best performing stocks in the sandp 500 may 21

Sandisk (SNDK) had the highest return on May 21 by a US stock in the S&P 500 (GSPC), returning 12%.

ASSETDATE% RETURN
Sandisk (SNDK)
5/21/2026
11.96%
Lumentum (LITE)
5/21/2026
10.89%
International Business Machines (IBM)
5/21/2026
8.77%
Seagate Technology (STX)
5/21/2026
7.56%
Bloom Energy (BE)
5/21/2026
7.29%
Arista Networks (ANET)
5/21/2026
6.67%
Western Digital (WDC)
5/21/2026
6%
Corning (GLW)
5/21/2026
5.43%
Ciena (CIEN)
5/21/2026
5.43%
Norwegian Cruise Line (NCLH)
5/21/2026
5.37%
Williams-Sonoma (WSM)
5/21/2026
5.32%
Royal Caribbean Cruises (RCL)
5/21/2026
5.31%
Qualcomm (QCOM)
5/21/2026
5.24%
First Solar (FSLR)
5/21/2026
4.92%
Palo Alto Networks (PANW)
5/21/2026
4.8%
Coherent (COHR)
5/21/2026
4.71%
United Airlines (UAL)
5/21/2026
4.41%
Target (TGT)
5/21/2026
4.4%
Southwest Airlines (LUV)
5/21/2026
4.36%
Deckers Outdoor (DECK)
5/21/2026
4.34%
NetApp (NTAP)
5/21/2026
4.25%
Copart (CPRT)
5/21/2026
4.21%
HP (HPQ)
5/21/2026
4.14%
MGM Resorts International (MGM)
5/21/2026
4.09%
Sysco (SYY)
5/21/2026
4.05%