The **S&P 500 **as a whole has had a solid 2026 so far, rising nearly 10%. If it continues this trend throughout the rest of 2026, the index would return a decent amount ahead of the 10% annual returns investors normally pencil in for the S&P 500. However, individual components within the S&P 500 have had far different experiences in 2026.
The best stock in the S&P 500, **Sandisk **(SNDK 14.13%), is up around 800%. The worst stock, Intuit, is down around 60%. That's quite a delta in performance, but how will these stocks fare in the second half?
Let's take a look at why Sandisk rose to the top and which stock could be the best-performing stock in the second half of 2026.
我们来探究一下Sandisk为何能登顶，以及哪只股票可能成为2026年下半年表现最佳的股票。
Image source: Getty Images.
图片来源：Getty Images。
Sandisk is thriving from a memory chip shortage
Sandisk因存储芯片短缺而蓬勃发展
Unless you've been living under a rock, you've likely noticed that one of the biggest overarching themes in the stock market is the artificial intelligence (AI) data center build-out. This is creating a ton of activity in the chip space, as well as in the construction industry. However, it's stretching some industries thin.
The biggest shortage right now in the data center space isn't energy capacity, land, or labor; it's memory chips. The memory chip industry just isn't built for this kind of demand wave, and when demand is high and supply is low, prices skyrocket. Sandisk has benefited from these economic mechanisms, and it's the reason why the stock is soaring.
Many in the industry predict that this memory chip shortage won't be alleviated in 2026 or in 2027, so there is still a lot of room for Sandisk to run. So, just because Sandisk had a strong start to 2026, it doesn't mean that it won't finish among the top companies. However, I think there is another candidate that could be an excellent investment, and it may surprise you.
Although Intuit is the worst performer in the S&P 500 so far, I highly doubt it will rise to become the best performer in the second half. Instead, I'm betting on Nvidia (NVDA 1.39%). This may sound odd, as Nvidia is the world's largest company by market cap. But I think it could have an incredible second half of 2026, and investors need to buckle their seatbelts for the returns it's about to deliver.
The investment thesis behind Nvidia's stock is simple: The AI buildout is going to boom through the rest of 2026, into 2027, and beyond. As a result, it's not uncommon to see future growth get priced in, but there is none of that in Nvidia's stock beyond the end of 2026. This primes the stock for huge gains in the second half of 2026, especially as investors realize there will be more spending in 2027.
Nvidia's stock is up only 5% so far in 2026, but I think it could post gains of nearly 100% by the end of 2026 if historical trends persist. Right now, Nvidia trades for 21.5 times forward earnings -- the same as the S&P 500.
However, in each of the past two years, Nvidia has ended the year trading at 40 times forward earnings or greater. If Nvidia can rise to that level again, we could see the stock double in value. Even if it doesn't, Nvidia is priced at 15 times next year's earnings, which is a very low price to pay for a stock growing as quickly as Nvidia is.
Even if Nvidia isn't the best-performing stock in the second half of 2026, I still think it will rank among the top performers and be a great one to hold onto from now through the end of 2026. If you've got some spare investment dollars sitting around, Nvidia may be a great place to deploy them to.
闪迪是2026年上半年表现最佳的标普500股票。以下是我认为将在下半年占据主导地位的股票（提示：不是SpaceX）。
The **S&P 500 **as a whole has had a solid 2026 so far, rising nearly 10%. If it continues this trend throughout the rest of 2026, the index would return a decent amount ahead of the 10% annual returns investors normally pencil in for the S&P 500. However, individual components within the S&P 500 have had far different experiences in 2026.
标普500指数整体在2026年开局表现稳健，上涨近10%。如果这一趋势贯穿2026年剩余时间，该指数将带来可观的回报，超过投资者通常对标普500预期的10%年化收益率。然而，标普500中的个股在2026年的表现却大相径庭。
The best stock in the S&P 500, **Sandisk **(SNDK 14.13%), is up around 800%. The worst stock, Intuit, is down around 60%. That's quite a delta in performance, but how will these stocks fare in the second half?
标普500中表现最好的股票是Sandisk（SNDK 14.13%），涨幅约800%。表现最差的股票是Intuit，跌幅约60%。这业绩差距相当大，但下半年这些股票会如何表现呢？
Let's take a look at why Sandisk rose to the top and which stock could be the best-performing stock in the second half of 2026.
我们来探究一下Sandisk为何能登顶，以及哪只股票可能成为2026年下半年表现最佳的股票。
Image source: Getty Images.
图片来源：Getty Images。
Sandisk is thriving from a memory chip shortage
Sandisk因存储芯片短缺而蓬勃发展
Unless you've been living under a rock, you've likely noticed that one of the biggest overarching themes in the stock market is the artificial intelligence (AI) data center build-out. This is creating a ton of activity in the chip space, as well as in the construction industry. However, it's stretching some industries thin.
