XAnalytics · Backtest audit File @jukan05 · 31 May 2026

@jukan05 · 1937 verified calls backtested

@jukan05's calls have beaten their sector by 7.4% per month, winning 63% of the time.

+7.4%
Avg. return vs its sector
per call · over the timeframe it called (or 1 month)
+0.5%
1 day
+7.4%
1 month
+21.3%
3 months
the same calls held a fixed 1 day / 1 month / 3 months
63%
Calls that beat the market
based on 825 deduplicated bets
63% beat their sector 37% didn't

Their calls have genuinely beaten the market.

What “return vs sector” means
Each call's stock vs its own sector — beating the sector, not just going up, is the fair test of skill. Averaged across 825 deduplicated bets. Calls that named their own timeframe are judged over that window (as a per-month rate); the rest over 1 month.
Very unlikely to be luck

Across 825 bets, @jukan05's average call beat its sector by 7.4%t = 8.9, very unlikely to be luck.

could be luckt = 2almost certain

t = 8.9 — the strength of the evidence. Above 2, there's under a 5% chance it's luck.

How the t-value works

Each call is one bet, scored by how much it beat its own sector (fairer than the whole market). The t-value is the average beat divided by its uncertainty:

t = x̄ ⁄ ( s ⁄ √M ) x̄ = avg beat · s = how much the bets vary · M = number of bets

Same-week, same-sector calls ride one move, so they prove less than fully independent wins — the 825 bets count as 466 effective ones. That's why the honest t is 8.9, not the raw 11.8. Full breakdown on the analysis page.

Performance over time

Aftervs sectorvs S&P 500Hit rateCalls
1 day +0.5% +0.7% 52% 876
1 month +7.4% +10.6% 63% 825
3 months +21.3% +28.2% 67% 703
6 months +46.5% +62.4% 66% 530

“vs sector” compares each call to the stock's own industry — the fairest test of skill.

What drives the signal

Does conviction matter?

High conviction1384 calls · 64% hit
+7.4%
Low conviction344 calls · 59% hit
+6.7%

Return by post type

Analysis700 calls · 68% hit
+9.4%
Prediction124 calls · 56% hit
+7.4%
News Reaction886 calls · 61% hit
+5.6%
Position Disclosure17 calls · 47% hit
+1.2%

Long vs short

Long1683 calls · 63% hit
+7.4%
Short45 calls · 58% hit
-0.3%

The evidence — best & worst calls

Biggest wins (after 1 month)

Exhibit A · 2025-07-15 ALAB
“ALAB and MRVL have upside potential, especially ALAB, which maintains strong fundamentals amidst weak market sentiment”
Long · high conviction · View on X ↗
Full post
North American Quarterly Earnings Outlook: AI Momentum Remains Strong, But Inventory and Durability Spark Debate Morgan Stanley (J. Moore, 25/07/14) Morgan Stanley believes that AI supply and demand remain strong, but other sectors are affected by inventory replenishment and trade uncertainty. Some company managements are adopting a more conservative stance, and while market sentiment is strengthening, it still shows skepticism. AI Remains Core Growth Driver, NVDA, ALAB, MRVL Expected to Show Strong Performance Morgan Stanley emphasizes that AI investment remains the primary driving factor, optimistic about the performance across the entire chain from processors to networking, storage, and memory. NVDA is the top pick, while ALAB and MRVL have upside potential, especially ALAB, which maintains strong fundamentals amidst weak market sentiment. Hyperscale cloud service providers are expected to continue revising up their Blackwell procurement plans, driving sustained expenditure growth in 2026. Partial Inventory Replenishment Driven by Tariffs, Durability Remains Major Market Debate Point Recent inventory growth is partly in response to tariff uncertainties. After inventory destocking in 1Q, 2Q/3Q entered a replenishment phase. Although demand is not strong, customers need to maintain higher buffer inventories. In contrast, conservative statements from management have led to stock price pressure; Morgan Stanley tends to favor more conservative players as more noteworthy.…
+106.1%vs sector
Exhibit B · 2025-12-15 SNDK
“we expect supply shortages to persist for at least the next several quarters, and potentially through 2027. We also anticipate this will lead to sequential (QoQ…”
Long · low conviction · View on X ↗
Full post
Goldman Sachs NAND Commentary: Supply/Demand Significantly Tightening; Incremental SSD Data Points NAND supply and demand has tightened significantly over the last two quarters, driven by a combination of production discipline from the supply side—including Samsung, SK Hynix, Micron, and YMTC—and robust demand (from legacy markets such as smartphones and the AI inference sector). We have not heard reports of plans to add new NAND wafer capacity; instead, typical technology migration via upgrades appears to be the consensus plan across suppliers. Suppliers generally project 2026 NAND bit supply growth to be in the mid-10% range. Bit demand growth has the potential to reach the high-teens to 20% range, primarily driven by data center applications, with recent surges in demand for AI inference and HDD replacement. Consequently, we expect supply shortages to persist for at least the next several quarters, and potentially through 2027. We also anticipate this will lead to sequential (QoQ) pricing increases over the coming quarters, with companies having higher exposure to channel and retail markets relative to fixed contract pricing (including SanDisk) likely realizing greater upside. Regarding the Enterprise SSD (eSSD) market, hyperscalers and the enterprise sector continue to drive demand. Our partner checks indicate that SanDisk has secured a second hyperscaler contract for eSSD from Google. Volume shipments are scheduled to ramp up in 1H 2026, with the potential to surpass…
+90.0%vs sector
Exhibit C · 2026-01-12 LITE
“Lumentum (LITE Buy) … Both COHR and LITE continue to offer significant upside potential through 2027”
Long · high conviction · View on X ↗
Full post
GF Overseas Electronics & Communication AI Network: Short-term Disturbances Do Not Alter the Long-term Trend Recent Supply Chain Concerns Recently, due to China’s slower approval of export licenses to Taiwan and tighter export controls to Japan, AXT Inc. (AXTI) lowered its 4Q25 revenue guidance. This has heightened market concerns over the supply chain for related suppliers including AXTI (AXTI), Sumitomo Electric (5802 JP), Lumentum (LITE Buy), and Coherent (COHR Hold). However, we believe inventories have already been built up in advance along the supply chain, and recent comments from hyperscalers continue to point to a constructive outlook for overseas optical module manufacturers through 2027. Therefore, we view the short-term supply chain impact as not altering the medium- to long-term trend. Both COHR and LITE continue to offer significant upside potential through 2027. Stock Impact LITE and COHR have corrected recently, primarily due to concerns over optical utilization rates, upstream material export controls, and some profit-taking after LITE’s 35–40x P/E had priced in near-term expectations. Looking toward 2027, we remain bullish on robust growth in 800G and 1.6T demand. We are also positive on Google’s stance toward optical architectures, given its advantage in interconnect chip count relative to Nvidia, as well as the expected optical ramp-up from other hyperscalers. We believe upstream material supply concerns are already partially priced in. Meanwhile, gi…
+65.5%vs sector

