000660.KS
holds · 8.5% allocation
Conviction over time
Sentiment weighted by conviction, oldest to newest — above the line is bullish
Price targets
How each level moved over time. The last value is his current one.
Trades
What he actually did, newest first
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16 Jul 26
sold ASML shares a couple of months ago
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16 Jul 26
bought SK Hynix with proceeds from selling ASML
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07 Jul 26
WOLF reached his buying target so he added a bit more
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01 Jul 26
no trades executed this month; allocation shifts are purely from price action
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27 Jun 26
not adding after a +220% run
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27 Jun 26
not adding after a +220% run
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17 Jun 26
bought SK Hynix during the Iran war drop
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17 Jun 26
bought during the tariff drop
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17 Jun 26
bought during the tariff drop
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12 Jun 26
sold ASML shares to rotate into SK Hynix
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12 Jun 26
rotated ASML sale proceeds into SK Hynix
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31 May 26
Bought some Wolfspeed in the beginning of the month.
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31 May 26
Bought some Fluence in the beginning of the month.
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31 May 26
Sold his TMDX shares.
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31 May 26
Sold ASML shares (+13% in 3 months) to fund a SK Hynix purchase.
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31 May 26
Bought SK Hynix using proceeds from selling ASML; wishes he had bought more three months ago (+114% since).
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26 May 26
09/03 call
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26 May 26
10/03 call
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26 May 26
11/03 call
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26 May 26
11/03 call
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26 May 26
31/03 call
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26 May 26
31/03 call
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26 May 26
31/03 call
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26 May 26
20/04 call
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26 May 26
27/04, closed the position
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26 May 26
05/05 call
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26 May 26
07/05 call
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08 May 26
Buy at 487 on 09/03
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08 May 26
Buy at 20 on 10/03
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08 May 26
Buy at 88.66 on 11/03
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08 May 26
Buy at 6.52 on 11/03
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08 May 26
Buy at 4.9 on 31/03
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08 May 26
Buy at 16.7 on 31/03
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08 May 26
Buy at 18.7 on 31/03
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08 May 26
Buy at 230 on 20/04
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08 May 26
Sold at 8 on 27/04
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08 May 26
Buy at 36 on 05/05
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08 May 26
Buy at 16.67 on 07/05
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01 May 26
sold this month to raise cash
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01 May 26
sold this month to raise cash
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01 May 26
sold this month to raise cash
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01 May 26
only buy made this month
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01 May 26
wants to add more to bring FTC up from 4.5% allocation, waiting for a better moment to buy
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24 Apr 26
Says he also bought SK Hynix.
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05 Apr 26
initiated new position
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05 Apr 26
initiated new position
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05 Apr 26
initiated new position, up 15% since entry
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05 Apr 26
initiated new position in SK Hynix
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05 Apr 26
bought extra shares, continuing to DCA
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05 Apr 26
plans to add 1 new position as part of concentrating the portfolio
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05 Apr 26
plans to sell 5 to 6 positions to bring total holdings from 16 down to 11
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18 Mar 26
Bought the dip
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11 Mar 26
No further detail given.
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11 Mar 26
No further detail given.
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11 Mar 26
No further detail given.
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11 Mar 26
No further detail given.
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11 Mar 26
Rare asymmetric bet in physical AI; digital lidar paired with high-margin perception software.
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11 Mar 26
Foundational AI infrastructure play with 62% HBM market share, trading at distressed 5.2x forward P/E.
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11 Mar 26
Wafer-scale optical interposers replace bottlenecked copper cables; $350M liquidity buffer de-risks the setup.
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11 Mar 26
Capitalizing on the compute-to-connectivity shift; dominates optical DSP and secures sticky AI silicon revenue.
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09 Mar 26
Bought today on optimism around Korean memory stocks reacting to news.
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09 Mar 26
Bought on the Frankfurt stock exchange today, first of four new positions opened that day.
Reasoning trail
Every post mentioning 000660.KS, newest first — the thesis as it was built and revised
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30 Jul 26
Says if he didn't already have space sector exposure he'd buy Planet and Rocket Lab now, and would prioritize the space sector over SK Hynix if forced to choose
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29 Jul 26
Recaps the SK hynix earnings call: revenue miss not a concern given the deliberate shift toward HBM/DRAM for AI, notes pricing power, capacity discipline, long-term supply agreements, and a stronger balance sheet, despite the post-earnings share drop.
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29 Jul 26
Thanks a user for a detailed SK hynix earnings review and says he'll read into it too.
