← All Nasdaq-100 additions
WDC — Nasdaq-100 index addition
Western Digital
Sector
Unknown
Announced
Dec 22, 2025
Effective
Dec 22, 2025
Replaced
Trade Desk (The)
1W after inclusion
+1.7%
+1.8% vs Nasdaq-100
1M after inclusion
+36.9%
+35.7% vs Nasdaq-100
3M after inclusion
+65.9%
+69.4% vs Nasdaq-100
6M after inclusion
+322.5%
+303.1% vs Nasdaq-100
1Y after inclusion
—
window not elapsed
Indexed performance around the effective date (effective close = 100)
Prices last updated: 2026-09-16 06:30 UTC (10h ago)
Run-up in the 30 days into inclusion: +27.1%
Other stocks added to the Nasdaq-100
- RBLX — Roblox joined on Sep 4, 2026.
- SPCX — SpaceX joined on Jul 1, 2026.
- HONA — Honeywell Aerospace joined on Jun 29, 2026.
- RKLB — Rocket Lab joined on Jun 22, 2026.
- TER — Teradyne joined on Jun 22, 2026.
- NBIS — Nebius Group joined on Jun 22, 2026.
See the full Nasdaq-100 additions log or the index review calendar.