Biggest misses (after 1 month)

Exhibit D · 2026-04-27 6857.T
“Advantest clearly proved why its stock deserves to trade at a premium”
Long · low conviction · View on X ↗
Full post
Advantest earnings highlights: - SoC tester market share increased from 56% in CY24 to 66% in CY25, clearly reinforcing its advantage over Teradyne. - The company received its first high-volume ATE order for silicon photonics. One-line take: Advantest clearly proved why its stock deserves to trade at a premium.
-36.2%vs sector
Exhibit E · 2026-04-06 ASML.AS
“ASML is still cheap”
Long · high conviction · View on X ↗
Full post
I've been calling ASML since October last year, predicting that DRAM would face a severe supply shortage, and that as the three major DRAM makers ramp up capacity expansions, ASML's EUV tools would become the subject of an intense scramble. My thesis is gradually playing out. ASML's EUV slots are already fully sold out through 2027, and negotiations for 2028 allocations are now underway. Most recently, Samsung alone ordered 20 EUV systems for a single fab. ASML is still cheap.
-25.9%vs sector
Exhibit F · 2025-07-15 8035.T
“it is time to buy into beneficiary companies such as Tokyo Electron … we maintain our Overweight rating on our covered companies”
Long · high conviction · View on X ↗
Full post
… 9) To secure sufficient 1-c DRAM production volume for important customers like NVIDIA, Samsung is proactively starting with ample capacity to offset potential mass production yield risks that may arise in the future. (10) Accordingly, we believe that regardless of the actual progress of 1-c DRAM, it is time to buy into beneficiary companies such as Tokyo Electron, Eugene Technology, and EO Technics, and we maintain our Overweight rating on our covered companies. (11) Tokyo Electron: Expected to benefit from Samsung Electronics' DRAM investment due to its relatively high exposure to batch-type CVD equipment for titanium nitride (TiN) processes. (12) EO Technics: Expected to supply laser annealing and marking equipment, and potentially femtosecond laser-based cutting equipment, for the P4/P3 lines dedicated to 1-c DRAM. (13) Eugene Technology: Expected to benefit from Samsung Electronics' 1-c DRAM CAPEX execution due to its dominant market share in the LPCVD market, capable of controlling thickness and uniformity. (14) However, we maintain a cautious stance on other equipment stocks such as Kokusai Electric/Wonik IPS/HPSP due to potential market share declines.
-24.5%vs sector

Their strongest setups — best combination at each horizon

  • 1 day short news-reaction posts +2.3% vs +0.5% overall · 7 bets
  • 1 month long predictions +11.3% vs +7.4% overall · 60 bets
  • 3 months long predictions +29.3% vs +21.3% overall · 42 bets

Step behind the counter — every call, every chart, every time horizon. Filter by conviction or direction and chart any single trade.

Open the data room →
THE RECEIPTS
@jukan05 · audited 31 May 2026

calls found1,937
independent bets825
beat the market63%
avg edge / month+7.4%
best callALAB +106.1%
worst call6857.T -36.2%

VERDICT: WORTH FOLLOWING
SCORE 9/10

Watch out for
their long predictions · +11.3% after 1 month

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How we measured this · download the raw data

We pull @jukan05's posts, use AI to extract each call (ticker, direction, conviction), and backtest it against real prices. A call wins only if it beat its own sector over the month after — not just if the stock rose. Headline numbers use deduplicated bets.

Download the full backtest data (JSONL)

Backtested results are computed from historical price data and do not predict future performance. Every signal here is extracted automatically from public posts and may misread intent, sarcasm, or context. This is not investment advice — verify everything independently before acting on it.