← All All indexes additions
FIX — S&P 500 index addition
Comfort Systems USA
Sector
Unknown
Announced
Dec 22, 2025
Effective
Dec 22, 2025
Replaced
Mohawk Industries
1W after inclusion
-0.0%
-0.2% vs index
1M after inclusion
+20.7%
+19.4% vs index
3M after inclusion
+42.8%
+45.0% vs index
6M after inclusion
+107.1%
+96.5% vs index
1Y after inclusion
—
window not elapsed
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: +6.3%
Other stocks added to the S&P 500
- RDDT — Reddit joined on Aug 18, 2026.
- 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.
See the full S&P 500 additions log or the index review calendar.