STON Congressional Trades
9 trades by 1 members of Congress (Feb 2016 – Aug 2016)
Last updated March 21, 2026
Congress members who trade STON
Recent STON trades
| Date | Politician | Action | Amount | Alpha |
|---|---|---|---|---|
| 2016-08-15 | Virginia Foxx | BUY | $1K-$15K | — |
| 2016-05-16 | Virginia Foxx | BUY | $1K-$15K | — |
| 2016-03-23 | Virginia Foxx | BUY | $1K-$15K | — |
| 2016-03-22 | Virginia Foxx | BUY | $1K-$15K | — |
| 2016-02-29 | Virginia Foxx | BUY | $1K-$15K | — |
| 2016-02-09 | Virginia Foxx | BUY | $1K-$15K | — |
| 2016-02-08 | Virginia Foxx | BUY | $1K-$15K | — |
| 2016-02-05 | Virginia Foxx | BUY | $1K-$15K | — |
| 2016-02-03 | Virginia Foxx | BUY | $1K-$15K | — |
Frequently Asked Questions
Which Congress members trade STON?
1 members of Congress have traded STON. Top traders include: Virginia Foxx. See the full list below.
Is Congress buying or selling STON?
Congress has made 9 purchases of STON with no recent sales.
Do Congress STON trades beat the market?
Congressional trades in STON have a 0% win rate against the S&P 500, with an average alpha of +0.0%.
How is alpha calculated?
Alpha measures how much a trade outperformed the S&P 500 over the same holding period. For each politician, we show their dollar-weighted alpha—larger positions count more. A politician with +404% alpha on NVDA means their NVDA trades, weighted by size, beat the market by 404 percentage points.
What does the win rate mean?
Win rate is the percentage of trades that beat the S&P 500. Note that win rate treats all trades equally—a $5K trade counts the same as a $5M trade. This is why some traders show high alpha but moderate win rates (big wins, small losses) or low alpha but high win rates (consistent small wins).