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27 Jul 26
Reports on the $500B+ SK hynix / NVDA partnership: a 2-gigawatt AI cloud in Korea using NVIDIA's Vera Rubin platform and SK hynix HBM4, with a first AI factory planned for 2027, plus co-development of AI memory solutions.
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16 Jul 26
Says he'd pick ASML over TSM, but he sold his ASML shares to buy SK Hynix a couple of months ago and would now pick Hynix over both.
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16 Jul 26
Cites SK Hynix's VP saying their business model is completely changing and only companies willing to adapt will survive and succeed in the AI race.
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15 Jul 26
Argues SK Hynix is structurally different from other Korean stocks because it's a critical HBM bottleneck in the AI supply chain, so US institutional demand justifies a persistent 15-20% ADR premium, similar to TSMC's dynamic.
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15 Jul 26
Notes $SKHY trades at a 51% premium to its Korean counterpart and argues a significant premium will persist long-term, drawing a parallel to $TSM's historical 13-26% ADR premium over its Taiwanese shares.
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15 Jul 26
Clarifies confusion about $SKHY ADR vs Korean OG shares performance, saying both are actually down 6% this week since the ADR follows the primary Korean listing.
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08 Jul 26
Recaps a Raise summit panel on memory/HBM featuring SK Hynix's VP of memory research: HBM is not seen as a final answer, memory has shifted from commodity to co-engineered architecture, only three major memory players remain (Micron, SK Hynix, Samsung), HBM is much harder to manufacture than DRAM, bandwidth (not capacity) is the binding constraint, and a multi-year memory shortage is expected.
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07 Jul 26
After being offline during a move, says he's calm in this market; WOLF hit his buying target so he added a bit more at $34.3, and restates his full watchlist of buy/add targets across many tickers.
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01 Jul 26
Monthly portfolio update: MTD -3.7%, YTD +94.1%, no trades this month, allocation shifts purely from price action across 14 positions including Planet Labs, Ouster, Rocket Lab, Marvell, SK Hynix, ASM International, Palantir, Fluence, Hims, Google, Iren, Wolfspeed, Amprius and Filtronic.
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27 Jun 26
Bought SK Hynix and MRVL three months ago, both up around +220%; happy with both positions and not adding at these levels, though a short sharp pullback wouldn't surprise him.
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27 Jun 26
Publishes his personal add-target levels across his portfolio, based on allocation sizing and how undervalued each stock is, and says he'll try to stay patient.
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25 Jun 26
Author notes SK Hynix is up 14% as a direct result of Micron's blowout earnings.
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24 Jun 26
Replying to a detailed bull thesis on the memory sector, author agrees Micron, Samsung, SK Hynix and SanDisk are correlated but pushes back on calling them "the same".
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23 Jun 26
Author discloses that of the companies shown in a screenshot he was asked about, he personally owns WOLF, OUST, SK Hynix, and GOOGL, noting most of what he owns fits an AI supply chain theme.
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21 Jun 26
Long bull thesis on the memory sector rebutting a bearish article point by point: argues DRAM can't be replaced by flash for AI training, that Nvidia's SOCAMM reduction is CPU-side (not a cut to GPU memory demand, which is expanding via HBM4), that high memory margins reflect genuine manufacturing/yield difficulty rather than pure supply restriction, and that the 'memory wall' makes a capex pause self-defeating for hyperscalers racing for frontier models. States he remains bullish on memory overall.
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17 Jun 26
Not worried about PL's 50% drop; diversifies across 'investment waves' (space, memory, LiDAR, drones, photonics, datacenters, energy) so some rise while others fall. Recounts buying SK Hynix at €487 during the Iran war drop and PL/RKLB during the tariff drop. Says the current PL level is an ideal entry for anyone lacking space exposure, and he would add more himself if PL falls to the low $20's.
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12 Jun 26
Argues SK Hynix still has room to grow given a forward P/E of 5.81 versus stronger ROIC/ROE/margins than ASML; sold his ASML shares to rotate into SK Hynix.
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11 Jun 26
Says buying SK Hynix three months ago was a no-brainer; he was completely sold out for the whole year given growing margins and exposure to every high-growth vertical, calling it one of the safest investments available.
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06 Jun 26
Motivational post acknowledging his YTD dropped 26% from highs, urging followers to use AI for research, follow credible creators, and not feel 'too late' — citing that he once thought he was late on PL, PLTR, MRVL and SK Hynix but wasn't.
