@SeriouslySirius
@SeriouslySirius is a sports specialist who usually holds positions until they resolve. They have won 67% of their last 500 resolved positions, made $3.6M on Polymarket and finished 4 of the last 5 months in profit.
- Nostra score
- 71
- Top 10% of 1,750
- All-time P/L
- +$3.6M
- Realised
- 30-day P/L
- $0
- Last 30 days
- Win rate
- 67%
- Of 500 resolved
- 30-day volume
- $0
- Traded
- Months in profit
- 4 of 5
- Last 12 months
Profit by month
Realised profit per calendar month, Nov 2025 to Oct 2026. Best month Dec, +$2.9M.
Where profit comes from
Recent resolved positions
The last 6 markets that settled, with the side they took and what they made.
Similar traders
Same main topic, close in score.
Questions
Is @SeriouslySirius a good Polymarket trader?
By the Nostra score, yes: 71 out of 100, which puts them in the top 10% of the 1,750 traders we score. Past results don’t guarantee future ones.
What does @SeriouslySirius trade?
Mostly sports markets, which make up 100% of their profit. They tend to hold until the market resolves.
How do I see @SeriouslySirius’s trades as they happen?
Follow them in the Nostra app and you’ll get an alert when they open or close a position. Nostra doesn’t place trades for you.
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Keep exploring
More from Nostra: rankings by topic, trader profiles, smart groups and plain-English guides.
Leaderboards by topic
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Top traders
Profiles for the 500 best-scored Polymarket traders, with stats and recent calls.
Smart groups
20 self-updating groups, from The Nostra 30 to Weather Wizards.
Smart money
Markets where 3 or more top-scored traders back the same side, checked every 6 hours.
How the score works
What goes into a Nostra score, how often it updates and where it falls short.
Guides
Plain-English guides to finding and following traders on Polymarket.
Nostra for iPhone
Follow @SeriouslySirius in Nostra
Get an alert when @SeriouslySirius opens or closes a position, and see every move next to their score.
Free to download · iPhone