Universe›Information Technology›Technology Hardware, Storage & Peripherals›Technology Hardware, Storage & Peripherals›Western Digital
Observatory · observe first
Western Digital
WDC · United States · Technology Hardware, Storage & Peripherals · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Latest available · not live
20182026
Universe weight
0.275%
12M weight contribution
+0.192 pp
3M weight contribution
-0.107 pp
12M price return
+279.2%
Share of matched S&P 500 members
Monthly observations through Sep 2026
Company price index
A separate dimension from market allocation
Historical observations
Most recent 24 observations at or before the selected month
| Month | Market cap | Universe weight | 12M weight change | 12M return | Above 6M weight average |
|---|---|---|---|---|---|
| Sep 2026 | $163.9bn | 0.275% | +0.192 pp | +279.2% | No |
| Aug 2026 | $162.4bn | 0.271% | +0.213 pp | +462.3% | No |
| Jul 2026 | $187.8bn | 0.328% | +0.270 pp | +594.3% | Yes |
| Jun 2026 | $220.2bn | 0.383% | +0.334 pp | +900.9% | Yes |
| May 2026 | $183.1bn | 0.317% | +0.277 pp | +934.9% | Yes |
| Apr 2026 | $147.3bn | 0.200% | +0.163 pp | +895.0% | Yes |
| Mar 2026 | $91.7bn | 0.134% | +0.100 pp | +571.9% | Yes |
| Feb 2026 | $94.8bn | 0.130% | +0.092 pp | +473.8% | Yes |
| Jan 2026 | $84.8bn | 0.162% | +0.124 pp | +410.2% | Yes |
| Dec 2025 | $58.9bn | 0.115% | +0.080 pp | +283.7% | Yes |
| Nov 2025 | $55.8bn | 0.110% | +0.068 pp | +196.9% | Yes |
| Oct 2025 | $51.4bn | 0.101% | +0.060 pp | +205.2% | Yes |
| Sep 2025 | $41.7bn | 0.083% | +0.042 pp | +133.3% | Yes |
| Aug 2025 | $27.9bn | 0.058% | +0.017 pp | +62.4% | Yes |
| Jul 2025 | $27.5bn | 0.058% | +0.028 pp | +55.6% | Yes |
| Jun 2025 | $22.3bn | 0.048% | +0.013 pp | +11.9% | Yes |
| May 2025 | $18.0bn | 0.041% | +0.005 pp | -9.4% | Yes |
| Apr 2025 | $15.3bn | 0.037% | -0.014 pp | -18.1% | No |
| Mar 2025 | $14.1bn | 0.033% | -0.013 pp | -21.6% | No |
| Feb 2025 | $17.0bn | 0.038% | -0.004 pp | +8.9% | No |
| Jan 2025 | $17.1bn | 0.038% | -0.004 pp | +13.8% | No |
| Dec 2024 | $15.6bn | 0.035% | -0.003 pp | +13.9% | No |
| Nov 2024 | $19.1bn | 0.042% | +0.005 pp | +51.1% | Yes |
| Oct 2024 | $17.1bn | 0.040% | +0.007 pp | +62.7% | Yes |
Its weight is estimated market cap divided by the total estimated market cap of matched S&P 500 members for the month. This is not an official float-adjusted S&P index weight.