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RDDT — S&P 500 index addition
Sector
Unknown
Announced
Aug 18, 2026
Effective
Aug 18, 2026
Replaced
AvalonBay Communities
1W after inclusion
+2.7%
+2.5% vs S&P 500
1M after inclusion
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window not elapsed
3M after inclusion
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window not elapsed
6M after inclusion
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window not elapsed
1Y after inclusion
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Indexed performance around the effective date (effective close = 100)
Prices last updated: 2026-09-16 06:30 UTC (9h ago)
Run-up in the 30 days into inclusion: -12.7%
Other stocks added to the S&P 500
- FERG — Ferguson Enterprises joined on Aug 5, 2026.
- HONA — Honeywell Aerospace joined on Jun 29, 2026.
- FLEX — Flex Ltd. joined on Jun 22, 2026.
- MRVL — Marvell Technology joined on Jun 22, 2026.
- FDXF — FedEx Freight joined on Jun 1, 2026.
- VEEV — Veeva Systems joined on May 7, 2026.
See the full S&P 500 additions log or the index review calendar.