performing stocks in s and p 500 past 6 months by month

Moderna (MRNA) had the best month between April 30, 2026 and October 31, 2026 by a US stock in the S&P 500 (GSPC) in August 2026, returning 155.5%.

ASSETMONTH% RETURN
Everest (EG)
April 2026
6.26%
Ares Management (ARES)
April 2026
6.7%
KKR (KKR)
April 2026
7.09%
Ciena (CIEN)
April 2026
8.12%
Skyworks Solutions (SWKS)
April 2026
11.35%
Flex (FLEX)
May 2026
64.95%
Super Micro Computer (SMCI)
May 2026
66.75%
Datadog (DDOG)
May 2026
78.59%
Micron Technology (MU)
May 2026
89.73%
Dell Technologies (DELL)
May 2026
101.85%
Corning (GLW)
June 2026
45.04%
Moderna (MRNA)
June 2026
48.78%
Marvell Technology (MRVL)
June 2026
49.76%
KLA (KLAC)
June 2026
58.92%
Applied Materials (AMAT)
June 2026
62.64%
Phillips 66 (PSX)
July 2026
24.73%
Willis Towers Watson (WTW)
July 2026
27.27%
PayPal (PYPL)
July 2026
30.44%
Accenture (ACN)
July 2026
33.05%
Cognizant Technology Solutions Corp Class A (CTSH)
July 2026
39.42%
Veeva Systems Inc Class A (VEEV)
August 2026
36.05%
Salesforce (CRM)
August 2026
36.27%
Skydance (SKYD)
August 2026
36.37%
Palantir Technologies (PLTR)
August 2026
47.1%
Moderna (MRNA)
August 2026
155.51%