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Asia Opening Brief

Asia splits on quarter-end: Nikkei rips, China/Korea nurse worst quarterly losses in years

Wednesday, September 30, 2026 · what the overnight Asia session hands the US open · bias: mixed

Asia closed the quarter wide open — Tokyo sprinting while Seoul and the mainland nurse their worst quarterly drawdowns since the pandemic — and a yen repatriation squeeze is setting the tone into today's PCE print.

The Nikkei rose 2.1 per cent this morning, while the Kospi approached a 0.7 per cent monthly gain against a 19 per cent quarterly fall and the CSI 300 faced a 13 per cent quarterly decline, its largest since the pandemic lockdowns. Hang Seng was choppy, last up 0.43% in the final hour as traders digest Beijing's move — the government announced targeted credit and home-buyer support on 29 September, and the surveys turned positive the following morning. USD/JPY did the real damage overnight, sliding from around 157.5 to near 156.4 as Japanese investors and exporters sold foreign currency ahead of the fiscal half-year-end, with intervention chatter after Washington flagged concern about yen weakness keeping upside capped.

US futures are drifting higher into a data-heavy open — GDP's third estimate, core PCE, and ADP land at 8:30am, with Micron earnings and an Altman keynote adding AI-trade volatility after the bell. Bond yields easing into the print has been the main futures support story.

The risk: a hot PCE re-opens the hawkish-Fed trade just as USD/JPY sits on intervention watch — a hotter-than-expected core print plus fresh yen weakness could force a disorderly unwind of the carry-funded risk trade that's underpinned US equities all quarter.

Levels that framed this session

WatchUSD/JPY 155-157 intervention zone; CSI 300/HSI follow-through on Beijing stimulus
Catalyst8:30am ET Q2 GDP (3rd) + August core PCE + ADP; Micron earnings after close
SPY flip~767 (indicative, no live GEX)
QQQ support~615 (indicative)
SPY call wall~775 (indicative)

This note is written from live dealer positioning.

The same gamma data behind it — the flip, the call and put walls, and where price sits between them — is on the terminal for any ticker, updated through the session. Every setup we publish carries its entry, stop and target before the trade, and gets graded in the open afterwards.

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