Foreign funds sold NT$461.4 billion of Taiwan equities on October 16, extending an eight-day selling streak that has removed nearly NT$2 trillion from the market this year alone, even as the TAIEX closed up 141.39 points at 47,111.26. Domestic buyers chased printed-circuit-board and fiberglass suppliers into limit-up territory, producing a split session that stock desks described as “index green, flow red.”
Where the money moved
Exchange tallies show investment trusts bought NT$110.4 billion and government-linked banks absorbed NT$156.9 billion, while proprietary desks at brokerages sold NT$334.1 billion after intraday gains. The net institutional deficit of NT$685.1 billion underscores how offshore macro trades still set the tone once U.S. tech earnings and dollar moves reprice Asia risk.
Within the PCB complex, Lusheng Technology, Taijun Holdings, Yadian, and Taihong Electronic hit the daily 10 percent ceiling, while Unimicron Technology surged 8.77 percent on NT$4.16 billion of institutional buying. MediaTek added more than 2 percent, helping the electronic components sub-index outperform the broader market even as Taiwan Semiconductor Manufacturing Co. slipped NT$20 to NT$2,420.
Why PCB led the tape
Traders tied the surge to continuing AI server buildouts and active Taiwan equity ETFs that must deploy cash into liquid large caps after prior-week redemptions slowed. Fiberglass cloth maker Fuqiao also rose limit-up, signaling that the rally stretched beyond bare boards into upstream laminate supply.
Short-covering amplified moves after several PCB names fell double digits earlier in the week when foreign funds dumped anything tied to U.S. hyperscaler capex scares. Desk analysts cautioned that limit-up locks can freeze price discovery, leaving ETFs to buy secondary lines at wide spreads.
TSMC as a drag
TSMC accounted for the bulk of Friday’s foreign sales, with media reports citing NT$535.6 billion of offshore selling in the chipmaker. The stock’s modest decline prevented the index from holding an intraday gain that had exceeded 500 points, reinforcing how a single 23 percent index weight can neutralize broad-based domestic enthusiasm.
Options strategists noted implied volatility on TSMC weekly contracts eased slightly, suggesting some hedges rolled off after the company’s recent earnings call failed to trigger a second leg lower in Taipei.
What Monday may bring
Flow desks said they will watch whether foreign futures shorts continue to cover while cash equity programs keep distributing Taiwan tech. Domestic mutual funds with October dividend reinvestment windows may add another layer of buying into mid-cap industrials if PCB momentum persists.
For retail investors, the session offered a textbook example of Taiwan’s two-speed market: domestic funds hunting AI supply-chain beta while offshore managers reduce exposure to the same names on global growth worries. Until those forces align, 47,000 on the TAIEX may hold without signaling that foreign selling has finished.