除非你与世隔绝，否则你可能已经注意到，股市最大的宏观主题之一是人工智能（AI）数据中心的建设。这在芯片领域以及建筑行业引发了大量活动。然而，这也让一些行业捉襟见肘。
The biggest shortage right now in the data center space isn't energy capacity, land, or labor; it's memory chips. The memory chip industry just isn't built for this kind of demand wave, and when demand is high and supply is low, prices skyrocket. Sandisk has benefited from these economic mechanisms, and it's the reason why the stock is soaring.
目前数据中心领域最大的短缺不是能源容量、土地或劳动力，而是存储芯片。存储芯片行业根本承受不了这种需求浪潮，当需求高、供应低时，价格就会飙升。Sandisk从这些经济机制中受益，这也是其股价飙升的原因。
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NASDAQ: SNDK
纳斯达克：SNDK
Sandisk
Sandisk
Today's Change
今日变动
(-14.13%) $-287.22
(-14.13%) $-287.22
Current Price
当前价格
$1745.00
$1745.00
Key Data Points
$301B 关键数据点
Market Cap
市值
Day's Range
日涨跌幅区间
$1693.00 - $2052.54
$1693.00 - $2052.54
52wk Range
52周范围
$40.10 - $2354.39
$40.10 - $2354.39
Volume
成交量
17.3M
17.3M
Avg Vol
平均成交量
13.7M
13.7M
Gross Margin
毛利率
56.04%
56.04%
Many in the industry predict that this memory chip shortage won't be alleviated in 2026 or in 2027, so there is still a lot of room for Sandisk to run. So, just because Sandisk had a strong start to 2026, it doesn't mean that it won't finish among the top companies. However, I think there is another candidate that could be an excellent investment, and it may surprise you.
业内许多人预测，这种存储芯片短缺在2026年或2027年不会缓解，因此Sandisk仍有很大的上涨空间。所以，仅仅因为Sandisk在2026年开局强劲，并不意味着它不会在年底跻身顶级公司之列。然而，我认为还有另一个候选者可能是一项极佳的投资，而且可能会让你感到惊讶。
Nvidia could arise from its slumber
英伟达可能从沉睡中苏醒
Although Intuit is the worst performer in the S&P 500 so far, I highly doubt it will rise to become the best performer in the second half. Instead, I'm betting on Nvidia (NVDA 1.39%). This may sound odd, as Nvidia is the world's largest company by market cap. But I think it could have an incredible second half of 2026, and investors need to buckle their seatbelts for the returns it's about to deliver.
尽管Intuit是迄今为止标普500中表现最差的股票，但我高度怀疑它会在下半年崛起成为表现最佳的股票。相反，我押注于英伟达（NVDA 1.39%）。这听起来可能有些奇怪，因为英伟达是全球市值最大的公司。但我认为它可能在2026年下半年有惊人的表现，投资者需要系好安全带，迎接它即将带来的回报。
The investment thesis behind Nvidia's stock is simple: The AI buildout is going to boom through the rest of 2026, into 2027, and beyond. As a result, it's not uncommon to see future growth get priced in, but there is none of that in Nvidia's stock beyond the end of 2026. This primes the stock for huge gains in the second half of 2026, especially as investors realize there will be more spending in 2027.
英伟达股票的投资逻辑很简单：AI建设热潮将在2026年剩余时间、2027年及以后持续爆发。因此，未来增长被提前定价的情况并不少见，但英伟达的股价中并未体现2026年底之后的增长。这为股票在2026年下半年的大幅上涨做好了准备，尤其是当投资者意识到2027年将有更多支出时。
Nvidia's stock is up only 5% so far in 2026, but I think it could post gains of nearly 100% by the end of 2026 if historical trends persist. Right now, Nvidia trades for 21.5 times forward earnings -- the same as the S&P 500.
英伟达股价在2026年迄今仅上涨5%，但我认为如果历史趋势持续，到2026年底它可能实现近100%的涨幅。目前，英伟达的远期市盈率为21.5倍——与标普500相同。
NVDA PE Ratio (Forward 1y) data by YCharts
NVDA市盈率（远期1年）数据来自YCharts
However, in each of the past two years, Nvidia has ended the year trading at 40 times forward earnings or greater. If Nvidia can rise to that level again, we could see the stock double in value. Even if it doesn't, Nvidia is priced at 15 times next year's earnings, which is a very low price to pay for a stock growing as quickly as Nvidia is.
然而，在过去两年中，英伟达每年年底的远期市盈率都达到40倍或更高。如果英伟达能再次升至这一水平，我们可能会看到该股价值翻倍。即使不能，英伟达目前的股价也仅为明年盈利的15倍，对于像英伟达这样快速增长的股票来说，这是一个非常低的价格。
Even if Nvidia isn't the best-performing stock in the second half of 2026, I still think it will rank among the top performers and be a great one to hold onto from now through the end of 2026. If you've got some spare investment dollars sitting around, Nvidia may be a great place to deploy them to.
即使英伟达不是2026年下半年表现最佳的股票，我仍然认为它将成为表现最佳的股票之一，并且从现在到2026年底都是一个值得持有的好标的。如果你手头有一些闲置的投资资金，英伟达可能是一个很好的配置方向。