪里来？
盈利、估值变化及分配影响收益，费用减少收益。价格收益不含分配再投资。总收益比较应统一日期与货币，并核对最新发行商费率、价差及交易费用。
4. 理解可能的下行风险
业务周期、利率、监管和预期变化都可能造成亏损。下跌20%需要上涨25%回本，下跌50%需要上涨100%。行业及主题基金即使持有多家公司也可能集中；分红不等于保本。
5. 开始研究的清单
先明确组合定位、重叠和可承受亏损，再结合盈利与估值研究。价格下跌不证明便宜。TTM代表已报告的历史盈利，Forward依赖预测；历史百分位不是未来涨跌概率。
6. 常见问题
会亏钱吗？会。每股价格低就是估值便宜吗？不是。与相近ETF相同吗？应检查实际持仓。52周回撤不同于历史最高点回撤；VIX是标普500期权预期指标，不是本ETF自身隐含波动率。
免费教育信息，不构成个性化投资建议。请注意数据日期及估算标注。
Research panel
XLV Current Price
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Daily Change
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From 52-Week High
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TTM PE
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10-Year Percentile —
10-Year Range —
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TTM EPS Growth
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Official current observation. Historical valuation percentile will appear after sufficient comparable observations are collected.
Forward PE
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Forward EPS Growth
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Valuation Percentile Scale
Tap or hover over a color band to view its investing discipline.
Loading data
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10-Year Low PE
10-Year High PE
Waiting for latest valuation
Past 10 Years
The current-band discipline will appear when the data loads.
Top 10 weighted holdings
Companies with the greatest current influence on XLV.
| # | Ticker | Market cap | TTM PE | Forward PE | EPS growth | Weight | From 52W high |
|---|---|---|---|---|---|---|---|
| 1 | LLY | — | — | Premium | — | 15.24% | — |
| 2 | JNJ | $609.5B | 29.3× | Premium | -7.7% | 10.33% | -10.0% |
| 3 | ABBV | $469.6B | 75.1× | Premium | 68.3% | 7.61% | -1.3% |
| 4 | MRK | $344.3B | 111.5× | Premium | -80.7% | 5.88% | -11.1% |
| 5 | UNH | $339.8B | 24.3× | Premium | -32.6% | 5.43% | -18.0% |
| 6 | TMO | $250.2B | 36.4× | Premium | 7.6% | 4.00% | -1.0% |
| 7 | AMGN | $217.9B | 25.0× | Premium | 31.7% | 3.65% | -9.9% |
| 8 | GILD | $179.3B | — | Premium | -152.8% | 3.03% | -8.0% |
| 9 | ABT | $173.2B | 32.4× | Premium | -61.3% | 2.77% | -25.9% |
| 10 | PFE | $156.2B | 36.3× | Premium | -59.8% | 2.66% | -6.2% |
Holdings weights use the latest available published snapshot. Missing values are not estimated.
Investment Discipline
- Buying SharesBuy in stages only below the 25th percentile; do not add shares merely because valuation is fair.
- 25%–75% Fair ValueHold. Cash-secured puts at lower strikes may be used while waiting for a better entry.
- 75%–95% ExpensiveKeep high-quality holdings; after sharp gains, high-strike covered calls may add cash flow.
- Above 95% Bubble ZoneThis is the only zone where gradually trimming shares to realize gains may be considered.