@ye4yn ye4yn
Transparent Japanese retail AI-infrastructure thematic trader who maps value-chain bottlenecks
Real-time, fully tickered portfolio narration built around a
Grade = how their written analysis reads (A best). Trader score = how their last-20 timestamped calls performed vs SPY. · Analyst brief as of 2026-06-22.
Across their last 20 scored bets: 45% hit rate, +0.63% mean alpha, trader score +0.53. Their last-14d mentions, direction-adjusted, have moved -5.8% since posting (mean over 85 mentions with price data).
ye4yn is concentrating around trend-following AI infrastructure, memory/storage, advanced packaging, and a short-term SPCX Nasdaq 100 inclusion trade. The distinctive read is that the AI rally is earnings-led and should be owned through current winners, while weaker sleeves such as SaaS, metals, and parts of photonics are being cut. Late week shows a clear risk-control rotation: exits from SNOW, PL, LUNR and metals, heavier SPCX, some NBIS/ONTO/FORM interest, and more cash/CLIP ballast.
The author flipped out of SaaS, PL/LUNR, and metals while adding SPCX, ONTO, WDC, SMTC, NBIS, and CLIP. Conviction intensified around the SPCX Nasdaq 100 inclusion catalyst, but the same window shows risk control via cash raising, bond ballast, CIEN trimming, and weaker-sleeve exits. Concentration risk is highest in SPCX, where repeated adds and catalyst framing dominate the space sleeve despite a noted drawdown.
| date (PT) | ticker | author | sent | what they said | since then | receipt |
|---|---|---|---|---|---|---|
| 2026-07-03 | IGLD | @ye4yn | +0.20 | Discloses new IGLD allocation and compares dividend ETFs and yen cash plans. | · | tweet ↗ |
| 2026-07-03 | SCHD | @ye4yn | +0.20 | Discloses new IGLD allocation and compares dividend ETFs and yen cash plans. | — | tweet ↗ |
| 2026-07-03 | VYM | @ye4yn | -0.15 | Discloses new IGLD allocation and compares dividend ETFs and yen cash plans. | — | tweet ↗ |
| 2026-07-03 | DRAM | @ye4yn | +0.20 | Recaps forced selling, a 330k yen loss, and keeping DRAM exposure. | · | tweet ↗ |
| 2026-07-02 | · | @ye4yn | · | Discusses AI infrastructure demand fears, forced selling, and growth scenario risk. | · | tweet ↗ |
| 2026-07-02 | · | @ye4yn | · | Placed sell orders for yesterday's margin buys and KOSPI bull ETF — Author placed sell orders but instruments are not tickers. | · | tweet ↗ |
| 2026-07-02 | · | @ye4yn | · | Bearish/cautious on AI infrastructure after possible CPU demand reduction. | · | tweet ↗ |
| 2026-07-02 | AMAT | @ye4yn | -0.15 | AMAT leaders touched or broke the 20-day line and author says it feels hard to buy. | — | tweet ↗ |
| 2026-07-02 | META | @ye4yn | -0.05 | Concerned NBIS is not rebounding and META story may still weigh. | — | tweet ↗ |
| 2026-07-02 | NBIS | @ye4yn | -0.25 | Concerned NBIS is not rebounding and META story may still weigh. | — | tweet ↗ |
| 2026-07-01 | · | @ye4yn | · | Says entered Advantest and Nikkei semiconductor ETF despite floating loss start. | · | tweet ↗ |
| 2026-07-01 | DRAM | @ye4yn | +0.55 | Added DRAM and bought a small AI drug-discovery position — Recaps severe drawdowns in photonics, says added DRAM and bought a small AI drug-discovery name. | · | tweet ↗ |
| 2026-07-01 | AAOI | @ye4yn | -0.50 | Added DRAM and bought a small AI drug-discovery position — Recaps severe drawdowns in photonics, says added DRAM and bought a small AI drug-discovery name. | -13.0% | tweet ↗ |
| 2026-07-01 | AXTI | @ye4yn | -0.60 | Added DRAM and bought a small AI drug-discovery position — Recaps severe drawdowns in photonics, says added DRAM and bought a small AI drug-discovery name. | -12.9% | tweet ↗ |
| 2026-07-01 | IGLD | @ye4yn | +0.55 | Put 4.3 million yen into IGLD — Says author invested 4.3M yen in IGLD instead of short-term bonds. | · | tweet ↗ |
Grade is our human read-worthiness rating; trader score is a rolling 20-bet hit-rate/alpha composite — different things, often disagreeing. “Since then” is direction-unaware in the table; the summary line above adjusts for which way they leaned.