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31 May 26
Monthly portfolio update: MTD +40.4%, YTD +97.8%. Bought WOLF and FLNC early in the month, sold TMDX, and sold ASML to fund a SK Hynix purchase (wishes he'd bought more three months ago). Cash allocation ~11.6% and building slightly via savings, not sales. Reviews all 14 core holdings with performance, allocation and outlook: PL (target $60 by year end, earnings 4/6), RKLB (surged on strong earnings), OUST (long-term hold, no longer buy territory), PLTR (favorite AI software play, #1 holding), SK Hynix (regrets not buying more), AMPX (bullish long-term on batteries/drones), IREN (highest-cost holding, datacenter thesis), MRVL (photonics center, healthy balance sheet), ASM.AS (longest-held, safe-haven, €1,000 target where he may trim), Filtronic (SpaceX GaN amp supplier), WOLF (bullish long-term, BoA target >$80), FLNC (Hyperscaler contracts, next quarters crucial), GOOGL (could become most valuable company), HIMS (small 3.7% allocation, may add).
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26 May 26
Recaps a public call track record over ~2.5 months on a hypothetical $1K-per-call basis: buys in SK Hynix, OUST, MRVL, POET (twice), HIMS, Filtronic, WOLF, FLNC, and a sale of POET at 8; reports total invested 10K growing to 18.77K, an 87.70% return.
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19 May 26
Asks whether GOOGL's AI news reversed the broader AI trade, illustrated with a chart of SK Hynix rallying sharply on AI chip demand optimism.
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15 May 26
Argues against the narrative that concentration is required to beat the market, citing his own track record of holding 12-17 stocks (avg 15) while beating the S&P 500 every year since 2023, with a portfolio breakdown showing Planet Labs, Rocket Lab, Palantir, Ouster and others as top holdings.
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14 May 26
Names RKLB, WOLF, SK Hynix and Filtronic as the stocks in his portfolio that were up the most last month.
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10 May 26
Full monthly portfolio update: 15% cash plus 14 named positions with allocation percentages and average cost basis / gain per position, from $PL as largest (16%) down to $HIMS smallest (4.7%, currently at a loss).
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09 May 26
Explains he accesses SK Hynix via an OTC/Frankfurt listing, sharing a chart of the Frankfurt-listed shares up sharply YTD.
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08 May 26
Recaps a hypothetical $1K-per-decision portfolio of his last 2 months of calls, showing a 53.85% total return across SK Hynix, OUST, MRVL, POET (bought twice, sold), HIMS, Filtronic, WOLF, and FLNC.
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06 May 26
Author reports SK Hynix hit €1,000 in Frankfurt trading, putting him up 105% in two months, and reiterates the stock was clearly undervalued.
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04 May 26
Celebrates SK Hynix rising 11% today, pushing his investment up almost 80% over two months.
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01 May 26
Discloses his entry/cost-basis prices for two recent positions: Filtronic at 230p (£2.30) and SK Hynix at €487, the latter bought via the Frankfurt OTC listing.
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01 May 26
Publishes management-quality scores for his full current holding list under his rating framework: GOOGL 97, FTC 96, SK Hynix 93, ASM.AS 92, OUST 90, PL 89, MRVL 88, PLTR 87, TMDX 87, HIMS 85, RKLB 79, AMPX 75, FLNC 73, IREN 35 — generally praising execution and capital discipline, with dilution and guidance misses as the main detractors, and IREN scored lowest for promotional narrative pivots and heavy dilution.
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01 May 26
Monthly portfolio update: best month ever at +48.49% return. Raised cash by selling POET, HOOD and CROWD; only buy was FTC (Filtronic). Wants to add to FTC (currently 4.5% allocation) but is waiting for a better entry. 45% of holdings report earnings next week, especially TMDX and FLNC, his worst performers now under 3% allocation each — earnings will decide whether he trims or adds. Plans to move toward a more concentrated ~12-stock portfolio and expects more trading this month.
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27 Apr 26
Highlights SK Hynix opening up 4.42% in Korea, taking it as a good sign that Korean investors aren't worried about the Strait of Hormuz situation.
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24 Apr 26
Replying with a chart, says he also bought SK Hynix.
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24 Apr 26
Reiterates it's not too late to buy SK Hynix, pointing to a strong Q1 earnings beat.
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24 Apr 26
Asked which memory stock is the best buy among MU, SNDK, SK Hynix and Kioxia, picks SK Hynix.
