Observatory · observe first
Leidos
LDOS · United States · Diversified Support Services · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Historical observation
20182026
Universe weight
0.043%
12M weight contribution
+0.008 pp
3M weight contribution
-0.003 pp
12M price return
+11.8%
Share of matched S&P 500 members
Monthly observations through Jul 2025
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 |
|---|---|---|---|---|---|
| Jul 2025 | $20.6bn | 0.043% | +0.008 pp | +11.8% | Yes |
| Jun 2025 | $20.3bn | 0.044% | +0.007 pp | +9.3% | Yes |
| May 2025 | $19.1bn | 0.043% | +0.005 pp | +2.1% | Yes |
| Apr 2025 | $19.3bn | 0.046% | -0.009 pp | +6.1% | Yes |
| Mar 2025 | $17.7bn | 0.042% | -0.007 pp | +4.0% | No |
| Feb 2025 | $17.0bn | 0.038% | -0.012 pp | +2.7% | No |
| Jan 2025 | $19.0bn | 0.042% | -0.003 pp | +30.0% | No |
| Dec 2024 | $19.2bn | 0.044% | -0.001 pp | +34.5% | No |
| Nov 2024 | $22.1bn | 0.049% | +0.003 pp | +55.9% | Yes |
| Oct 2024 | $24.4bn | 0.057% | +0.011 pp | +86.9% | Yes |
| Sep 2024 | $22.0bn | 0.051% | +0.009 pp | +78.9% | Yes |
| Aug 2024 | $21.4bn | 0.052% | +0.009 pp | +64.7% | Yes |
| Jul 2024 | $19.5bn | 0.035% | +0.007 pp | +56.4% | No |
| Jun 2024 | $19.7bn | 0.037% | +0.009 pp | +67.0% | No |
| May 2024 | $19.9bn | 0.038% | +0.012 pp | +91.1% | No |
| Apr 2024 | $19.0bn | 0.055% | +0.012 pp | +52.6% | Yes |
| Mar 2024 | $17.8bn | 0.049% | +0.006 pp | +44.5% | Yes |
| Feb 2024 | $17.4bn | 0.050% | +0.003 pp | +33.8% | Yes |
| Jan 2024 | $15.2bn | 0.045% | -0.001 pp | +13.5% | Yes |
| Dec 2023 | $14.9bn | 0.044% | -0.007 pp | +4.5% | Yes |
| Nov 2023 | $14.8bn | 0.046% | -0.005 pp | -0.3% | Yes |
| Oct 2023 | $13.6bn | 0.046% | -0.003 pp | -0.9% | Yes |
| Sep 2023 | $12.7bn | 0.042% | -0.005 pp | +7.0% | Yes |
| Aug 2023 | $13.4bn | 0.043% | -0.004 pp | +4.2% | 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.