大市破頂收市，但日圓干預先至係主菜

今日收市表現，表面上係教科書式嘅 risk-on 反彈，乍睇之下印證咗開市前嘅睇法。SPY 收 719.70 [1]，升 1.14% [1]，QQQ 收 668.50 [2]（升 1.05% [2]）——兩隻都係破頂或者貼近紀錄高位，為 Bloomberg 口中自 2020 年以來最強嘅一個月畫上句號 [3]。但係本人話你聽，今日唔係股票故事，係外匯故事，而且呢個故事滲透咗每一個資產類別。呢個分析框架要我哋從呢個角度去睇。

最大嘅訊號係邊度？東京干預匯市。日圓單日勁升超過 2% [4]，係三年嚟最大單日升幅，原因係日本由「最後警告」嘅口術，去到真正落場干預匯市 [4]。你估呢樣嘢只係亞洲嘅事？唔係咁㗎。日圓轉強會逼倉，所謂 carry trade（套息交易）一直默默地為美國國債同科技股嘅槓桿好倉提供子彈。今日股市照樣升——Alphabet 仲創出歷來第二大單日市值升幅 [5]——呢樣嘢話畀我哋知，AI 故仔嘅買盤暫時頂得住一場本應發生嘅去槓桿衝擊。但呢個唔係穩定，係集中風險扮闊度，明唔明？

債市嘅讀數，比股市誠實得多。10 年期收 4.39% [6]，30 年期收 4.987% [6]——「risk-on」嘅大市之下，長債仲係貼住 5% 唔肯落。2s10s 息差擴闊到 +0.52% [6]，3m10s 去到 +0.805% [6]。TLT 得 +0.18% [6] 啫。我譯畀你聽：長存續期嘅買家根本唔肯追股市嘅升浪，而 Fitch 警告美國債務「遠高於」其他 AA 級主權國家 [7]，呢樣嘢已經由尾部風險，變成每日嘅定價輸入。再加上 ECB 同 BOE 公開因為能源問題轉鷹 [8][9]，油價一度逼近 $130 [8]，全球嘅期限溢價（term premium）結構性硬撐。

VIX 嘅格局確認咗，但係冇放鬆過。即月 VIX 16.89 [10]，前月期貨 19.40 [10]，contango 14.86% [10]。SPY 升 1.14% [1] 嘅一日仲有咁嘅 contango，呢個就係馬腳——dealer 根本唔信「all-clear」。Put/call 比率 1.172 [10]，明日到期嘅 ATM IV 去到 8.95% [10]，期權盤面擺明係 position 緊一個 gap，唔係慢慢磨。

商品市場嘅分歧，正正係此分析框架對成本推動型通脹嘅預測。金價收 424.16 [11]（升 1.62% [11]）——破頂股市嘅一日避險買盤都仲在，呢個就係儲備輪換嘅結構性故事實時上演。原油期貨收 105.41 [12]（升 $0.34 [12]），USO 跌 2.18% [12] 係獲利回吐，但 UNG 爆升 +4.53% [13]，天然氣守住 2.758 [13]。能源呢樣嘢，正正係 ECB 同 BOE 加息嘅理由 [8][9]；PPI 按年 6.03% [14] vs CPI 3.32% [14]，意思係生產商仲喺度食緊 margin，呢樣嘢任你 Fed 點減息都救唔到。

部署聽日：

SPY 719.70 [1]： 星期五就係 5 月 1 日 ATM 到期日嘅釘價戰，8.95% IV [10] 隱含大約 $2.10 嘅預期波幅。要留意：715 係 gamma 地板，725 係突破觸發位。
10Y 4.39% [6] / 30Y 4.987% [6]： 如果 30 年期收市衝破 5.00% 而股市企平，呢個就係格局轉變嘅訊號。下個禮拜五嘅 NFP [15] 就係催化窗口開啟嘅時候。
DXY 118.73 [16] / 日圓： 干預之後嘅後續走勢點？如果干預失敗（日圓再插水），carry unwind 嘅風險就會死灰復燃。

隔夜要留意： JGB 10 年期對今日 MOF 干預嘅反應。如果 JGB 孳息因為市場解讀為 BOJ 收緊而抽升，預期歐洲開市時德國 Bund 會跟住升，美國 10Y 喺現貨開市前測試 4.45%。

參考資料 [1] SPY closing data, 2026-04-30 [2] QQQ closing data, 2026-04-30 [3] Stocks Hit Record at End of Best Month Since 2020 — https://www.bloomberg.com/news/articles/2026-04-29/stock-market-today-dow-s-p-live-updates [4] Yen Soars as Japan Intervenes After Issuing 'Final' Warning — https://www.bloomberg.com/news/articles/2026-04-30/japan-s-katayama-warns-nearing-timing-to-take-bold-fx-steps [5] Alphabet Has the Second Biggest One-Day Jump in Market Cap Ever — https://www.bloomberg.com/news/articles/2026-04-30/alphabet-has-the-second-biggest-one-day-jump-in-market-cap-ever [6] US Treasury yields and TLT closing data, 2026-04-30 [7] Fitch Warns US Debt Burden Is 'Far Above' Other AA Rated Nations — https://www.bloomberg.com/news/articles/2026-04-30/us-sovereign-rating-faces-deficit-and-debt-challenges-says-fitch [8] ECB and BOE Edge Toward Rate Hikes as Energy Turmoil Deepens — https://www.bloomberg.com/news/articles/2026-04-30/ecb-and-boe-edge-toward-rate-hikes-as-energy-turmoil-deepens [9] ECB Officials See June Hike If Energy Costs Don't Ease First — https://www.bloomberg.com/news/articles/2026-04-30/ecb-officials-see-june-hike-if-energy-prices-don-t-ease-first [10] VIX, contango, put/call and ATM IV data, 2026-04-30 [11] GLD closing data, 2026-04-30 [12] Crude futures and USO closing data, 2026-04-30 [13] UNG and natgas futures closing data, 2026-04-30 [14] CPI/PPI YoY release, 2026-03-01 print [15] Upcoming releases calendar — Employment Situation, 2026-05-08 [16] DXY broad index, 2026-04-24