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23 Apr 26
Highlights SK Hynix's blowout Q1 earnings (EPS +397% YoY, revenue +197% YoY), a very low PEG of 0.1, tight memory supply, and AI-driven demand; says he's up 50% and believes the rally has further to run.
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21 Apr 26
Notes his SK Hynix position is now up 50% and points to his investment thesis for the name.
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20 Apr 26
Notes the market shrugged off weekend Iran developments; US futures down slightly, Korea opened flat with SK Hynix gaining 2%.
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18 Apr 26
In reply to being asked if he's buying certain stocks, discloses he already owns SK Hynix.
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14 Apr 26
Notes SK Hynix is back at all-time highs after being hurt by the war's disruption to LNG and helium supply, taking it as confirmation of optimism about the Strait of Hormuz reopening; he's up 31% since investing on 09/04.
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09 Apr 26
Bullish on Samsung and SK Hynix, seeing 2027 profit projections as making a major stock re-rating for both feel inevitable.
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08 Apr 26
Notes it could be one of the best market days of the year as SK Hynix jumps 13% following the Iran-US ceasefire announcement.
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06 Apr 26
Notes SK Hynix rose slightly, tied to Strait-dependent helium/gas supply, with futures broadly recovering while markets await more information.
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06 Apr 26
Bullish on SK Hynix's DRAM yield improvement to 80% and its tripled investment to supply HBM4E memory for NVDA's upcoming Vera Rubin Ultra AI chips.
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05 Apr 26
Thesis that companies solving AI infrastructure bottlenecks (memory/HBM, packaging, servers, networking, photonics, power/thermal) have pricing power to pass on war-driven energy inflation, making them attractive during market corrections; lists names across each category.
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05 Apr 26
Monthly portfolio update: up 6.9% in March, led by PL, PLTR, RKLB and AMPX; initiated four new positions (OUST, POET, MRVL, SK Hynix), added to HIMS; TMDX, HOOD, FLNC and IREN declined; plans to cut cash from 20% to 10% and consolidate from 16 to 11 holdings.
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04 Apr 26
Detailed thesis on how the Strait closure and resulting helium shortage affects HBM producers (Micron, SK Hynix, Samsung): near-term margins protected by long-term supply contracts with energy clauses and 4-6 months of helium stockpiles lasting until at least June 2026, with an expectation of durable gross-margin expansion afterward, similar to the pattern seen after the Ukraine energy crisis.
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02 Apr 26
Bearish on the market open, citing SK Hynix's sharp decline and Trump's speech as backfiring, deepening war-driven supply-chain stress; expects only a full recovery once the war ends.
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01 Apr 26
Suggests additional names to add to a supply-chain map: SK Hynix for memory, Vertiv for thermal management, Amkor for packaging, and Aehr Test Systems for testing.
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01 Apr 26
Bullish, high-conviction long thesis on SK Hynix: cheap forward P/E for a sold-out company, capacity expansion, a potential US listing, and a war-driven selloff seen as a buying opportunity.
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30 Mar 26
Notes SK Hynix and Samsung fell on the Korean market, largely pricing in Friday's US losses, but frames it as not too bad since both remain up ~4% from the lows at the start of the war.
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26 Mar 26
Notes extreme volatility in SK Hynix shares, calling out that even mega-cap names are now swinging like small caps.
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23 Mar 26
Notes $GOOGL and $MSFT competing for HBM supply, highlighting ongoing AI supply chain bottlenecks that benefit Samsung, $MU, and SK Hynix shareholders.
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23 Mar 26
Detailed bull case for SK hynix's planned U.S. ADR listing: closes the P/E gap with $MU, offers FX efficiency for USD-denominated capex like ASML EUV equipment, funds HBM market-share defense against Nvidia with zero net dilution, and signals a shift toward Western-style governance that attacks the 'Korea Discount'.
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18 Mar 26
Explains that $MU's competitive threat is concrete and near: Samsung is planning a 50% HBM capacity surge this year and SK Hynix is accelerating new factory timelines, though he admits he didn't expect MU to drop after its earnings.
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18 Mar 26
Says he bought SK Hynix at the dip and is surprised how quickly it recovered, up almost 30% already.
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16 Mar 26
Says timing the market is luck, but praises SK Hynix as a great company.
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16 Mar 26
Reports his SK Hynix position gained 23.6% in one week, sharing a chart showing the Frankfurt-listed shares (HY9H.F) up 13.16% to €602.
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16 Mar 26
Defends his relaxed stance on the Hormuz/Iran situation against pushback, citing sufficient US production and European reserves; notes his SK Hynix position dropped 29% on the crisis and has already recovered 25%, taking that as evidence Korean investors are relaxed too.
