A relief bounce that faded into the close
The TAIEX snapped a four-day losing streak on Wednesday, October 14, closing up 284.52 points, or 0.59%, at 48,625.83 on turnover of NT$928.62 billion (US$28.89 billion). The session had more ambition than the closing print suggests: the index opened 41.33 points higher at 48,382.64, ran up more than 700 points to an intraday peak of 49,059.12 — briefly reclaiming the 49,000 mark — and then gave back most of the surge to late-session selling.
The character of the day was bargain hunting and technical stabilization after Tuesday’s 960.65-point (-1.95%) plunge, which had been driven by Middle East geopolitical risk and an overnight rout in global technology shares. Notably, the rebound was led by old-economy names rather than the usual tech generals: the Formosa Plastics group dominated the leaderboard, with Formosa Plastics and Formosa Chemicals & Fibre both finishing limit-up as money rotated into defensive and cyclical traditional sectors. Sector indices tell the same story in miniature — Shipping gained 0.74% and Financials & Insurance 0.14%, while the Semiconductor index finished essentially flat at +0.01%.
TSMC: dead flat on the eve of earnings
TSMC (2330) supported the morning advance but was sold into the afternoon, closing exactly unchanged at NT$2,490. The flat close is itself the story: the company’s October 5–14 quiet period ends today, and its Q3 institutional earnings conference lands Thursday, October 15. Positioning ahead of that event, not conviction, set the tone in the heavyweight.
Elsewhere in large-cap tech, Hon Hai (2317) attracted recovery buying alongside other AI server hardware names, rising 1.25% to NT$243.00, while MediaTek (2454) traded choppy and closed down 1.10% at NT$4,475.00. UMC (2303) added 0.35% to NT$142.00.
| Stock | Close (NT$) | Change | PER* |
|---|---|---|---|
| TSMC (2330) | 2,490.00 | 0.00% | 28.86 |
| Hon Hai (2317) | 243.00 | +1.25% | 15.82 |
| MediaTek (2454) | 4,475.00 | -1.10% | 74.73 |
| UMC (2303) | 142.00 | +0.35% | 21.28 |
*PER as of the October 13 TWSE valuation file.
One cross-check on the heavyweight: TSMC’s ADR closed at $445.12 in Tuesday’s US session, roughly 14.9% above Wednesday’s Taipei close on a share-adjusted basis. That gap is structural — the ADRs have habitually traded at a 15–25% premium in recent years given limited fungibility — and the two closes come from different sessions, so the level signals nothing by itself. If anything, a reading near the bottom of the recent band is worth a glance after the earnings call; it is the day-to-day change in the gap that carries information, not the premium itself.
Flows: foreigners sell a sixth straight session, trusts keep buying
The exchange’s institutional tallies for Wednesday:
- Foreign investors: net SELL NT$20.04 billion — their sixth consecutive session of net selling on the main board.
- Investment trusts: net BUY NT$16.11 billion — domestic trusts continued to lean against the outflow.
- Dealers (proprietary + hedge): net SELL NT$11.47 billion.
- Three institutions combined: net SELL NT$15.40 billion.
So Wednesday’s bounce happened despite, not because of, institutional money — the index rose into a NT$15.4 billion combined institutional outflow, with trusts the only pillar on the bid.
The currency corroborates the pressure. USD/TWD stood at 32.14, up 0.67%, after the Taiwan dollar weakened past the 32.00 mark on Tuesday; local dealing on Wednesday ranged between NT$32.194 and NT$32.224 per dollar. Persistent foreign equity outflows and a weakening Taiwan dollar remain two faces of the same trade.
Positioning and leverage: the prior session’s footprint
Derivatives and leverage data lag by a day, so the following describes positioning as of Tuesday, October 13 — the setup coming into Wednesday, not the result of it. Foreign investors held a net short of 87,239 contracts in TAIEX futures open interest (net volume -4,367 on the day), and the volume-based options put/call ratio stood at 88.76%. In the cash market’s leverage channels — which are three distinct things in Taiwan — retail margin-purchase balances (leveraged longs) fell NT$8.35 billion to NT$645.0 billion, a modest deleveraging on the plunge day. In the institutional short channel, SBL balances rose in 467 shortable issues and fell in 486 — close to balanced breadth. Among single names, Hon Hai’s SBL balance jumped 8.33 million shares on Tuesday, the most notable institutional short build among the majors, while UMC’s fell 3.30 million shares. TSMC’s SBL balance was essentially static (+36,000 shares).
Taken together, the scoreboard reads as cautious rather than capitulatory: a sizable foreign futures net short and a sixth session of cash selling, but retail leverage shrinking rather than being forced out, and no one-way rush in institutional shorts.
Global backdrop
The overnight hand-off was unhelpful but not hostile: the Philadelphia Semiconductor Index slipped 0.23% and the S&P 500 closed near flat at -0.02% in Tuesday’s US session, with S&P futures ticking up 0.16% overnight into Wednesday’s Asian trade. Crude oil volatility and scrutiny of AI capital-expenditure returns, as the US quarterly earnings season gets underway, kept the ceiling low on sentiment.
What to watch
- TSMC’s Q3 earnings conference on Thursday, October 15. The flat NT$2,490 close says the market is squarely on the fence; guidance on AI-driven capex and demand will set the tone for the Semiconductor sub-index, which contributed nothing to Wednesday’s bounce.
- Whether the foreign selling streak extends to seven sessions — and with it, USD/TWD’s behavior above 32. Trusts have absorbed much of the flow; their capacity to keep doing so matters.
- Wednesday’s TAIFEX positioning data, once published: whether foreign investors’ futures net short deepened from -87,239 contracts into the rebound, or was trimmed.
Disclaimer: This is an information and analysis publication, not investment advice. See our Methodology for data sources, standards, and our corrections policy.