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Observatory · observe first
Interactive Brokers
IBKR · United States · Investment Banking & Brokerage · matched S&P 500 member. Follow its market-weight contribution.
Historical time machine
Historical observation
20182026
Universe weight
0.005%
12M weight contribution
+0.005 pp
3M weight contribution
+0.005 pp
12M price return
+94.2%
Share of matched S&P 500 members
Monthly observations through Aug 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 |
|---|---|---|---|---|---|
| Aug 2025 | $2.6bn | 0.005% | +0.005 pp | +94.2% | 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.