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16 Mar 26
Comments on a strong Monday morning green day for Korean markets, consistent with his SK Hynix exposure.
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14 Mar 26
Thesis post: major tech layoffs (AMZN, META, ORCL, XYZ, CRM, ASML) are being redirected into AI R&D and capex, not signs of weak fundamentals. He is bullish on companies that control the emerging AI infrastructure bottlenecks — memory/HBM, packaging/OSAT, server/rack integration, networking silicon, photonics/optical, and power/thermal/grid — naming SK Hynix, Samsung, MU, ASE Technology, AMKR, JCET, SMCI, DELL, HPE, Foxconn, AVGO, MRVL, CSCO, ANET, Ayar Labs, ALAB, CRDO, COHR, LITE, VRT, MOD, NVT, SU.PA, IREN, NBIS, CIFR.
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12 Mar 26
Explains he bought SK Hynix as a GDR (HY9H) on the German Stock Exchange via DeGiro, noting most European platforms offer it this way.
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11 Mar 26
Reveals he bought POET, MRVL, OUST, and SK Hynix.
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11 Mar 26
Says Ouster's earnings were great and that SK Hynix would be a great pick for the other investor's daughter's portfolio.
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11 Mar 26
Announces four new buys this week: OUST as an asymmetric physical-AI/LiDAR bet, SK Hynix for HBM memory dominance, POET for optical interposer technology, and MRVL for the compute-to-connectivity/optical DSP shift.
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10 Mar 26
Argues SK Hynix accepting a 20% premium on ASML EUV tools proves it has ironclad forward-booked HBM demand from NVDA and hyperscalers; sees the market pricing SK Hynix at a 5.2x forward P/E as completely disconnected from the strength of structural AI demand.
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10 Mar 26
Asks whether memory companies benefiting from NAND price spikes (mentioned: SNDK, MU, Samsung, SK Hynix) are working on expanding capacity given they're sold out until 2026.
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10 Mar 26
Notes SK Hynix shares jumped 12% after Trump remarked that the war could end soon.
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09 Mar 26
Agrees SK Hynix looks undervalued and says it's a great time to buy the stock.
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09 Mar 26
Says he bought SK Hynix today, echoing excitement about a potential rally in Korean memory stocks.
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09 Mar 26
Discusses another investor's plan to add to MELI and consider a Korea ETF, speculating that Samsung and SK Hynix make up most of such an ETF.
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09 Mar 26
Agrees SK Hynix and Micron prices are high and that the Iran conflict needs monitoring, welcoming Trump's comment that the war could end soon.
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09 Mar 26
Details a new SK Hynix purchase at €487 on the Frankfurt exchange, laying out a full bull case: dominant HBM market share via proprietary MR-MUF packaging, capacity sold out through 2026, record margins, and a distressed 5.2x forward P/E versus 25%+ structural AI demand growth. Flags Iran-driven energy costs, a possible 2026/2027 HBM supply glut from Samsung/Micron, and China export-license risk as the key risks to monitor.
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08 Mar 26
Lists names he's researching more closely in the AI/data center supply chain space: Marvell, SK Hynix, Vertiv, Amkor, Applied Optoelectronics, Lumentum.
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07 Mar 26
Announces a new listenable article about the AI supply chain, teasing why AXTI, AAOI and LITE are critical bottlenecks, why SK Hynix is completely sold out in 2026, and why ASML and LRCX are lagging a bit behind.
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04 Mar 26
Says SK Hynix dropped another 10% on broader market fears and rising energy costs, but maintains the thesis is intact due to its near-monopoly on HBM for Nvidia's AI GPUs, giving it pricing power to pass on higher costs.
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03 Mar 26
Bull case for SK Hynix: earnings growth keeps compressing its Forward P/E (~5.37x) below Samsung (8.38x) and Micron (10.17x), driven by its HBM monopoly with Nvidia via superior MR-MUF chip-bonding tech (vs Samsung's TC-NCF), yielding ~90% manufacturing yields vs 60-70% for rivals; expects the pattern to repeat at end-of-April earnings.
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03 Mar 26
Characterizes the Samsung/SK Hynix intraday drop as ordinary profit-taking driven by geopolitical stress, not a fundamental issue.
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13 Feb 26
Curated AI-boom sector watchlist across cybersecurity, datacenters, energy grid, nuclear, solar, space, semiconductors, software/AI platforms, and humanoid robotics; marks which companies he personally owns.