finnstockinger
Individual Investor & Market Commentator
Finn Stockinger is the name under which an individual investor writes about AI infrastructure, semiconductors and other technology companies on X (@FinnStockinger) and in the Substack newsletter The Stockinger. The X account was opened in December 2025 and the newsletter began publishing in June 2026. The newsletter says the author has an engineering background and works as a product manager, and describes a quality-growth approach with value discipline: looking for asymmetric opportunities by auditing supply chains and bottlenecks, reading financial reports and earnings-call transcripts, and following catalysts and structural growth trends. It says the published theses reflect the author's own portfolio decisions. The long-form posts cover AI data-center and cloud infrastructure companies, optical and photonic interconnects, robotics, and space and defense technology.
Leaderboard rank
Open in leaderboard →| Horizon | 7D | 30D | 90D | 180D | 360D | AVG |
|---|---|---|---|---|---|---|
| Rank | #100 | #763 | #41 | #314 | — | #267 |
| Calls | 61 | 61 | 26 | 26 | 0/10 | 61 |
| Avg return | +2.4% | -1.8% | +19.2% | +7.1% | — | +7.8% |
| vs S&P 500 | +2.0 pp | -1.5 pp | +16.6 pp | -2.0 pp | — | +4.7 pp |
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finnstockinger has 56 trade ideas tracked on Buzzberg across 56 tickers since January 2026. Win rate 62% across 56 evaluated calls, average return +14.6%. Ranked #763 on Buzzberg's 30-day Authors leaderboard. Most covered: IREN, AAOI, NBIS.
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
