Taipei looks past the SOX slide
The TAIEX closed Wednesday, July 15 at 45,631.59, up 0.55%, a session that read — on our numbers — as a quiet act of defiance: the Philadelphia Semiconductor Index had fallen 4.78% at its last US close (July 13, to 12,347.78), and the S&P 500 had lost 0.79%. Taipei’s chip complex not only held, it rallied — the TWSE Semiconductor sub-index gained 1.79%, Shipping rose 2.47%, and Financials & Insurance added a modest 0.38%. Overnight S&P 500 futures ticking up 0.18% to 7,605 gave the session a slightly friendlier backdrop than the cash close implied.
Data note: our exchange quote feed puts Wednesday’s TAIEX close at 45,631.59 (+0.55%), and that is the figure used throughout this piece. A wire summary circulating after the close cited 45,752.88 (+2.27%) for the same session. We could not reconcile the two prints before publication and have flagged the discrepancy under our corrections policy; if the higher print is confirmed, the session was considerably stronger than described here, though the official flow, sector and positioning data below are unaffected either way.
Two calendar items framed the tape. Today was TAIFEX final settlement for TX futures and options (third Wednesday), which tends to inject technical flows into the morning. And Thursday at 14:00 Taipei time, TSMC hosts its Q2 2026 earnings conference — the event the whole market is positioned around.
Institutional flows: domestic money did the lifting
| Investor type (July 15, TWSE) | Net trading value |
|---|---|
| Foreign investors | NT$-1.42B (net sell) |
| Investment trusts | NT$+11.48B (net buy) |
| Dealers (prop + hedge) | NT$+10.13B (net buy) |
| Three institutions combined | NT$+20.19B |
The pattern is unambiguous: foreigners sold, but only just — NT$1.42B is close to flat by this market’s standards — while investment trusts and dealers together added over NT$21B. On a settlement day ahead of a major earnings event, that reads as domestic institutions willing to carry inventory into the TSMC print while foreign desks stayed on the sidelines.
Movers: UMC steals the session
- UMC (2303): NT$166.00, +9.93% — far and away the day’s story among large caps. Worth noting the setup: into Tuesday’s close, UMC’s retail margin-long balance had already been cut by 15,037 lots to 221,982, so the surge came against a backdrop of retail deleveraging rather than fresh leverage. At Tuesday’s close UMC traded at 37.94x earnings and 4.67x book with a 1.73% yield — a rich multiple for a mature-node foundry, and one Wednesday’s move only stretches further.
- MediaTek (2454): NT$3,740.00, +2.19%.
- Hon Hai (2317): NT$239.00, +1.49%.
- TSMC (2330): NT$2,440.00, +0.83% — a restrained pre-earnings drift rather than a chase.
On the currency side, the Taiwan dollar softened marginally, with USD/TWD closing at 32.19 (+0.09%) — no drama, but the FX market is not confirming the equity market’s enthusiasm.
Positioning: the previous session’s picture, kept in its lane
A housekeeping note our readers know well: TAIFEX positioning, margin and SBL data below are Tuesday, July 14 figures — the latest published — and describe the setup coming into today, not today’s action.
- Futures: foreign investors carried a net short of 83,390 TX contracts in open interest into settlement (Tuesday’s net volume -2,219). With today’s expiry, Thursday’s data will show how much of that short rolls into the new contract — a genuinely fresh read on foreign conviction.
- Options: the OI-based put/call ratio stood at 99.31% (volume-based 91.77%) — balanced, neither fear nor complacency.
- Retail leverage (margin purchases, rong-zi): the market-wide margin loan balance fell NT$14.27B to NT$604.0B on Tuesday. Retail longs were trimming, not adding.
- Institutional shorts (SBL, jie-quan): balances rose in 683 shortable issues versus falls in 231 — broad-based short building through the institutional lending channel. The single-name standout was Hon Hai, where the SBL balance jumped 8,704,000 shares in one day to 66.36M — a sizeable institutional bet against (or hedge on) a stock that nonetheless rose 1.49% today. TSMC’s SBL balance barely moved (+135,000 shares to 11.5M).
Taken together, the scoreboard describes a market where retail leverage is coming down, institutional shorts are creeping up in breadth, and futures shorts were substantial into expiry — a cautious positioning backdrop that today’s cash-market buying pushed against.
The ADR gap, for what it’s worth
TSMC’s ADR closed at $421.58 in the July 13 US session, roughly 11.2% above where the Taipei line settled today (closes from different sessions, so treat with care). The ADR premium is structural — it has run roughly 15–25% in recent years given limited fungibility — so the level itself signals nothing. What is mildly interesting is that the gap currently sits below that habitual range; how it re-sets once both markets have traded on the same post-earnings information will be worth a look on Friday.
What to watch
- TSMC Q2 earnings conference, Thursday July 16, 14:00 Taipei — the guidance on advanced-node demand and pricing is the single biggest input for this tape.
- Post-settlement TAIFEX data — how much of the 83,390-contract foreign net short in TX futures is re-established in the new contract month.
- Foreign cash flows and the Hon Hai SBL line — whether Wednesday’s near-flat foreign selling was an earnings-eve pause or a turn, and whether the 8.7M-share one-day jump in Hon Hai’s institutional short balance extends.
Disclaimer: This is an information and analysis publication, not investment advice. See our Methodology for data sources, standards, and our corrections policy.