seedy19tron
Biotech trader, L/S
Seedy19 (@seedy19tron) is a pseudonymous X account that writes long/short analysis of biotech stocks; it has not disclosed a name, employer or professional credentials. Its posts dissect clinical-trial design and readouts, litigation, 13F filings and the timelines of past biotech takeovers, with long-running coverage of small- and mid-cap drug developers such as Abivax and Nektar Therapeutics and of the XBI biotech ETF. On 28 July 2025 it started a recurring "biotech outperformance train" series comparing biotech returns with broad US indices, and in September 2026 it launched a Substack newsletter on biotech investing with a weekly issue.
Leaderboard rank
Open in leaderboard →| Horizon | 7D | 30D | 90D | 180D | 360D | AVG |
|---|---|---|---|---|---|---|
| Rank | #37 | #350 | #101 | #358 | — | #178 |
| Calls | 69 | 62 | 50 | 23 | 0/10 | 64 |
| Avg return | +2.9% | +1.8% | +10.2% | +4.2% | — | +5.3% |
| vs S&P 500 | +2.9 pp | +1.1 pp | +7.2 pp | -2.7 pp | — | +2.3 pp |
Ticker
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Calls
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First Call
Best call P&L
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seedy19tron has 62 trade ideas tracked on Buzzberg across 56 tickers since January 2026. Win rate 45% across 58 evaluated calls, average return -8.2%. Ranked #350 on Buzzberg's 30-day Authors leaderboard. Most covered: ABVX, NKTR, VERA.
Historical call returns are modeled from recorded ideas and stored prices, not actual brokerage portfolio returns. Check the evaluated call set and horizon; past results do not establish future prediction accuracy. Explore our data and methodology
