History of Market · The Chronicle of the U.S. Stock Market historyofmarket.com
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Semiconductors — Historical Charts and Data

Every Semiconductors chart, valuation metric, drawdown record, and constituent breakdown from History of Market. 12 panels, refreshed daily.

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PHLX SOX · 30 銘柄 — SOX の中身を解剖する 30 銘柄をサブ業種別に分類:ファブレス設計、ファウンドリ、メモリ、製造装置、アナログ、RF、IDM。海外銘柄は国コードで明示——半導体は純粋に米国だけの産業ではない。 SMH · VanEck Semiconductor — SMH が実際に保有する銘柄とウェイト SMH は MVIS US 25 指数を追随、25 銘柄構成。Yahoo は上位約 10 銘柄(ETF の約 70%)のウェイトを開示。残り 15 銘柄はサブセクター付きで列挙するが、ウェイト欄は「非開示」。 メモリ · DRAM / NAND / HBM — サイクル王者——SOX に残るのは 1 社のみ メモリは半導体内で最も振幅の大きいサブ業種。SOX の唯一の純メモリ銘柄は MU。Samsung と SK Hynix は KOSPI に上場——SMH を買っても世界メモリ時価総額の約 60% が抜け落ちる。AI HBM ブームはこの 3 社で分け合っている。 SOXX · iShares Semiconductor ETF — SOXX at the wrapper layer SOXX tracks the ICE Semiconductor Sector Index (formerly PHLX SOX): 30 components, 8% single-stock cap, rebalanced quarterly. This panel deliberately stays in the package layer — AUM, expense ratio, top-10 concentration ladder, country and sub-sector breakdowns. The 30-name constituent map already lives on the preceding 'Inside the Index' panel and isn't repeated here. SOXX vs SMH · metadata, overlap, ten-year return — SOXX and SMH — same label, different weighting paths Both are 'semiconductor ETFs' but the curves have diverged. SMH carries 25 names with a 20% single-stock cap (TSM and NVDA sit at the very top of the ladder); SOXX carries 30 names with an 8% cap and is materially more balanced. 22 names sit in both ETFs; SOXX adds 8 smaller / specialty names, SMH adds 3 foreign names (ASE, STM, UMC) that SOXX doesn't carry. Over ten years SMH compounds to ~24×, SOXX to ~20× — the 2023-2024 AI rally fed the concentrated top of SMH's ladder more than SOXX's flatter cap.

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