These Were the S&P 500's Best-Performing Stocks at the Halfway Mark of 2026. Can They Still Go Higher This Year?

The banal marketplace has continued to execute good successful 2026, contempt seemingly precocious valuations for galore stocks entering this year. As of the extremity of June, the S&P 500, which features the apical 500 stocks connected U.S. markets, was up 9% since the opening of the year. And since 2023, it has present risen by 95%.

This year, tech stocks person erstwhile again dominated, with a dense absorption connected representation and retention providers. The 3 best-performing stocks connected the S&P 500 arsenic of the halfway people of 2026 were Sandisk (NASDAQ: SNDK), Micron Technology (NASDAQ: MU), and Intel (NASDAQ: INTC). Here's a look astatine however overmuch they were up arsenic of the halfway mark, and if they tin inactive emergence overmuch higher successful the 2nd half.

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Sandisk

Shares of Sandisk were up a monstrous 858% arsenic of the extremity of June, easy making it the hottest banal to ain connected the S&P 500. There's nary enigma down its occurrence arsenic Sandisk has been benefiting from unthinkable request for the representation and retention products that it sells. Its valuation whitethorn besides marque it look enticing to tech investors, arsenic it has a marketplace headdress of astir $260 billion, which whitethorn not look each that large compared to the large players successful tech.

But portion the concern has been doing well, determination has been immoderate apprehension of late. The banal fell past week, possibly owed to concerns astir its precocious valuation (it trades astatine astir 60 times trailing earnings) and fears that, portion determination is simply a shortage of representation and retention products successful the marketplace close now, that shortage whitethorn inevitably extremity successful the agelong run. And erstwhile that happens, Sandisk's banal could beryllium owed for a correction.

The institution has been doing exceedingly well, but the question is whether this benignant of show is sustainable. In its astir caller quarter, which ended connected April 3, the company's gross roseate by 251%, and its gross nett borderline was 78%, which was a immense betterment from conscionable 23% successful the aforesaid play a twelvemonth ago.

Sandisk's banal whitethorn inactive emergence if request for representation remains strong, but I besides judge that it whitethorn tally retired of country to emergence a full batch higher, fixed however overmuch aboriginal maturation is already priced successful to its hefty valuation; it whitethorn beryllium approaching a peak, if it hasn't already deed one.

Micron Technology

Another red-hot representation banal this twelvemonth has been Micron Technology, whose valuation crossed the trillion-dollar people amid its rally during the archetypal six months. At the halfway mark, the banal was up conscionable implicit 300%. While that's acold down Sandisk, it's a tremendous show nonetheless.