Iggy’s Journal: US Chip Shares Recover Before SGX Opens
Tue 20 Oct 2026 | Morning
The Numbers
The STI closed Monday 19 Oct at 5,412.00, down 3.53 points or 0.07%. Wall Street traded after SGX had closed. The S&P 500 closed at 7,690.73 (up 0.41%), the Nasdaq at 26,430.89 (up about 1.1%) and the Dow at 51,966.03 (down 0.07%). The Associated Press said AI and chip shares recovered some of last week’s losses while most US shares outside AI and tech fell, and that bond yields rose worldwide after sprotests in Europe. December Brent settled at US$109.55 a barrel, down 0.28% (Dow Jones Market Data via Morningstar).
Two SGX filings were published on Monday. Q & M Dental’s CEO, Dr Ng Chin Siau, saw his deemed interest rise from 54.55% to 55.66% after S$5.80 million of purchases between 9 and 15 October. GuocoLand’s chairman, Quek Leng Chan, saw his deemed interest rise from 71.87% to 71.94% after S$1.64 million of purchases between 7 and 12 October.
Mothership reported Senior Minister K Shanmugam saying SGX is questioning seven listed agriculture and plantation companies over possible links to Indonesian concession fires.
My Personal Take
These two filings landed the day after the episode on insider buying, which made them easy to test. Q & M Dental’s purchase cost about 3.5 times GuocoLand’s and moved the stake by 1.11 points against 0.07, roughly 16 times as much. Divide the dollars by the points and one point of stake cost about S$5 million at Q & M Dental and about S$23 million at GuocoLand, both approximate because the percentages are rounded.
That is now my routine for any insider filing. First I write down two numbers: how many points the stake moved, and what each point cost. Only then do I open the company’s own announcement to see what it says. A chairman who already holds 71.87% and moves 0.07 points is a different fact from a founder going from 54.55% to 55.66%, and the dollar amounts hide that.
Cheers, Iggy 🦖









